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208 results about "Ultrasonic testing" patented technology

Ultrasonic testing (UT) is a family of non-destructive testing techniques based on the propagation of ultrasonic waves in the object or material tested. In most common UT applications, very short ultrasonic pulse-waves with center frequencies ranging from 0.1-15 MHz, and occasionally up to 50 MHz, are transmitted into materials to detect internal flaws or to characterize materials. A common example is ultrasonic thickness measurement, which tests the thickness of the test object, for example, to monitor pipework corrosion.

A method for constructing a vertebral artery compression rat model

PendingCN122097020ASurgical veterinaryWound clampsRoutine careLeft vertebral artery
The present application relates to the field of model construction, in particular to a kind of construction method of vertebral artery compression rat model, the inner diameter and blood flow velocity of normal rat vertebral artery are obtained by ultrasonic detection;Anesthetize rat, skin preparation, disinfection, incision, expose vertebral artery;According to the required compression degree, select the tissue clip of corresponding specification, fix on vertebral artery, keep vertebral artery in compression state;Suture incision, disinfection, bandage;After rat awakens, daily care, feed, until incision healing;Ultrasonic detection is carried out, the inner diameter and blood flow velocity of the vertebral artery of rat model are obtained, compared with the inner diameter and blood flow velocity of the vertebral artery of the same age healthy rat or rat before modeling, whether it meets the standard of successful modeling is judged.
Owner:张英琦

A fixing device for ultrasonic testing of a rotary head

The utility model discloses a kind of fixing device for ultrasonic detection rotary head, the utility model belongs to the technical direction of ultrasonic detection equipment, and it includes detection device, top plate and motor, the side of the detection device is connected with probe head by wire, the top plate is below probe head, the top of top plate is provided with clamping assembly, clamping assembly includes motor, the motor is fixedly installed in the inside of top plate, the output end of the motor is connected with connecting plate upwards, the top bearing of connecting plate is connected with rotating shaft, the top of rotating shaft is fixedly connected with support plate, the top of support plate is fixedly connected with support block, the top of support block is fixedly connected with connecting rod, the top of top plate is fixedly connected with fixed plate, the connecting rod is slidably connected with fixed plate, the device solves the problem that current fixing device cannot provide reliable support for rotary head, resulting in displacement or shaking of rotary head.
Owner:JIANGSU SANHE SOUND SOURCE ULTRASONIC TECH

Ultrasonic detection method for integrity of sealing layer of mine tunnel

The present application belongs to the technical field of ultrasonic detection, and discloses a mine roadway sealing layer integrity ultrasonic detection method; the method comprises the following steps: dividing a roadway area, and dividing a regional risk level of each roadway area; generating a sealing layer stress thermal diagram, performing stress partition, and generating a measuring point according to the regional risk level of the roadway area and the sealing layer stress partition; obtaining individual difference characteristics of the measuring point, and dividing the measuring point into different types according to the individual difference characteristics of the measuring point; executing a differentiated detection scheme according to the measuring point type; and adjusting the measuring point type and the regional risk level according to the detection result; the present application is characterized by multi-dimensional risk quantization division and individual differentiation focusing, which improves the detection accuracy, reliability and resource utilization efficiency.
Owner:ANHUI UNIV OF SCI & TECH

Ultrasonic sensors and their manufacturing methods, ultrasonic testing equipment

This application provides an ultrasonic sensor, its manufacturing method, and an ultrasonic testing device. The ultrasonic sensor includes a piezoelectric unit, a first contact electrode, a second contact electrode, a first bent wire, a first external structure, a second bent wire, a second external structure, and a flexible encapsulation. The first contact electrode is connected to a first surface of the corresponding piezoelectric unit, and the second contact electrode is connected to a second surface of the corresponding piezoelectric unit. The flexible encapsulation covers the piezoelectric unit, the first contact electrode, and the second contact electrode. The first contact electrode is electrically connected to the first external structure via the first bent wire, with at least a portion of the first external structure exposed within the flexible encapsulation. The second contact electrode is electrically connected to the second external structure via the second bent wire, with at least a portion of the second external structure exposed within the flexible encapsulation. This design allows for greater flexibility in the ultrasonic sensor, facilitating wider application scenarios.
Owner:HUAWEI TECH CO LTD

