Welding seam creep damage level determination method and device, electronic equipment and storage medium

Abstract

The invention discloses a weld creep damage level determination method and device, electronic equipment and a storage medium, and the method comprises the steps: determining a creep damage detection position corresponding to a target detected workpiece, the material of the target detected workpiece being T / P92 steel; performing nonlinear ultrasonic detection on the target detected workpiece based on the creep damage detection position, and determining an ultrasonic detection coefficient corresponding to the target detected workpiece; and determining a damage level corresponding to the target detected workpiece according to the ultrasonic detection coefficient and a damage level reference curve. Based on the technical scheme, the creep damage level of the T / P92 steel welding seam is conveniently and quickly judged, and the efficiency and effectiveness of creep damage detection of the T / P92 steel welding seam are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal material detection, and in particular to a method, device, electronic equipment and storage medium for determining a weld creep damage level. Background Art

[0002] T / P92 steel is a new type of heat-resistant ferrite steel, which has been widely used in existing 600℃ ultra-supercritical units. However, when T / P92 heat-resistant steel materials used in power station coal-fired boilers are operated in very harsh environmental media for a long time, the microstructure and mechanical properties of the fine grain area of ​​the weld will gradually deteriorate, resulting in creep damage, which will develop into cracks during operation, thus causing damage and failure of metal parts. Among them, type IV cracks generated in the weld of T / P92 steel due to creep damage have become a frequent failure site in recent years, bringing great risks to the safe operation of equipment.

[0003] The traditional method of weld crack detection is to use conventional ultrasonic technology for weld crack detection. However, the traditional ultrasonic detection method can only detect macroscopic defects in the material, such as cracks, inclusions, pores, etc., and is not sensitive to micro-nano scale defects formed in the early damage stage of the material. It cannot effectively detect creep damage of T / P92 steel welds. Summary of the invention

[0004] The present invention provides a method, device, electronic device and storage medium for determining the creep damage level of a weld, so as to realize convenient and quick determination of the creep damage level of a T / P92 steel weld, and improve the efficiency and effectiveness of creep damage detection of a T / P92 steel weld.

[0005] According to one aspect of the present invention, a method for determining a weld creep damage level is provided, comprising:

[0006] Determining a creep damage detection position corresponding to a target workpiece to be measured, wherein the material of the target workpiece to be measured is T / P92 steel;

[0007] Performing nonlinear ultrasonic testing on the target workpiece based on the creep damage detection position to determine an ultrasonic testing coefficient corresponding to the target workpiece;

[0008] The damage level corresponding to the target workpiece is determined according to the ultrasonic detection coefficient and the damage level reference curve.

[0009] According to another aspect of the present invention, there is provided a device for determining a creep damage level of a weld, comprising:

[0010] A detection position determination module, used to determine a creep damage detection position corresponding to a target workpiece to be detected, wherein the material of the target workpiece to be detected is T / P92 steel;

[0011] A damage detection module, configured to perform nonlinear ultrasonic detection on the target workpiece based on the creep damage detection position, and determine an ultrasonic detection coefficient corresponding to the target workpiece;

[0012] The damage level determination module is used to determine the damage level corresponding to the target workpiece according to the ultrasonic detection coefficient and the damage level reference curve.

[0013] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0014] at least one processor; and

[0015] a memory communicatively connected to the at least one processor; wherein,

[0016] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the weld creep damage level determination method described in any embodiment of the present invention.

[0017] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the weld creep damage level determination method described in any embodiment of the present invention when executed.

[0018] The technical solution of the embodiment of the present invention determines the creep damage detection position corresponding to the target workpiece to be measured, wherein the material of the target workpiece to be measured is T / P92 steel, and then performs nonlinear ultrasonic detection on the target workpiece to be measured based on the creep damage detection position, determines the ultrasonic detection coefficient corresponding to the target workpiece to be measured, and finally determines the damage level corresponding to the target workpiece to be measured according to the ultrasonic detection coefficient and the damage level reference curve. Based on the above technical solution, it is possible to conveniently and quickly determine the creep damage level of T / P92 steel welds, thereby improving the efficiency and effectiveness of creep damage detection of T / P92 steel welds.

