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On-line ultrasonic nondestructive testing method based on 3D printing

A 3D printing, non-destructive testing technology, applied in the analysis of solids using sonic/ultrasonic/infrasonic waves, material analysis using sonic/ultrasonic/infrasonic waves, and measuring devices, etc. Low damage and low price effects

Active Publication Date: 2019-01-11
XI AN JIAOTONG UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that current 3D printed parts cannot efficiently detect defects, the present invention provides an online ultrasonic non-destructive testing method based on 3D printing

Method used

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  • On-line ultrasonic nondestructive testing method based on 3D printing
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  • On-line ultrasonic nondestructive testing method based on 3D printing

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Such as figure 1 As shown, a kind of online ultrasonic nondestructive testing method based on 3D printing provided by the present invention comprises the following steps:

[0029] 1) Establish a 3D printing model and convert it into an STL file, and obtain the manufacturing information of the printing layer after processing with the cutting software; specifically include:

[0030] Obtain the image to be printed and the printing path of the printing layer after processing by the segmentation software.

[0031] 2) According to the shape of nozzles of different 3D printers and the physical information (material properties, thickness, etc.) The probe adopts an air-coupled ultrasonic detection probe, and the type of the air-coupled probe is determined according to the nature of the material (such as metal, composite material, plastic, etc.) and the ...

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Abstract

The invention discloses an on-line ultrasonic nondestructive testing method based on 3D printing, and belongs to the field of ultrasonic nondestructive testing. The on-line ultrasonic nondestructive testing method includes the steps that a 3D printing model is established and converted to an STL file, and manufacturing information of a printing layer is obtained by using segmentation software processing; according to the shapes of different 3D printer nozzles and physical information of the to-be-printed pieces (the material properties, thickness and the like), a suitable air ultrasonic probeis selected to cooperate with the corresponding printing nozzle to set printing and scanning parameters; ultrasonic information obtained by the ultrasonic probe is then subjected to signal processingand image processing, a threshold is set to distinguish unreserved defects and unrelated defects, and the total defect rate of a detection layer is counted; by comparing an image after ultrasonic processing with an image after segmentation processing on line, and the printing parameters can be adjusted in time or even printing of bad forming can be stopped; and finally, ultrasonic imaging is subjected to three-dimensional reconstruction, and the forming quality of all printed products is archived.

Description

technical field [0001] The invention belongs to the field of ultrasonic nondestructive testing, in particular to an online ultrasonic nondestructive testing method based on 3D printing. Background technique [0002] 3D printing technology adopts the method of additive manufacturing, that is, the material is accumulated layer by layer to achieve the final predetermined shape; this process is different from traditional subtractive and equal material manufacturing, such as turning, milling, planing, grinding, casting (making ), forging (forging), welding (joining), etc., which save a high degree of material, and because of its "bottom-up" processing method, it is easier to realize hollow structures and particularly complex structures. The realization process is to carry out three-dimensional modeling of the target model, and make two-dimensional plane data through the segmentation software, and the 3D printing mechanism performs two-dimensional plane components according to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/06
CPCG01N29/069G01N2291/023
Inventor 潘希德史晓薇
Owner XI AN JIAOTONG UNIV
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