A multi-path acoustic wave attenuation phased array ultrasonic testing probe wedge and design method

This disclosure provides a wedge and design method for a multipath acoustic attenuation phased array ultrasonic testing probe. The wedge includes a wedge body, multiple silencing grooves, and a damping block. The extension direction, spacing, and depth of each silencing groove are configured such that at least a portion of the reflected transverse wave generated at the detection surface can be guided to an attenuation interface formed by the groove wall of the silencing groove and the damping block. Furthermore, the reflected longitudinal wave generated at the detection surface undergoes at least six interface reflections within the wedge body before returning to the probe direction. The acoustic characteristics of the damping block are configured to absorb the reflected transverse wave. The reflected transverse wave is attenuated at the attenuation interface through a combination of scattering by the silencing groove and absorption by the damping block. After at least six interface reflections, the acoustic component of the reflected longitudinal wave returning to the probe direction forms a 180° phase difference with the incident longitudinal wave emitted by the probe, thus being attenuated through phase interference.
Owner:TIANJIN HUANENG YANGLIUQING POWER CO LTD +1

A multimodal perception and ai-driven intelligent ultrasound detection system and method

The application discloses a kind of multimodal perception and AI driven intelligent ultrasonic detection system and method, comprising: base platform;Multi-degree-of-freedom robot system, for driving ultrasonic probe moves on human body surface;Multimodal perception unit, including depth camera, infrared scanner and inertial measurement unit IMU;Force perception unit, including for real-time detection ultrasonic probe and human contact pressure thin film pressure sensor;Total control console, with ultrasonic probe, multi-degree-of-freedom robot system, multimodal perception unit, force perception unit electric connection;Total control console is integrated with: ultrasonic image acquisition module, for receiving original ultrasonic signal collected by ultrasonic probe, and generate digitized ultrasonic image data;And central control module, it is configured to: fusion positioning, path planning, force-position collaborative control and intelligent diagnosis feedback.The application realizes the full process automation and standardization of ultrasonic examination, improves ultrasonic detection quality and efficiency.
Owner:NANTONG UNIV

Sensor-based composite delamination detection apparatus and method

PendingCN122385758ATransducerThin membrane
This invention discloses a sensor-based composite material delamination detection device and method, comprising a controller and a scanning drive assembly, with a detection assembly mounted on the scanning drive assembly. The detection assembly includes a cylindrical shell with an open bottom, an ultrasonic transducer fixedly mounted at the top of the inner part of the cylindrical shell, and a piezoelectric ceramic excitation ring sleeved around the ultrasonic transducer. A flexible acoustic capsule is sealed and fixedly connected to the bottom port of the cylindrical shell, the flexible acoustic capsule having a bowl-shaped elastic film structure with a downward convex center. The sealed cavity in the cylindrical shell is completely filled with a shear-thickening fluid. The controller is electrically connected to the piezoelectric ceramic excitation ring. This invention relates to the field of material detection technology. This invention solves the problems of difficulty in simultaneously achieving flexible adaptive bonding and rigid sound field focusing in existing ultrasonic testing of curved surfaces of composite materials, as well as the problems of complex structure and poor detection consistency caused by the lag in traditional electromechanical servo systems.
Owner:TONGLING CORE MATERIAL INTELLIGENT CONTROL TECHNOLOGY CO LTD +1