[0019] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 is a flow chart of a method for determining a weld creep damage level according to Embodiment 1 of the present invention;

[0022] Figure 2 It is a structural schematic diagram of a nonlinear ultrasonic detection test system with multiple working modes provided in Embodiment 1 of the present invention;

[0023] Figure 3 is a schematic diagram of an ultrasonic detection process of a workpiece to be detected according to the first embodiment of the present invention;

[0024] Figure 4 is a flow chart of a method for determining weld creep damage level provided in accordance with Embodiment 2 of the present invention;

[0025] Figure 5 is a schematic diagram of a damage level reference curve provided according to Embodiment 2 of the present invention;

[0026] Figure 6 is a structural schematic diagram of a device for determining creep damage level of a weld provided according to Embodiment 3 of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of an electronic device provided according to Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] Embodiment 1

[0031] Figure 1 A flowchart of a method for determining the creep damage level of a weld is provided for the first embodiment of the present invention. This embodiment can be applied to ultrasonic detection of the creep damage position of the workpiece to be tested, and to obtain the ultrasonic detection coefficient corresponding to the workpiece to be tested, and then determine the creep damage level of the workpiece to be tested according to the ultrasonic detection coefficient. The method can be executed by a device for determining the creep damage level of a weld. The device for determining the creep damage level of a weld can be implemented in the form of hardware and / or software, and the device for determining the creep damage level of a weld can be configured in an electronic device. Figure 1 As shown, the method includes:

[0032] S110, determining a creep damage detection position corresponding to the target workpiece.

[0033] The target workpiece to be measured may be a workpiece that needs to be tested for weld creep damage. For example, the material of the target workpiece to be measured may be T / P92 steel. The creep damage detection position may be understood as a position where creep damage of the workpiece often occurs.

[0034] Specifically, in the process of measuring the creep damage level of steel welds, it is necessary to first determine the workpiece to be tested and use it as the target workpiece. In order to ensure the accuracy of the detection, the creep damage detection position of the target workpiece can be determined first, and then the detection can be performed based on the creep damage detection position.

[0035] It should be noted that the IV-type creep cracking process of the T / P92 steel welded joint is the creep damage process of the weld fine grain zone. During the welding process, the carbides on the coarse austenite grain boundaries in the original parent material are not completely dissolved, but precipitate on the grain boundaries of the fine grain zone formed after welding. During high temperature creep, the carbides that originally played a strengthening role in the fine grain zone of the T / P92 steel weld are reduced, while the carbides on the grain boundaries grow and new coarse carbides are generated on the grain boundaries, becoming the nucleation source of creep cavities, resulting in a decrease in the creep performance of the fine grain zone. When the creep cavities on the grain boundaries grow, aggregate and connect, grain boundary separation occurs. As the separated grain boundaries continue to increase, microcracks are formed on the original austenite grain boundaries until the specimen breaks. The cracks in this area extend in series along the creep voids or micropores generated by the coarse precipitation phase at the grain boundaries, which are typical brittle fracture cracks of creep damage nature. Therefore, type IV cracks generally exist in the fine grain zone and critical zone of the T / P92 series steel weld.

[0036] S120: Perform nonlinear ultrasonic testing on the target workpiece based on the creep damage detection position, and determine an ultrasonic testing coefficient corresponding to the target workpiece.

[0037] Among them, nonlinear ultrasonic testing can be a testing method for non-destructive testing of workpieces, for example, it can use the nonlinear effect of the material during ultrasonic propagation to evaluate the microstructure and internal defects of the material. The ultrasonic testing coefficient can be understood as the nonlinear coefficient corresponding to the workpiece being tested after nonlinear ultrasonic testing.

