Ultrasonic detection control method and ultrasonic detection control device for 3D printed piece

A technology of ultrasonic detection and control method, which is applied in the direction of using sound wave/ultrasonic wave/infrasonic wave to analyze solids, etc., which can solve problems such as missed detection, and achieve the effect of improving signal-to-noise ratio and defect detection rate

Active Publication Date: 2015-05-06
ALLRISING BEIJING TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problem that in the prior art, the method of using an ultrasonic testing system to detect internal defects of 3D printed parts is likely to cause missing inspections, the present invention provides an ultrasonic testing control method and device for 3D printed parts

Method used

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  • Ultrasonic detection control method and ultrasonic detection control device for 3D printed piece
  • Ultrasonic detection control method and ultrasonic detection control device for 3D printed piece
  • Ultrasonic detection control method and ultrasonic detection control device for 3D printed piece

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Embodiment Construction

[0036] The technical solution of the present invention will be further described in detail in conjunction with the accompanying drawings and embodiments.

[0037] figure 1 It shows a schematic flow chart of an ultrasonic detection control method for 3D printed parts in this embodiment, as shown in figure 1 As shown, the present embodiment provides an ultrasonic detection control method for 3D printed parts, including:

[0038] S1. For each point to be detected inside the 3D printed part to be detected, determine a corresponding detection position on the surface of the 3D printed part to be detected.

[0039] Specifically, for each point to be detected inside the 3D print to be detected, determine the point at which a straight line passing through the point to be detected and perpendicular to the direction of the growth surface of the 3D print to be detected passes through the surface of the 3D print to be detected is the detection position corresponding to the point to be de...

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Abstract

The invention relates to the technical field of ultrasonic nondestructive testing and in particular relates to an ultrasonic detection control method and an ultrasonic detection control device for a 3D printed piece. The method comprises the following steps: according to the normal direction of a detection point which corresponds to a to-be-detected point for a to-be-detected 3D printed piece and the workpiece growth surface direction, determining an incidence angle of ultrasonic detection sound beams entering the to-be-detected 3D printed piece from the detection position by combining the refractive index of the printed piece, and further controlling a probe of the ultrasonic detection equipment to scan according to the incidence angle of the detection position which corresponds to each to-be-detected point. Therefore, the signal to noise ratio and the defect detection rate of the 3D printed piece can be improved.

Description

technical field [0001] The invention relates to the technical field of ultrasonic nondestructive testing, in particular to an ultrasonic testing control method and device for 3D printed parts. Background technique [0002] 3D printing is a kind of rapid prototyping technology. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. 3D printing is usually achieved using digital technology material printers. [0003] During the printing process, certain defects often appear inside the 3D printed parts. Usually, these defects have a certain directionality, such as inclusions, porosity, shrinkage cavities, micro-cracks and other defects, which are mainly on the growth surface (printing surface). When the workpiece is a flat workpiece, the growth surface is generally parallel to the surface of the workpiece; when the workpiece is a curved surface, the growth surface and the su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04
Inventor 郭大勇阙开良吴越
Owner ALLRISING BEIJING TECH
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