A high-precision adaptive three-dimensional non-destructive testing method for additive manufacturing
An additive manufacturing and non-destructive testing technology, applied in the direction of using radiation for material analysis, can solve problems such as inability to locate, poor detection and imaging effects, and achieve the effects of improving accuracy, reducing misjudgment, and low cost
Active Publication Date: 2019-10-22
江苏载驰科技股份有限公司
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[0007] In view of the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a high-precision three-dimensional non-destructive testing method for additive manufacturing, which solves the problems in the prior art that the defect detection cannot locate the specific position of the defect, and the detection imaging effect is poor.
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[0023] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with examples and accompanying drawings, and the contents mentioned in the implementation modes are not limitations of the present invention.
[0024] A high-precision three-dimensional non-destructive testing method for additive manufacturing of the present invention comprises the following steps:
[0025] For example figure 1 The shown additive manufacturing workpiece is subjected to non-destructive testing, and the thickness of the workpiece and the local complexity of the workpiece are judged. It can be found that the thickness of the workpiece I area is relatively thick, which is a thick-walled area, and the ultrasonic testing method is used; the thickness of III area is small, which is a thin-walled area. , using X-ray detection method; Ⅱ area thickness changes are complex, using X-ray and ultrasonic coupling detection method. ...
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The invention relates to an additive manufacturing high-precision self-adaptive three-dimensional nondestructive inspection method, mainly relates to the self-adaptive coupling application of X-ray detection and ultrasonic phase control detection, and belongs to the field of additive manufacturing workpiece nondestructive inspection. The inspection method mainly comprises the following steps of selecting the nondestructive inspection method in a self-adaptive way by aiming at the differences of shapes and dimensions of an additive manufacturing workpiece in different positions, i.e., singly using X-ray inspection and ultrasonic detection or using X rays and ultrasound to inspect the workpiece in a coupling way; during the detection, performing real-time processing on images generated by the signals by a computer to obtain the concrete three-dimensional positions and sizes of the defects. The self-adaptive three-dimensional nondestructive inspection method has the advantages that the detection efficiency is greatly improved; the detection error caused by improper method selection is avoided; in addition, the X-ray and ultrasonic coupling detection is used for complicated positions; the precision is higher than that of a pure detection method, so that the high-precision three-dimensional defect detection and positioning can be realized; the wrong judgment is reduced.
Description
technical field [0001] The invention belongs to the field of non-destructive testing of additive manufacturing workpieces, in particular to a high-precision self-adaptive three-dimensional non-destructive testing method for additive manufacturing. Background technique [0002] Additive manufacturing Additive manufacturing (AM) technology is based on the idea of calculus. It is a technology that accumulates materials layer by layer through computer-aided design (CAD) design data to manufacture solid parts. Compared with traditional material removal (cutting) technology , is a “bottom-up” material-additive manufacturing method. This technology has been widely used in the automobile industry and aerospace industry at home and abroad, such as the production of high-performance aero-engine parts, the production of automobile exhaust nozzles, etc. Additive manufacturing has the advantages of high efficiency, high performance, and low cost, and is especially suitable for the pro...
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IPC IPC(8): G01N23/04
Inventor 占小红周俊杰余海松张才林
Owner 江苏载驰科技股份有限公司