An industrial CT detection comparison block, its manufacturing method, and its detection method.

Abstract

This invention belongs to the field of nondestructive testing technology, and discloses an industrial CT inspection comparison block, its manufacturing method, and its testing method. The industrial CT inspection comparison block includes an additive manufacturing block with multiple blind holes of different sizes, multiple square grooves of different sizes, and multiple strip grooves of different sizes, spaced apart, formed on it. The diameter and depth of any blind hole are the same. The manufacturing method of the industrial CT inspection comparison block includes printing the additive manufacturing block using an additive printing method, and then using a laser processing method to form multiple blind holes, multiple square grooves, and multiple strip grooves on the additive manufacturing block. The testing method of the industrial CT inspection comparison block includes using an industrial CT inspection system to inspect the blind holes, square grooves, and strip grooves respectively, to determine the detection capability of the industrial CT inspection system for hole-like defects, delamination defects, and crack-like defects.

Description

Technical Field

[0001] This invention belongs to the field of nondestructive testing technology, and particularly relates to an industrial CT inspection comparison block, its manufacturing method, and its testing method. Background Technology

[0002] Additive manufacturing (AM) is an emerging manufacturing technology that uses digital models to build up materials layer by layer to create physical objects. This technology has become one of the core technologies that must be mastered in product development in fields such as aerospace. However, the generation and propagation of defects are unavoidable during the fabrication and in-service processes of additively manufactured structural components; therefore, defect detection and assessment are crucial.

[0003] Industrial Computed Tomography (CT) inspection technology is not limited by the material type, appearance, or surface condition of the object being inspected. It can directly visualize the spatial distribution, shape, and size of target details. Therefore, industrial CT inspection systems can effectively detect defects in additively manufactured structural parts. The inspection capability of an industrial CT inspection system is determined by its inspection of a control block. Artificial defects on the control block serve as the basis for verifying the inspection capability of the industrial CT inspection system and determining whether the additively manufactured structural part passes industrial CT inspection.

[0004] Currently, existing comparative test blocks only have a single artificial defect. Therefore, it is only possible to determine the detection capability of industrial CT inspection systems for a single artificial defect, but not for multiple types of defects. Consequently, it is impossible to determine whether the inspection results of industrial CT inspection systems for additive manufacturing structural parts are accurate. Summary of the Invention

[0005] The purpose of this invention is to provide an industrial CT inspection comparison block, manufacturing method, and inspection method, which can accurately detect the ability of an industrial CT inspection system to detect multiple types of defects on additively manufactured structural parts.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An industrial CT detection comparison block includes an additively manufactured block, on which are formed multiple blind holes of different sizes and spaced apart, multiple square grooves of different sizes and spaced apart, and multiple strip grooves of different sizes and spaced apart, wherein the diameter and depth of the same blind hole are the same.

[0008] Preferably, the diameter of the blind hole is 0.05-1.5 mm.

[0009] Preferably, the square groove has a width of 0.05-1.5 mm and a depth of 0.05-0.3 mm.

[0010] Preferably, the groove width is 0.02-0.13 mm, the groove length is 0.05-3 mm, and the groove depth is 0.05-1.27 mm.

[0011] Preferably, the multiple blind holes are evenly arranged along an arc or a straight line.

[0012] Preferably, the plurality of square grooves are evenly arranged along an arc or a straight line.

[0013] Preferably, the plurality of the strip grooves are evenly arranged along an arc or a straight line.

[0014] Preferably, the additively manufactured block is a cylinder or a cuboid.

[0015] A method for manufacturing an industrial CT detection contrast test block, used to manufacture the aforementioned industrial CT detection contrast test block, comprising:

[0016] The additively manufactured block was printed using an additive printing method.

[0017] Multiple blind holes, multiple square grooves, and multiple strip grooves are formed on the additive manufacturing block using a laser processing method.

[0018] A method for detecting an industrial CT contrast test block, using the aforementioned industrial CT contrast test block, comprising:

[0019] The blind holes were inspected using an industrial CT inspection system to determine whether the industrial CT inspection system could detect hole-type defects.

[0020] The industrial CT inspection system was used to inspect multiple square grooves to determine whether the industrial CT inspection system could detect layered defects.

[0021] An industrial CT inspection system was used to inspect multiple of the strip-shaped grooves to determine whether the industrial CT inspection system could detect crack-like defects.

[0022] The beneficial effects of this invention are:

[0023] This invention provides an industrial CT inspection comparison block. The additively manufactured block has multiple blind holes of different sizes that are spaced apart. The diameter and depth of the same blind hole are the same. The different sizes of blind holes are used to simulate hole-like defects, enabling the testing of the industrial CT inspection system's ability to detect hole-like defects of different sizes. The additively manufactured block also has multiple square grooves of different sizes that are spaced apart. These square grooves of different sizes are used to simulate delamination-like defects, enabling the testing of the industrial CT inspection system's ability to detect delamination-like defects. Furthermore, the additively manufactured block has multiple strip grooves of different sizes that are spaced apart. These strip grooves of different sizes are used to simulate crack-like defects, enabling the testing of the industrial CT inspection system's ability to detect crack-like defects.

