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Method for detecting defects of additive manufacturing part based on ultrasonic phased array

An ultrasonic phased array and additive manufacturing technology, which is applied in the use of sound waves/ultrasonic waves/infrasonic waves for material analysis, use of sound waves/ultrasonic waves/infrasonic waves to analyze solids, and measuring devices, etc., can solve problems such as poor detection results and missed detection , to achieve the effect of improving the positioning accuracy

Inactive Publication Date: 2020-07-07
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

[0004] In view of the shortcomings of conventional ultrasonic testing technology, such as poor detection effect and missed detection, the purpose of the present invention is to provide a detection method for defects in additively manufactured parts based on ultrasonic phased array, which can greatly improve the detection efficiency. Efficiency, improve the detection rate of defects, very suitable for non-destructive testing of metal additive parts

Method used

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  • Method for detecting defects of additive manufacturing part based on ultrasonic phased array
  • Method for detecting defects of additive manufacturing part based on ultrasonic phased array
  • Method for detecting defects of additive manufacturing part based on ultrasonic phased array

Examples

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Embodiment 1

[0042] This embodiment is to detect the defects of titanium alloy parts prepared by laser additive manufacturing technology, and the comparison test block used is a titanium alloy test block prepared by the same material and process.

[0043] Explanation of terms:

[0044] Group:

[0045] In data acquisition analysis software, a group is a defined configuration of all parameters required to generate one or more ultrasonic sound velocities using a conventional or phased array probe. A group can use the same probe for pulse transmission and signal reception, or use two different probes to transmit pulses and receive signals respectively, and one probe can be used by multiple groups.

[0046] To calibrate the sound velocity delay:

[0047] The purpose of calibrating phased array sound velocity delays is to adjust the delay of each sound velocity so that all sound velocity-acquired indications of a known reflector defect appear at the correct depth. Each group must perform this...

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Abstract

The invention discloses a method for detecting defects of an additive manufacturing part based on an ultrasonic phased array, and belongs to the technical field of ultrasonic nondestructive detection.The method is carried out by adopting an ultrasonic phased array detection system, and comprises the steps of selecting an appropriate ultrasonic phased array detection instrument, an appropriate probe, an appropriate wedge block, an appropriate reference block and an appropriate coupling agent; establishing a detection group on data acquisition and analysis software, setting a focusing rule, calibrating sound velocity delay, calibrating sensitivity and establishing a TCG curve; adopting a manual scanning mode to carry out 100% detection on the part; and finally, collecting, storing and analyzing the detection information. According to the ultrasonic phased array detection, a plurality of detection wafers are integrated into one probe, so the detection efficiency can be greatly improved,and intuitive data imaging can be carried out.

Description

technical field [0001] The invention relates to the technical field of ultrasonic nondestructive testing, in particular to a method for detecting defects of additively manufactured parts based on ultrasonic phased arrays. Background technique [0002] Metal additive manufacturing technology uses a high-energy laser beam to melt metal powder and deposit it directly on the substrate to form a cladding point. The relative movement of the substrate and the laser beam forms a cladding line, and the lapping and fusion between the lines forms a cladding surface. The fusion and stacking of faces form three-dimensional parts. Additive manufacturing technology can directly form arbitrarily complex three-dimensional geometric entities without special fixtures or tools, completely get rid of the limitation of cutting processing, and the forming process takes a short time. It is widely used in aerospace and other fields, and plays an increasingly important role in the field of manufactur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N29/26G01N29/28
CPCG01N29/04G01N29/26G01N29/28
Inventor 何振丰赵宇辉赵吉宾孙长进王志国
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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