[0038] Specifically, after determining the creep damage detection position of the target workpiece to be measured, nonlinear ultrasonic detection can be performed on the creep damage detection position to obtain an ultrasonic detection coefficient corresponding to the target workpiece to be measured, and the damage level of the target workpiece to be measured is determined based on the ultrasonic detection coefficient. It can be understood that in solid materials, when ultrasonic waves propagate, they interact with the microstructure inside the material, such as lattices, dislocations, cracks, etc., causing changes in the propagation characteristics of ultrasonic waves. The above changes are manifested as nonlinear effects of ultrasonic waves, that is, ultrasonic waves will generate higher-order harmonics, such as second harmonics and third harmonics, during the propagation process.

[0039] The technical solution provided by the embodiment of the present invention performs nonlinear ultrasonic testing on the target workpiece to determine the nonlinear coefficient of the workpiece, thereby realizing quantitative analysis of internal defects and damage of the material. This can not only improve the sensitivity and accuracy of detection, but also realize quantitative analysis of creep damage of welds.

[0040] On the basis of the above technical solution, the performing nonlinear ultrasonic testing on the target workpiece based on the creep damage detection position includes: performing the nonlinear ultrasonic testing on the creep damage detection position based on an ultrasonic testing system.

[0041] The ultrasonic detection system may be a detection system for performing nonlinear ultrasonic detection on a workpiece. The ultrasonic detection system includes: a nonlinear high-energy ultrasonic tester, a transmitting signal line, a receiving signal line, and a nonlinear ultrasonic detection phased array dedicated probe.

[0042] Specifically, in order to realize fast and accurate nonlinear ultrasonic detection of the workpiece to be detected, an ultrasonic detection system for performing nonlinear ultrasonic detection on the workpiece to be detected can be pre-set, for example, Figure 2 As shown, the ultrasonic detection system can be mainly composed of a broadband RF pulse amplifier, a signal tracking receiver, a phase-sensitive detector, a gate integrator and multiple frequency synthesizers. Using ultrasonic shear waves, a 5MHz phased array probe is selected as the transmitting signal source, and a 10MHz phased array probe is selected as the receiving signal source. According to the characteristic parameters of the probe, the corresponding attenuator, amplifier and high / low pass filter module are selected, and an oscilloscope with a suitable sampling frequency is integrated to form a multivariate nonlinear acoustic test system, and the ultrasonic detection system parameters are set to obtain the best detection sensitivity. Figure 2 The meanings of the marks are: 1. Nonlinear high-energy ultrasonic tester; 2. Transmitting interface; 3. Receiving interface; 4. Transmitting signal line; 5. Receiving signal line; 6. Transmitting signal source; 7. Receiving signal source; 8. Nonlinear ultrasonic detection phased array dedicated probe; 9. Detected workpiece; 10. Weld.

[0043] On the basis of the above technical solution, the nonlinear ultrasonic detection phased array dedicated probe includes a transmitting signal source and a receiving signal source. The nonlinear ultrasonic detection of the creep damage detection position based on the ultrasonic detection system includes: transmitting a shear wave ultrasonic beam to the bottom surface of the target workpiece to be tested through the transmitting signal source, so that the shear wave ultrasonic beam is focused on the creep damage detection position after reflection; and obtaining a reflected ultrasonic beam after reflection from the creep damage detection position through the receiving signal source.

[0044] The transmitting signal source may be an ultrasonic probe for generating a transverse wave ultrasonic beam, and correspondingly, the receiving signal source may be understood as an ultrasonic probe for receiving a reflected ultrasonic beam. The source frequency of the transmitting signal source is a first signal frequency; the source frequency of the receiving signal source is a second signal frequency; the second signal frequency is greater than the first signal frequency; and the receiving signal source adopts a pulse reflection method to receive the signal mode.