Muscle measurment pad and probe device including the same

PendingKR1020260113671ASkin contactTransducer
The present invention discloses a muscle measurement pad that is attached to the skin, comprising: a patch-shaped base layer; an adhesive layer applied to the bottom surface of the base layer so as to be adhered to the skin; a transducer installed on the top surface of the base layer; and a gel layer applied to the bottom surface of the transducer so as to be in contact with the skin, wherein the base layer in the area where the transducer is installed is removed, and the transducer is configured to be electrically connected to a probe device, transmit an incident ultrasonic sound to a target, and receive an ultrasonic reflected sound reflected from the target and transmit it to the probe device. According to the present invention, the consistency and reliability of the ultrasonic detection results can be increased by limiting the high degrees of freedom of the transducer.
Owner:DONGGUK UNIV WISE CAMPUS IND -ACAD COOP FOUNDATION

Tower-type ultrasonic testing device

This invention relates to the field of testing equipment, specifically a tower-type ultrasonic testing device, comprising: a clamping fixture on which the workpiece to be tested is fixed; towers on both sides of the clamping fixture, each tower having a six-axis module, with a detection probe mounted on the movable end of the six-axis module; a single detection probe is configured to move from the corresponding six-axis module to a position perpendicular to the surface of the workpiece to inspect the coating on the surface of the workpiece; two detection probes are configured to move from the corresponding six-axis module to positions on either side of the workpiece to be tested and to inspect the interlayer between the two coatings of the workpiece; the workpiece to be tested is fixed on the clamping fixture, and the six-axis module drives the movement of the corresponding inspection probe to achieve sequential inspection of coating and interlayer defects in the workpiece; that is, after the workpiece is fixed once, the inspection of coating and interlayer can be achieved without moving the workpiece for secondary positioning, thus improving the inspection efficiency of the workpiece.
Owner:CHANGZHOU TANKE INTELLIGENT EQUIP CO LTD

A TC4-DT titanium alloy bar for aerospace deep cryogenic fastener and a preparation method thereof

This invention belongs to the field of non-ferrous metal processing technology, and relates to a TC4-DT titanium alloy bar for aerospace cryogenic fasteners and its preparation method. The method includes the following steps: Step 1, selecting TC4-DT titanium alloy R-state round bar billets that have passed ultrasonic testing and have uniform microstructure under low magnification; Step 2, heating and holding the selected billets in a heating furnace, followed by reversible rolling in two stages with diamond-shaped and elliptical-round hole patterns, and then air cooling; Step 3, performing a centerless turning process to remove the outer layer of the rolled billet; Step 4, subjecting the stripped billet to atmospheric heat treatment; Step 5, straightening the heat-treated billet; Step 6, grinding and polishing the straightened billet to obtain TC4-DT titanium alloy bars for aerospace cryogenic fasteners, meeting the requirements of tensile strength ≥1800MPa and A ≥4% under cryogenic conditions of -253℃, thus satisfying the needs of aerospace cryogenic applications.
Owner:西部超导材料科技股份有限公司 +1

Ultrasonic testing device

The invention relates to an ultrasonic testing device and to a method for nondestructively testing a component, in particular a fiber-plastic composite component, having: an ultrasonic testing head; and a liquid nozzle with a liquid inlet, a liquid outlet, and an inner surface which tapers towards the liquid outlet, wherein the liquid nozzle has at least one liquid guiding rib which protrudes inwards into the sound chamber from the tapering inner surface of the liquid nozzle upstream of the ultrasonic testing head.
Owner:FACC