[0024] The present invention also provides a method for manufacturing an industrial CT inspection comparison block. The additive manufacturing block is printed by additive printing and blind holes, square grooves and strip grooves are processed by laser processing. The resulting comparison block can detect the detection capability of industrial CT inspection system for multiple types of defects on additive manufacturing structural parts. Moreover, the blind holes, square grooves and strip grooves processed by laser are more precise in size, thereby ensuring the accuracy of the inspection.

[0025] The present invention also provides an industrial CT inspection comparison test block inspection method, which uses an industrial CT inspection system to inspect blind holes, square grooves and strip grooves respectively, to determine the detection capability of the industrial CT inspection system for hole-type defects, delamination-type defects and crack-type defects. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the industrial CT detection comparison test block provided in Embodiment 1 of the present invention.

[0027] In the picture:

[0028] 1. Additive manufacturing of bulk materials;

[0029] 11. Blind hole; 12. Square groove; 13. Strip groove. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "installed" should be interpreted broadly. For example, they can refer to a mounting connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] Example 1

[0035] like Figure 1 As shown, this embodiment provides an industrial CT detection comparison test block, which includes an additively manufactured block 1. The additively manufactured block 1 has multiple blind holes 11 of different sizes and spaced apart from each other, multiple square grooves 12 of different sizes and spaced apart from each other, and multiple strip grooves 13 of different sizes and spaced apart from each other. The diameter and depth of the same blind hole 11 are the same.

[0036] The industrial CT inspection comparison block provided in this embodiment uses blind holes 11 of different sizes to simulate hole-like defects, which can be used to test the industrial CT inspection system's ability to detect hole-like defects of different sizes; multiple square grooves 12 of different sizes are used to simulate delamination defects, which can be used to test the industrial CT inspection system's ability to detect delamination defects; and strip grooves 13 of different sizes are used to simulate crack-like defects, which can be used to test the industrial CT inspection system's ability to detect crack-like defects. The above-mentioned detection capability indicates whether the industrial CT inspection system can detect defects of various set sizes. If it can detect them, it means it has the detection capability; if it cannot detect them, it means it does not have the detection capability. At the same time, for the defects that the industrial CT inspection system can detect, it measures the size of the defect. Since the accurate dimensions of the blind holes 11, square grooves 12, and strip grooves 13 are known, the detection accuracy of the industrial CT inspection system can be calculated by using the measured dimensions and the accurate dimensions. The industrial CT inspection comparison test block proposed in this embodiment can accurately detect the industrial CT inspection system's ability to detect multiple types of defects on additively manufactured structural parts, thereby ensuring the accuracy of the industrial CT inspection system in detecting multiple types of defects on additively manufactured structural parts.

[0037] Specifically, the additively manufactured block 1 is a cylinder or a cuboid. In this embodiment, the additively manufactured block 1 is a cylinder with a diameter of 20 mm and a height of 3 mm.

[0038] Optionally, the blind hole 11, the square groove 12, and the strip groove 13 are all located on the same plane of the additive manufacturing block 1.

[0039] Specifically, the diameter of the blind hole 11 is 0.05-1.5 mm. Used to simulate micro-hole defects, in this embodiment, six blind holes 11 are provided, with diameters of 0.05 mm, 0.1 mm, 0.2 mm, 0.3 mm, 0.5 mm, and 1.5 mm, respectively. Of course, the size of the blind hole 11 can also be other sizes, determined by actual requirements.

[0040] Optionally, multiple blind holes 11 are evenly arranged along an arc or a straight line. In this embodiment, six blind holes 11 are evenly distributed along an arc. The blind holes 11 are located on a circle with a radius of 2.5 mm, centered on the top surface of the cylindrical additive manufacturing block 1.

[0041] Specifically, the width of the square groove 12 is 0.05-1.5mm, and the depth of the square groove 12 is 0.05-0.3mm. In this embodiment, six square grooves 12 are provided, each with a depth of 0.2mm and widths of 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.5mm, and 1.5mm, respectively. Of course, the dimensions of the square groove 12 can also be other, and the specific dimensions are determined by actual needs.

[0042] Optionally, multiple square grooves 12 are evenly arranged along an arc or a straight line. In this embodiment, six square grooves 12 are evenly arranged along an arc. The square grooves 12 are located on a circle with a radius of 4 mm, centered on the top surface of the additively manufactured block 1.

[0043] Specifically, the width of the strip groove 13 is 0.02-0.13 mm, the length is 0.05-3 mm, and the depth is 0.05-1.27 mm. In this embodiment, four strip grooves 13 are provided, each with a depth of 0.2 mm, a length of 1 mm, and widths of 0.02 mm, 0.04 mm, 0.06 mm, and 0.1 mm, respectively. Of course, the dimensions of the strip groove 13 can also be other than those specified in the actual requirements.