[0045] Specifically, the nonlinear ultrasonic detection phased array dedicated probe includes a transmitting signal source and a receiving signal source, and then Figure 3As shown, in the process of detecting the workpiece, the ultrasonic beam emitted by the transmitting signal source is reflected by the bottom surface of the workpiece and then focused along the location where type IV creep damage occurs in the fine grain zone of the groove surface of the T / P92 steel weld, so that the receiving signal source obtains the reflected ultrasonic beam after being reflected by the creep damage detection position. Figure 3 The meanings of the marks in the figure are: 1. Workpiece to be tested; 2. Weld; 3. Fine grain area on weld groove surface; 4. Special probe for nonlinear ultrasonic testing phased array; 5. Transmitting signal source; 6. Receiving signal source; 7. Ultrasonic sound beam.

[0046] It should be noted that due to the presence of creep holes, creep hole chains, and even microscopic creep cracks in the creep damage area of ​​the fine grain zone, the reflected ultrasonic beam contains the ultrasonic nonlinear parameter information of this area, and the phased array focusing law of the two groups of signal sources meets the requirements of oblique-incident shear wave line scanning. Oblique-incident shear wave line scanning is to divide the probe into a sequence of continuous combined chips, which are excited sequentially using the same delay law. Each group of chips emits a parallel shear wave sound beam at a single angle, and scans the workpiece along the length direction of the phased array probe within a certain range to achieve a detection effect similar to the left and right movement of a conventional ultrasonic detection probe.

[0047] On the basis of the above technical solution, the determination of the ultrasonic detection coefficient corresponding to the target workpiece includes: sending the reflected ultrasonic beam to a nonlinear high-energy ultrasonic tester through a receiving signal line, the nonlinear high-energy ultrasonic tester processes the reflected ultrasonic beam to determine the second harmonic nonlinear parameters; and using the second harmonic nonlinear parameters as the ultrasonic detection coefficient corresponding to the target workpiece.

[0048] Among them, the nonlinear high-energy ultrasonic tester can be a device for processing and analyzing ultrasonic signals obtained during the nonlinear ultrasonic testing process. The nonlinear high-energy ultrasonic tester can be used to control the transmitting signal source to transmit a shear wave ultrasonic beam to the bottom surface of the target workpiece to be tested, and to obtain the reflected ultrasonic beam received by the signal source returned by the receiving signal line.

[0049] Specifically, the nonlinear high-energy ultrasonic tester is mainly used to receive and process the reflected ultrasonic beam from the nonlinear ultrasonic detection phased array dedicated probe, receive the reflected ultrasonic beam from the test workpiece through the receiving signal line, process the received reflected ultrasonic beam, extract key nonlinear acoustic characteristics, such as the second harmonic nonlinear parameters, and use the second harmonic nonlinear parameters as the ultrasonic detection coefficient corresponding to the target workpiece.

[0050] On the basis of the above technical solution, the transmitting signal source transmits a shear wave ultrasonic beam toward the bottom surface of the target workpiece to be measured, so that the shear wave ultrasonic beam is focused on the creep damage detection position after reflection, including: the transmitting signal source transmits a shear wave ultrasonic beam toward the bottom surface of the target workpiece to be measured according to the phased array shear wave oblique ray scanning focusing technology; and adjusts the incident angle of the shear wave ultrasonic beam so that the wavefront of the shear wave ultrasonic beam is reflected by the bottom surface of the workpiece to be measured and forms a vertical intersection with the creep damage detection position.

[0051] The incident angle of the shear wave ultrasonic beam may be the angle between the shear wave ultrasonic beam and the plane of the workpiece being measured.

[0052] Specifically, the nonlinear ultrasonic testing test system in the multi-mode is started, and the nonlinear ultrasonic testing phased array dedicated probe is used. The phased array shear wave oblique incident ray scanning focusing technology is selected to excite the shear wave ultrasonic beam, and the incident angle α of the shear wave sound beam is adjusted so that the excited oblique parallel shear wave ultrasonic wavefront is reflected by the bottom surface of the workpiece to form a vertical intersection with the weld groove surface, thereby realizing focusing on the fine grain area of ​​the weld groove surface, and then extracting the nonlinear parameter information of the focused part. It should be noted that the phased ultrasonic testing technology is based on the Huygens-Fresnel principle. The phased array instrument system accurately sets the excitation time of each array element of the phased array probe with a certain delay focusing law, which can realize the deflection, focusing and movement of the ultrasonic beam in the workpiece detection area without moving the probe, which is also called electronic scanning. Compared with conventional ultrasonic testing, it has the advantages of improving the detection performance by controlling the beam characteristics through software, realizing multiple waveform detection with a single phased array probe, the actual optimal focusing effect, the optimal beam angle, etc., which can greatly improve the focusing and controllability of the ultrasonic beam.