Ultrasonic detection equipment for screen damage

The invention discloses screen damage ultrasonic detection equipment which comprises a base, an expansion part is arranged at the top of the base, a screen embedding plate is arranged on the expansion part, a vibrator is arranged on one side of the bottom of the screen embedding plate, a cover body is arranged at the top of the screen embedding plate, a through hole is formed in the middle of the cover body, and a rotating ring is arranged in the through hole. An auxiliary part is arranged in a central ring opening of the rotating ring, the auxiliary part is mounted on one side of the top of the base, and an ultrasonic probe is arranged on one side of the bottom of the rotating ring; the expansion part comprises a plurality of supporting plates, the supporting plates are fixed to the centers of the four side edges of the top of the base, connecting rods are inserted into the upper portions of the supporting plates, side plates are arranged at the outer ends of the connecting rods, second limiting discs are arranged at the inner ends of the connecting rods, limiting balls are arranged on the sides, away from the connecting rods, of the second limiting discs, and elastic parts are arranged in the middles of the limiting balls. And an inlaying mounting groove is formed in the middle of the screen mesh inlaying plate. The beneficial effects are that damage points of the screen mesh are avoided, and detection accuracy is improved.
Owner:SHANGHAI RUANG ULTRASONIC EQUIP CO LTD

method and device for non-destructive ultrasonic testing of a metal part or weld bead

Method and Device for Non-Destructive Ultrasonic Inspection of a Metal Part or Weld Bead. The invention relates to a method and device for non-destructive ultrasonic inspection of a metal part or weld bead. The device (2) moves along the inspected area (Z) and consists of a transmitting transducer (E1, E2) positioned on one side of the inspected area and two receiving transducers (R1, R2) positioned on the opposite side. The position of each end of a defect is determined by a geometric intersection between two ellipses comprising a first ellipse associated with a first acquisition group and whose foci correspond to the position of the transmitting transducer and one of the two receiving transducers, and a second ellipse associated with a second acquisition group and whose foci correspond to the position of the transmitting transducer and the other receiving transducer. Figure for the abstract: Fig. 1.
Owner:ONET TECH CN

A high temperature resistant couplant for high temperature ultrasonic testing

PendingCN122325661ATetrafluoroborateMeth-
This invention discloses a high-temperature resistant coupling block for high-temperature ultrasonic testing. The coupling block is formed by the polymerization and solidification of an ionic liquid via photoinitiation or thermal initiation, and can be manufactured using 3D printing technology. The ionic liquid contains heat-resistant cations and anions; the heat-resistant cations are specifically one or more of imidazoles, pyrroles, and triazoles; the heat-resistant anions are specifically one or more of bis(trifluoromethanesulfonyl)imide and tetrafluoroborate. The coupling block has an internal heat exchange channel structure. By adjusting the polymer matrix formulation and the geometry of the heat exchange structure, this invention can adjust the mechanical, heat-resistant, and acoustic properties of the coupling block, thereby adapting it to more scenarios. The coupling block is simple to prepare, inexpensive, and exhibits excellent acoustic performance, effectively filling the gap in existing ultrasonic testing methods that cannot effectively detect high-temperature scenarios (such as high-temperature pipes, high-temperature parts, and high-temperature tanks).
Owner:ZHEJIANG UNIV

An underground pipeline depth ultrasonic detection method based on multi-channel echo cooperative fusion

PendingCN122362392ANoiseEngineering
The application provides an underground pipeline depth ultrasonic detection method based on multi-channel echo cooperative fusion, which comprises the following steps: acquiring a digital echo sequence through an array probe formed by a multi-channel ultrasonic transducer; sequentially implementing cascade sliding mean denoising, Hilbert transform envelope extraction and adaptive threshold detection based on noise bottom layer statistics to identify and retain candidate pipeline reflection peak points; according to the corresponding transit time and medium sound velocity of the candidate reflection peak points corresponding to each channel, calculating the initial depth estimation value corresponding to each channel through time-depth conversion, and taking the echo signal-to-noise ratio corresponding to each candidate reflection peak point as a quality index; performing neighborhood clustering with a preset depth tolerance as a constraint, selecting an effective depth cluster, and obtaining the final pipeline depth through weighted average of the echo signal-to-noise ratios of each member in the effective depth cluster after effectiveness determination. The application improves the measurement accuracy of the depth in a multi-channel redundant mutual checking mode.
Owner:TIANJIN UNIV