[0044] Optionally, multiple strip grooves 13 are evenly arranged along an arc or a straight line. In this embodiment, four strip grooves 13 are evenly arranged along an arc. The strip grooves 13 are located on a circle with a radius of 6 mm centered on the top surface of the additively manufactured block 1.

[0045] Example 2

[0046] This embodiment provides a method for manufacturing an industrial CT detection comparison test block, used to manufacture the industrial CT detection comparison test block proposed in Embodiment 1, wherein the same or corresponding parts as in Embodiment 1 are marked with the same reference numerals as in Embodiment 1. The manufacturing method includes:

[0047] First, additive manufacturing block 1 is printed using additive printing method.

[0048] Then, multiple blind holes 11, multiple square grooves 12 and multiple strip grooves 13 are formed on the additive manufacturing block 1 using laser processing methods.

[0049] The industrial CT inspection comparison block manufacturing method provided in this embodiment prints an additive manufacturing block 1 using additive printing and processes precisely sized blind holes 11, square grooves 12, and strip grooves 13 using laser processing. This can be used to test the industrial CT inspection system's ability to detect defects on additively manufactured structural parts. By inspecting the blind holes 11, square grooves 12, and strip grooves 13 using the industrial CT inspection system, the system's ability to detect multiple types of defects on additively manufactured structural parts is obtained, thereby ensuring the accuracy of the industrial CT inspection system in detecting multiple types of defects on additively manufactured structural parts. By measuring the dimensions of the blind holes 11, square grooves 12, and strip grooves 13 of known dimensions using the industrial CT inspection system, the detection accuracy of the industrial CT inspection system is verified.

[0050] Example 3

[0051] This embodiment provides a method for detecting industrial CT detection comparison blocks, using the industrial CT detection comparison block proposed in Embodiment 1. Components identical or corresponding to those in Embodiment 1 are labeled with the corresponding reference numerals from Embodiment 1. The detection method includes:

[0052] Multiple blind holes 11 were inspected using an industrial CT inspection system to determine whether the industrial CT inspection system could detect hole-type defects.

[0053] An industrial CT inspection system was used to inspect multiple square grooves 12 to determine whether the industrial CT inspection system could detect layered defects.

[0054] An industrial CT inspection system was used to inspect multiple strip grooves 13 to determine whether the industrial CT inspection system could detect crack-like defects.

[0055] The detection of the above three types of defects can be performed in any order, either simultaneously or sequentially. If an industrial CT inspection system can detect a defect of a certain size and type, it means that the industrial CT inspection system has the capability to detect defects of that size and type; if it cannot detect them, it means that it does not have the capability to detect them.

[0056] For defects that can be detected, the size of the defect can be measured using an industrial CT inspection system. Then, based on the known accurate size of the defect, the error between the measured size and the accurate size can be calculated to determine the detection accuracy of the industrial CT inspection system.

[0057] For detailed methods of using an industrial CT inspection system to detect and measure the size of a defect on a comparison test block, please refer to existing technologies, which will not be elaborated here.

[0058] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An industrial CT detection contrast test block, characterized in that, The application discloses an industrial CT detection contrast test block manufacturing method, and relates to the technical field of industrial CT detection contrast test blocks. The diameters and depths of the blind holes (11) are the same. The square grooves (12) are arranged along a circular arc or a straight line. The square grooves (12) are arranged along a circular arc or a straight line. The square grooves (12) are arranged along a circular arc or a straight line. The industrial CT detection contrast test block manufacturing method comprises the following steps: The additive manufacturing block (1) is printed by using an additive printing method.

2. The industrial CT detection contrast test block of claim 1, wherein, The blind holes (11), the square grooves (12) and the strip grooves (13) are manufactured on the additive manufacturing block (1) by using a laser processing method.

3. The industrial CT detection contrast test block of claim 1, wherein, The diameters of the blind holes (11) are 0.05-1.5 mm.

4. The industrial CT detection contrast test block of claim 1, wherein, The widths of the square grooves (12) are 0.05-1.5 mm, and the depths of the square grooves (12) are 0.05-0.3 mm.

5. The industrial CT detection contrast test block of any one of claims 1-4, wherein, The widths of the strip grooves (13) are 0.02-0.13 mm, the lengths of the strip grooves (13) are 0.05-3 mm, and the depths of the strip grooves (13) are 0.05-1.27 mm.

6. An industrial CT detection contrast test block detection method, characterized in that, The additive manufacturing block (1) is a cylinder or a cuboid. The application further discloses an industrial CT detection contrast test block comprising the additive manufacturing block (1). The blind holes (11) are detected by using an industrial CT detection system to determine whether the industrial CT detection system can detect hole defects. The square grooves (12) are detected by using an industrial CT detection system to determine whether the industrial CT detection system can detect layering defects. The strip grooves (13) are detected by using an industrial CT detection system to determine whether the industrial CT detection system can detect crack defects.

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