[0053] S130. Determine the damage level corresponding to the target workpiece according to the ultrasonic detection coefficient and the damage level reference curve.

[0054] The damage level reference curve may be a pre-established function curve for describing the corresponding relationship between the creep damage level and the ultrasonic detection coefficient.

[0055] Specifically, a nonlinear ultrasonic testing system and method with a multi-mode working mode is used to perform nonlinear ultrasonic testing on the fine grain area of ​​the groove surface of the T / P92 steel weld of the actual workpiece being tested, and the ultrasonic nonlinear coefficient βs of the actual weld of the workpiece being tested is obtained, and then the creep damage of the T / P92 steel weld being tested is graded and evaluated using the damage level reference curve. For example, by finding the ordinate value corresponding to βs in the damage level reference curve, the actual measured performance degradation damage level of the heat-resistant steel component is obtained.

[0056] The technical solution of the embodiment of the present invention determines the creep damage detection position corresponding to the target workpiece to be measured, wherein the material of the target workpiece to be measured is T / P92 steel, and then performs nonlinear ultrasonic detection on the target workpiece to be measured based on the creep damage detection position, determines the ultrasonic detection coefficient corresponding to the target workpiece to be measured, and finally determines the damage level corresponding to the target workpiece to be measured according to the ultrasonic detection coefficient and the damage level reference curve. Based on the above technical solution, it is possible to conveniently and quickly determine the creep damage level of T / P92 steel welds, thereby improving the efficiency and effectiveness of creep damage detection of T / P92 steel welds.

[0057] Embodiment 2

[0058] Figure 4 This is a flow chart of a method for determining creep damage level of a weld provided in the second embodiment of the present invention. This embodiment further introduces the scheme for establishing a damage level reference curve. Figure 4 As shown, before determining the creep damage detection position corresponding to the target workpiece to be tested, the method includes:

[0059] S220. Determine a creep classification test group based on the failure time of the creep crack rupture acceleration test.

[0060] The creep crack fracture accelerated test failure time can be understood as the time required for creep crack fracture of a material or structure under accelerated test conditions. The creep classification test group can be a group of test samples established to determine the creep damage level of T / P92 steel welds. The creep classification test group includes at least two creep classification samples corresponding to the creep damage level.

[0061] Specifically, the initial artificial comparison sample is made of the same material, specification and welding heat treatment process as the pipe of the workpiece to be tested, and whether the weld excess height is retained is also consistent with the pipe of the workpiece to be tested. The length of both sides of the weld is sufficient to arrange the probe, so that the sound beam generated by the probe is reflected in the fine grain area of ​​the weld groove surface through the bottom surface of the workpiece to be tested, and then the initial artificial comparison sample group is divided into 6 parts in the circumferential direction, and 6 initial artificial comparison sample groups of the same size are made, numbered w0-w5, and then the initial artificial comparison sample numbered w0 is subjected to a creep crack fracture acceleration test. The test environment is selected based on the actual working parameters of the heat-resistant steel parts in service. The test temperature can be equal to the actual working temperature, and the test tension can be 10 times the actual load of the material. For example, the initial artificial comparison micro-sample w0 is subjected to a creep crack fracture acceleration test by a high temperature tensile testing machine at the selected test tension and test temperature until it breaks, and the failure time is recorded as τ.