Method, device, equipment, medium and program for detecting defects of reducers

The application relates to the technical field of nondestructive testing, in particular to a defect detection method, device, equipment, medium and program of a reducing pipe, wherein the method comprises the following steps: generating an actual defect position of the reducing pipe according to a reducing pipe taper, probe position data and defect display depth of ultrasonic wave data; generating an actual defect length of the reducing pipe according to the reducing pipe taper, a radius of an outer surface of the reducing pipe corresponding to the position of the defect and a radius of the outer surface of the reducing pipe at the probe incident point position; generating an actual defect height of the reducing pipe according to the reducing pipe taper and a defect height measurement value of the ultrasonic wave data; and generating a defect detection result of the reducing pipe according to the actual defect position, the actual defect length and the actual defect height of the reducing pipe. Therefore, the problems that, in the related art, ultrasonic detection is based on a flat plate or a fixed curvature assumption, cannot adapt to the continuously changing geometric curved surface of the reducing pipe, causes poor probe coupling, incomplete sound field coverage, poor measurement error and the like are solved.
Owner:GUODIAN SCI & TECH RES INST

A bolt pre-tightening force ultrasonic detection method, system, medium and product

PendingCN122329545ATransducerUltrasonic testing
An ultrasonic testing method, system, medium, and product for bolt preload force are disclosed, relating to the field of bolt preload force testing. The method includes: acquiring the specification parameters of the bolt to be tested, determining the testing angle, and controlling a micro-servo motor to drive an ultrasonic transducer to rotate to the target testing angle; real-time monitoring of the distance between the ultrasonic transducer and the end face of the bolt to be tested; generating a position adjustment command when the distance deviates from a preset standard testing distance range, and controlling the distance within the standard testing distance range; sending a trigger signal to the ultrasonic transducer to control the ultrasonic transducer to emit ultrasonic pulses; acquiring and processing the echo electrical signal to obtain the target electrical signal; extracting the phase characteristic parameters and amplitude characteristic parameters of the target electrical signal; determining the preload force detection value at the target testing angle, and obtaining the current preload force detection result of the bolt to be tested. This application can improve the accuracy of bolt preload force testing.
Owner:BEIJING ENGO TECH CO LTD

A method for preparing a weld specimen with cracks

The present invention provides a method for preparing a weld specimen with a crack, which relates to the technical field of weld specimen preparation. The method comprises the following steps: S1: Process the bevels at the welding ends of two base metals. The main weld is located between the two bevels, and the two base metals are welded at the main weld; S2: Process a first groove on the outer side wall of the base metal, and the first groove penetrates through the main weld; S3: Weld in the first groove to form an induced layer; S4: Process a second groove on the surface of the induced layer, and perform welding in the second groove by means of fusion welding. After welding, perform a cooling treatment to generate cracks; S5: Complete the welding of the cover layer of the main weld, and cover the crack inside the welding material during welding. By adopting the present invention, the crack morphology is realistic, and the position and depth of the crack are easy to control during the preparation process. It can be detected and verified in ultrasonic testing to ensure the reliability of the simulation test results. Compared with the fatigue loading method, this method effectively saves the production cost and time of cracks.
Owner:DONGFANG BOILER GROUP OF DONGFANG ELECTRIC CORP

A method, system, device and storage medium for detecting defects in cable insulation layers

The application discloses a kind of cable insulation layer defect detection method, system, equipment and storage medium, it is related to cable technical field, including the following steps: install ultrasonic testing device on the cable to be detected;Obtain the same normal cable with the cable to be detected, marked as experimental cable;Based on experimental cable, obtain target propagation velocity;Based on ultrasonic testing device, obtain second distance and detection angle;Based on experimental cable and second distance, obtain experimental fitting function;Based on experimental fitting function, obtain angle assignment threshold function;Based on detection angle and angle assignment threshold function, judge whether the insulation layer of the cable to be detected is damaged;The application is used to solve the problem that the existing ultrasonic guided wave cable insulation layer defect technology does not exclude the interference of cable bending and abnormal interference ultrasonic wave on insulation layer defect detection, resulting in low accuracy of cable insulation layer defect.
Owner:YICHU WIRE & CABLE (HUZHOU) CO LTD

