Ultrasonic Nondestructive Testing and Evaluation of CFRP Hole-making Structures

被引：0
|
作者：
Yang L. [1 ]
Cai G. [1 ]
Liu F. [1 ]
Li J. [1 ]
机构：
[1] Institute of Metal Research, Chinese Academy of Sciences, Shenyang
来源：
Zhongguo Jixie Gongcheng/China Mechanical Engineering | 2023年 / 34卷 / 19期
关键词：
carbon fiber reinforced plastics(CFRP); evaluation factor model; hole-making structure; spiral scan; ultrasonic detection;
D O I：
10.3969/j.issn.1004-132X.2023.19.007
中图分类号：
学科分类号：
摘要：
In order to realize the nondestructive testing and evaluation of the hole-making structure of CFRP, a portable ultrasonic C-scan tester was developed based on the principle of ultrasonic pulse reflection method, a spiral scanning method was proposed, and a mathematical model for the quality evaluation of the hole-making structures was established. By performing ultrosonic inspection tests on artificial specimens and in-service pores, based on the static distance principle, the centroid of the irregular ultrasonic C-scan image was determined. The longest axis of the centroid was extracted, and the ratio of the longest axis to the nominal diameter of the hole(RLN) was calculated to evaluate the quality of the holes. The results show that the method may greatly improve the detection speed. The measured values of stratified defect are equivalent to the actual ones. The results are consistent with the actual morphologies of in-service pores. The RLN factor may accurately evaluate various types of stratification defects. © 2023 China Mechanical Engineering Magazine Office. All rights reserved.
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页码：2327 / 2332
页数：5
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