[0062] On the basis of the above scheme, five identical untreated initial artificial comparison micro-specimens w1-w5 were taken, and accelerated tests were carried out under the same test environment according to the equally divided creep crack fracture accelerated test failure time τ. The corresponding accelerated test times were τ / 5, τ2 / 5, τ3 / 5, τ4 / 5, and τ9 / 10, respectively. The test block group obtained from this group of performance degradation accelerated tests is called the artificial comparison sample group for T / P92 steel weld creep damage grading assessment, and they are ws1-ws5. It should be noted that since the accelerated test times corresponding to the artificial comparison samples are different, the creep damage levels generated in the fine grain zone of the weld are also different, and the corresponding nonlinear ultrasonic parameter information is also different. Among them, the creep damage generated by the artificial comparison sample No. WS1 is the mildest, and the creep damage generated by the artificial comparison sample No. WS5 is the most serious.

[0063] S230. Determine the ultrasonic detection coefficient corresponding to each creep classification sample in the creep classification test group based on the ultrasonic detection system, and determine the damage level reference curve based on the ultrasonic detection coefficient.

[0064] Specifically, the phased array line scanning focusing technology was used to perform nonlinear ultrasonic testing on the artificial comparison sample groups ws1-ws5, so that the ultrasonic beam was focused along the location where type IV creep damage occurred in the fine grain area of ​​the T / P92 steel weld groove surface, and the nonlinear coefficient information of the focused location was extracted. The nonlinear ultrasonic parameters of the artificial comparison sample groups with different creep damage levels were obtained, which were β1-β5, corresponding to 1-5 levels of T / P92 steel weld creep damage levels, among which level 1 was the mildest and level 5 was the most severe.

[0065] Exemplarily, taking ws1 as an example, a high-frequency ultrasonic signal is transmitted through a phased array transmitting signal source, propagates in the artificial comparison sample ws1 for nonlinear ultrasonic detection and grading assessment, and nonlinearly interacts with creep damage such as creep holes, creep hole chains, creep cracks, etc. in the fine grain area to generate characteristic high-order harmonics. After being received by the double frequency receiving signal source, the characteristic high-order harmonic signal is transmitted back to the nonlinear high-energy ultrasonic tester, and after signal processing, the second harmonic ultrasonic nonlinear coefficient β1 of the artificial comparison sample is output; repeat the above steps, perform the same operation on each artificial comparison sample, and obtain their respective ultrasonic nonlinear coefficients. That is, the artificial comparison samples ws2, ws3, ws4, and ws5 are tested in turn to obtain the corresponding second harmonic ultrasonic nonlinear coefficients β2, β3, β4, and β5, and then the second harmonic ultrasonic nonlinear coefficients β obtained from the artificial comparison sample group for creep damage grading assessment of T / P92 steel welds are drawn as shown below. Figure 5 The damage level reference curve shown in the figure has a horizontal axis representing the second harmonic ultrasonic nonlinear coefficient β (β1-β5) and a vertical axis representing the creep damage level of the T / P92 steel weld (level 1-5), where level 1 is the mildest and level 5 is the most severe.

[0066] The technical solution of the embodiment of the present invention is based on the most advanced nonlinear ultrasonic nondestructive testing technology, combined with phased array ultrasonic focusing technology to excite the wave source, so that the ultrasonic beam is reflected by the bottom surface of the workpiece and then focused along the type IV creep damage occurrence site of the fine grain zone of the T / P92 steel weld groove surface, and then the nonlinear coefficient information of the focused site is extracted, which can greatly improve the signal-to-noise ratio and resolution of the ultrasonic nonlinear coefficient β of the weld creep damage site and the normal site. By studying and testing the artificial comparison sample group with different degradation levels, the ultrasonic nonlinear coefficients at different weld creep damage levels are obtained, and the grading assessment of the nonlinear ultrasonic detection of the creep damage level of the T / P92 steel weld is realized, which solves the problem of accurate and effective determination of the creep damage level of the T / P92 steel weld.

