Detection of drilling-induced delamination in aeronautical composites by noncontact laser ultrasonic method

被引：6

作者：

Zhou, Zhenggan ^{[1
,2
]}

Sun, Guangkai ^{[1
]}

Chen, Xiucheng ^{[1
]}

Wang, Jie ^{[1
]}

机构：

[1] Beihang Univ, Sch Mech Engn & Automat, Beijing 100191, Peoples R China

[2] Collaborat Innovat Ctr Adv Aeroengine, Beijing 100191, Peoples R China

来源：

APPLIED OPTICS | 2014年 / 53卷 / 12期

关键词：

SYSTEM; WAVES;

D O I：

10.1364/AO.53.002656

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel application of the laser ultrasonic technique for the detection of drilling-induced delamination in composite components of aircrafts is proposed. Numerous key components of aircrafts are made of composite materials, and drilling is often a final operation during assembly. Drilling-induced delamination significantly reduces the structural reliability, and it is rather difficult to be detected effectively and automatically. The laser ultrasonic technique is a promising method to solve the problem. This paper investigates the characterization of drilling-induced delamination in composites by a noncontact laser ultrasonic method. A carbon fiber reinforced plastic laminate with drilling holes is prepared as a specimen. The characterization of drilling-induced delamination with laser-generated ultrasonic waves is investigated theoretically and experimentally, and the morphology features of the delamination are obtained by laser ultrasonic C-scan testing. The results prove that the laser ultrasonic technique is effective for the detection of drilling-induced delamination in composite components, and it is a feasible solution for evaluating the drilling quality during assembly. (C) 2014 Optical Society of America

引用

页码：2656 / 2663

页数：8