A weld ultrasonic beam path correction method of a crystal grain graph neural network

The application discloses a kind of grain map neural network's weld ultrasonic beam path correction method, it is related to the field of welding structure nondestructive testing, by obtaining the EBSD data of weld area, extract grain orientation, grain boundary type and spatial distribution characteristics, construct grain map structure, and calculate initial propagation time weight based on anisotropic sound velocity model;Using graph neural network to learn end to end for grain node and grain boundary edge features, output corrected edge propagation time weight;The time of flight from element to imaging pixel is obtained by shortest path search, and the time of flight predicted by neural network surrogate model is fused and corrected;Finally, the corrected time of flight is used to perform full focus imaging, and the weld defect image after optimizing the beam path is obtained.The method combines material microstructure characteristics and machine learning model, solves the problem that the beam path description is not fine enough in existing weld ultrasonic testing, significantly improves the accuracy and reliability of defect detection.
Owner:DATANG BOILER & PRESSURE VESSEL INSPECTION CENTER CO LTD +3

Optical coupled detection device and method

PendingCN122448827ASignal lightLaser-induced breakdown spectroscopy
The application discloses an optical combined detection device and method, which comprises the following modules: a light source module comprising a continuous laser source and a pulsed laser source; an optical path coupling and regulation module configured to combine and focus pulsed laser, signal light comb generated by the continuous laser and ultrasonic detection laser at the same point; and separate the reflected light beams into different optical paths to output to corresponding detection units; a detection module comprising a first detection unit for collecting reflected light comb signals, a second detection unit for collecting ultrasonic signals and a third detection unit for collecting laser-induced breakdown spectroscopy signals; a signal processing module comprising a first signal processing system for receiving and processing output signals of the first detection unit, a second signal processing system for receiving and processing output signals of the second detection unit and a third signal processing system for receiving and processing output signals of the third detection unit; and a synchronous control module for controlling the emission time of the pulsed laser and the continuous laser and the processing timing of each signal processing system.
Owner:SUZHOU HUAXING YUANCHUANG TECH CO LTD

An insulator defect detection and analysis method based on ultrasonic nondestructive testing

PendingCN122361615AComposite insulatorsUltrasonic velocity
This invention discloses a method for detecting and analyzing insulator defects based on ultrasonic non-destructive testing, comprising the following analytical steps: S1, obtaining simulated insulator defect samples through experimental simulation; S2, acquiring ultrasonic testing data of the simulated insulator defect samples; S3, performing noise reduction and signal enhancement processing; S4, constructing an insulator defect detection model for complex feature extraction and pattern recognition; S5, detecting live insulators to obtain defect classification and identification results; S6, calculating defect depth and lateral positioning using the T-ultrasonic velocity model, and estimating defect size by combining amplitude information; S7, performing high-resolution visualization imaging of internal defects in the insulator. This invention significantly reduces equipment downtime and lowers the risks associated with working at heights and in strong electric field environments through non-contact, live-line detection, thereby significantly improving the efficiency and safety of composite insulator defect detection.
Owner:XUCHANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER

An automatic tracking device for ultrasonic inspection of HFW steel pipes

This invention belongs to the technical field of steel pipe flaw detection equipment, specifically relating to an automatic tracking device for ultrasonic testing of HFW steel pipes. It aims to solve the misjudgment problem caused by commonly used automatic tracking methods during ultrasonic testing of steel pipe welds. The invention includes a connecting component, an adjusting component, a moving component, and an identification component. The connecting component includes two side plates, a guide rod, a sliding sleeve, a translation plate, a mounting plate, and a layout plate, with the layout plate connected to a hoisting and conveying device. A detector probe is installed between the two side plates. The adjusting component includes a vertical plate, a fixed base, a slider, and a driving component. The moving component includes a moving bracket fixedly connected to the slider and arranged below the fixed base, and universal ball bearings installed below the moving bracket. The identification component includes a vision sensor installed on the moving bracket. This invention can improve the signal-to-noise ratio and detection accuracy of ultrasonic testing, increase detection efficiency, and enhance the competitive advantage of high-frequency resistance welded steel pipes.
Owner:CNPC BOHAI EQUIP MFG +2