[0067] Embodiment 3

[0068] Figure 6 This is a schematic diagram of the structure of a device for determining weld creep damage level provided by the third embodiment of the present invention. Figure 6 As shown, the device includes: a detection position determination module 610, a damage detection module 620 and a damage level determination module 630;

[0069] A detection position determination module 610 is used to determine a creep damage detection position corresponding to a target workpiece to be detected, wherein the material of the target workpiece to be detected is T / P92 steel;

[0070] A damage detection module 620, configured to perform nonlinear ultrasonic testing on the target workpiece based on the creep damage detection position, and determine an ultrasonic testing coefficient corresponding to the target workpiece;

[0071] The damage level determination module 630 is used to determine the damage level corresponding to the target workpiece according to the ultrasonic detection coefficient and the damage level reference curve.

[0072] On the basis of the above technical solution, the damage detection module is used to perform the nonlinear ultrasonic detection on the creep damage detection position based on the ultrasonic detection system; wherein the ultrasonic detection system includes: a nonlinear high-energy ultrasonic tester, a transmitting signal line, a receiving signal line, and a nonlinear ultrasonic detection phased array dedicated probe.

[0073] On the basis of the above technical solution, the damage detection module is used to transmit a shear wave ultrasonic beam to the bottom surface of the target workpiece through the transmitting signal source, so that the shear wave ultrasonic beam is focused on the creep damage detection position after reflection; and obtain the reflected ultrasonic beam after reflection from the creep damage detection position through the receiving signal source.

[0074] On the basis of the above technical solution, the damage detection module is used to send the reflected ultrasonic beam to a nonlinear high-energy ultrasonic tester through a receiving signal line. The nonlinear high-energy ultrasonic tester processes the reflected ultrasonic beam to determine the second harmonic nonlinear parameters; and uses the second harmonic nonlinear parameters as ultrasonic detection coefficients corresponding to the target workpiece.

[0075] On the basis of the above technical solution, the damage detection module is used for the transmitting signal source to transmit a shear wave ultrasonic beam toward the bottom surface of the target workpiece to be tested according to the phased array shear wave oblique ray scanning focusing technology; adjust the incident angle of the shear wave ultrasonic beam so that the wavefront of the shear wave ultrasonic wave is reflected by the bottom surface of the workpiece to be tested and forms a vertical intersection with the creep damage detection position.

[0076] Based on the above technical solution, the source frequency of the transmitting signal source is the first signal frequency; the source frequency of the receiving signal source is the second signal frequency; the second signal frequency is greater than the first signal frequency; and the receiving signal source adopts a pulse reflection method to receive the signal mode.

[0077] On the basis of the above technical solution, the device includes: a reference curve determination module, which is used to determine a creep grading test group based on the failure time of a creep crack rupture acceleration test before determining the creep damage detection position corresponding to the target workpiece being tested, wherein the creep grading test group includes at least two creep grading samples corresponding to the creep damage grade; determine the ultrasonic detection coefficient corresponding to each creep grading sample in the creep grading test group based on the ultrasonic detection system, and determine the damage level reference curve based on the ultrasonic detection coefficient.

[0078] The technical solution of the embodiment of the present invention determines the creep damage detection position corresponding to the target workpiece to be measured, wherein the material of the target workpiece to be measured is T / P92 steel, and then performs nonlinear ultrasonic detection on the target workpiece to be measured based on the creep damage detection position, determines the ultrasonic detection coefficient corresponding to the target workpiece to be measured, and finally determines the damage level corresponding to the target workpiece to be measured according to the ultrasonic detection coefficient and the damage level reference curve. Based on the above technical solution, it is possible to conveniently and quickly determine the creep damage level of T / P92 steel welds, thereby improving the efficiency and effectiveness of creep damage detection of T / P92 steel welds.

[0079] The device for determining the weld creep damage level provided in the embodiment of the present invention can execute the method for determining the weld creep damage level provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0080] Embodiment 4

[0081] Figure 7 A schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0082] like Figure 7 As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0083] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0084] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a weld creep damage level determination method.

[0085] In some embodiments, the weld creep damage level determination method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the weld creep damage level determination method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to execute the weld creep damage level determination method in any other appropriate manner (e.g., by means of firmware).