Method and system for plastic pipe production control based on ultrasonic detection

This application pertains to the field of plastic pipe manufacturing and discloses a method and system for controlling plastic pipe production based on ultrasonic testing. First, multiple sets of extruded wall thickness values ​​corresponding to multiple sets of centrally symmetrical detection points are obtained during the plastic pipe extrusion process. Each set contains two extruded wall thickness values ​​obtained from ultrasonic testing of two corresponding detection points. Then, the difference between the two wall thickness values ​​in each set is calculated as the extruded wall thickness deviation value for that set, and the maximum value among all deviation values ​​is extracted. If the maximum deviation value is less than a preset threshold, an extrusion orifice alignment adjustment value is determined based on this value, and the extrusion orifice is adjusted. The adjustment direction corresponds to the line connecting the detection points to which the maximum deviation value belongs. If the maximum deviation value is greater than or equal to the preset threshold, an extrusion material flow rate adjustment value is first determined based on this value, and the flow rate is adjusted. Then, the corresponding extrusion orifice alignment correction value is obtained, and the extrusion orifice is adjusted accordingly. This solution can improve the effectiveness of ultrasonic testing and wall thickness adjustment in plastic pipe production.
Owner:GUANGDONG LIMIN IND CO LTD

Ultrasonic intelligent nondestructive testing method based on pose adjustment of probabilistic convolutional neural network

The present application relates to an ultrasonic intelligent nondestructive testing method based on pose adjustment of a probabilistic convolutional neural network, and belongs to the technical fields of mechanical engineering, optical engineering, nondestructive testing and automated detection. The method comprises the following steps: initializing ultrasonic testing parameters; generating a standard scanning path for a mechanical arm; pre-processing ultrasonic waveform signals; ultrasonic imaging and defect identification using a probabilistic convolutional neural network; inputting the ultrasonic imaging results into the probabilistic convolutional neural network for defect identification processing, to obtain a classification result of the presence or absence of a defect, a corresponding predicted uncertainty of the defect and defect size information; and determining the classification result of the presence or absence of a defect and the corresponding predicted uncertainty output by the probabilistic convolutional neural network. By introducing a deep learning model to predict the uncertainty as an online feedback quantity, a scanning control mechanism based on uncertainty determination is established, so that the detection process can dynamically adjust the scanning path and the probe pose according to the reliability of the identification result.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Bearing steel ball defect detection method and system combining eddy current and ultrasonic testing

PendingCN122330261ASteel ballUltrasonic testing
This invention relates to the field of bearing steel ball defect detection technology, and discloses a method and system for bearing steel ball defect detection combining eddy current and ultrasonic testing. The method includes: first, acquiring the eddy current impedance plane trajectory and ultrasonic A-scan waveform during the continuous rolling process of the bearing steel ball, obtaining preliminary estimates of the eddy current and ultrasonic defect depths respectively, and using these estimates to invert the hardness gradient parameter set of the current bearing steel ball; then, reconstructing the conductivity distribution function and sound velocity distribution function based on the hardness gradient parameter set, performing gradient correction on the preliminary estimates of the eddy current and ultrasonic defect depths to obtain the true defect depth value, and combining this with the designed hardened layer depth to perform a three-level defect classification judgment. This invention can eliminate the dual-modal depth positioning deviation caused by the material radial gradient, achieving high-precision detection and classification judgment of bearing steel ball defect depth.
Owner:PU JIANG ZHONG BAO GANG QIU YOU XIAN GONG SI

Automatically ventable hand-held ultrasonic probe and method of use

PendingCN122320592AMedicineUltrasonic testing
This invention belongs to the technical field of ultrasonic testing equipment, and particularly relates to a handheld ultrasonic probe with automatic air venting and its usage method. One type of handheld ultrasonic probe with automatic air venting includes: a probe housing, a probe disposed within the probe housing, and an arc-shaped contact surface at the end near the user. The probe housing has several grooves near the probe. The grooves extend along the width of the arc-shaped contact surface, and a cleaning block is slidably disposed within each groove. Initially, the end wall of the cleaning block is coplanar with the end wall of the probe housing. During use, the cleaning block contracts and slides under the pressure of the coupling agent to form an air venting channel, used to expel air bubbles between the probe and the skin. When the probe housing detaches from the skin, the cleaning block resets and moves to remove residual coupling agent. The radially arranged grooves and the cleaning block slidably disposed within the grooves create an air venting channel during use.
Owner:XUZHOU YONGKANG ELECTRONICS SCI & TECH CO LTD

An ultrasonic signal classification and recognition method, medium and device

The application discloses an ultrasonic signal classification and identification method, medium and equipment, and belongs to the technical field of signal processing and deep learning; the method comprises the following steps: collecting ultrasonic signals of excitation channels and receiving channels under different working conditions in structural ultrasonic detection, reconstructing channel signals into time sequence samples; inputting the time sequence samples into a double-branch deep learning model, and outputting working condition category probability distribution results; the double-branch deep learning model obtains the working condition category probability distribution results through a time domain feature extraction module, a space domain feature extraction module, a feature fusion module and a classification and prediction module; the application fully considers and utilizes the excitation and receiving signal features in ultrasonic detection, adopts a time and space domain feature fusion mode to fully capture multi-scale feature information and perform deep-level fusion, solves the problem that a single network is difficult to represent ultrasonic signal features from a multi-scale level, has strong engineering practicability, and can be widely applied in the fields of structural nondestructive detection, structural health monitoring and the like.
Owner:SHANDONG JIANZHU UNIV

An ultrasonic testing device

This utility model relates to the field of ultrasonic testing technology, specifically to an ultrasonic testing device. The device includes a probe body and a detector. A connecting wire is installed at one end of the probe body, and the end of the connecting wire away from the probe body is electrically connected to the detector. Several control buttons are installed on the surface of the detector. An extension device is provided on the arc surface of the probe body. The extension device includes a fixing ring, which is fixedly connected to the arc surface of the probe body. An L-shaped plate is fixedly connected to the arc surface of the fixing ring, and an extension chamber is slidably connected to the surface of the L-shaped plate. This invention solves the problem that when workers need to probe in confined spaces, the probe body is too short to be inserted into the limited space, making it difficult to probe specific targets in narrow locations, thus affecting the work efficiency of the workers.
Owner:NO 2 ENG CO FOR ELECTRIC POWER CONSTR OF ANHUI PROV

A method for calibrating phased array ultrasonic testing parameters of flue gas turbine blades

PendingCN122306958ATurbine bladeFlue gas
This invention relates to the field of detection technology, specifically to a method for calibrating phased array ultrasonic testing parameters for flue gas turbine motorized blades. Addressing the application scenario where the blade body, root, and their interface regions of flue gas turbine motorized blades have complex structures and significant differences in testing locations, this method establishes a test block system adapted to the specific testing object. It then sequentially completes basic calibration, sensitivity and compensation parameter calibration, and verification correction. This ensures that the formation process of the testing process parameters has a clear hierarchy, specificity, and closed-loop nature, thereby enabling the final set of target testing process parameters to match the actual structural characteristics of the flue gas turbine motorized blades, the acoustic beam entry conditions, and subsequent testing requirements.
Owner:SHENZHEN ZHONGCHANG DETECTION TECH CO LTD