[0086] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0087] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0088] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0089] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0090] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0091] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0092] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0093] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for determining weld creep damage level, characterized in that: include: Determining a creep damage detection position corresponding to a target workpiece to be measured, wherein the material of the target workpiece to be measured is T / P92 steel; Performing nonlinear ultrasonic testing on the target workpiece based on the creep damage detection position to determine an ultrasonic testing coefficient corresponding to the target workpiece; The damage level corresponding to the target workpiece is determined according to the ultrasonic detection coefficient and the damage level reference curve.

2. The method according to claim 1, characterized in that The performing nonlinear ultrasonic testing on the target workpiece based on the creep damage detection position includes: The nonlinear ultrasonic detection is performed on the creep damage detection position based on an ultrasonic detection system; wherein the ultrasonic detection system comprises: a nonlinear high-energy ultrasonic tester, a transmitting signal line, a receiving signal line, and a nonlinear ultrasonic detection phased array dedicated probe.

3. The method according to claim 2, characterized in that The nonlinear ultrasonic detection phased array dedicated probe includes a transmitting signal source and a receiving signal source, and the nonlinear ultrasonic detection of the creep damage detection position based on the ultrasonic detection system includes: Transmitting a shear wave ultrasonic beam toward the bottom surface of the target workpiece through the transmitting signal source, so that the shear wave ultrasonic beam is focused on the creep damage detection position after being reflected; The reflected ultrasonic beam reflected by the creep damage detection position is obtained through the receiving signal source.

4. The method according to claim 3, characterized in that: Determining an ultrasonic detection coefficient corresponding to the target workpiece includes: The reflected ultrasonic beam is sent to a nonlinear high-energy ultrasonic tester through a receiving signal line, and the nonlinear high-energy ultrasonic tester processes the reflected ultrasonic beam to determine a second harmonic nonlinear parameter; The second harmonic nonlinear parameter is used as an ultrasonic detection coefficient corresponding to the target workpiece.

5. The method according to claim 3, characterized in that: The transmitting signal source transmits a shear wave ultrasonic beam to the bottom surface of the target workpiece to be tested, so that the shear wave ultrasonic beam is focused on the creep damage detection position after being reflected, including: The transmitting signal source transmits a shear wave ultrasonic beam toward the bottom surface of the target workpiece to be measured by using a phased array shear wave oblique incident ray scanning and focusing technology; The incident angle of the shear wave ultrasonic beam is adjusted so that the wavefront of the shear wave ultrasonic beam is reflected by the bottom surface of the workpiece to be inspected and forms a vertical intersection with the creep damage inspection position.

6. The method according to claim 3, characterized in that The source frequency of the transmitting signal source is a first signal frequency; the source frequency of the receiving signal source is a second signal frequency; the second signal frequency is greater than the first signal frequency; The receiving signal source adopts a pulse reflection method to receive signal mode.

7. The method according to claim 1, characterized in that Before determining the creep damage detection position corresponding to the target workpiece to be tested, the method further includes: Determining a creep graded test group based on the failure time of the creep crack rupture acceleration test, wherein the creep graded test group includes at least two creep graded samples corresponding to the creep damage grades; The ultrasonic detection coefficient corresponding to each creep classification sample in the creep classification test group is determined based on the ultrasonic detection system, and the damage level reference curve is determined based on the ultrasonic detection coefficient.

8. A device for determining creep damage level of a weld, characterized in that: include: A detection position determination module, used to determine a creep damage detection position corresponding to a target workpiece to be detected, wherein the material of the target workpiece to be detected is T / P92 steel; A damage detection module, configured to perform nonlinear ultrasonic detection on the target workpiece based on the creep damage detection position, and determine an ultrasonic detection coefficient corresponding to the target workpiece; The damage level determination module is used to determine the damage level corresponding to the target workpiece according to the ultrasonic detection coefficient and the damage level reference curve.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can perform the weld creep damage level determination method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the weld creep damage level determination method according to any one of claims 1 to 7 when executed.

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