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利用激光冲击波检测碳纤维材料中的粘接质量

Bonding Quality Detection of Composite Structure by Laser Shock Wave

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摘要

碳纤维增强复合材料(CFRP)由于具有出色的力学性能而越来越多地受到关注,但是由于对这种材料粘接结构缺乏有效的无损检测方法而导致其应用受到了局限。发展了一种基于激光冲击波的碳纤维增强复合材料粘接质量无损检测方法。对于一个碳纤维增强复合材料粘接结构,当激光作用在样品表面时,会产生一个冲击波在其中传播,冲击波到达样品后表面时会反射一个稀疏波,并在材料内部形成拉伸。在适当的激光强度下,好的粘接质量将不会受影响;而差的粘接质量将会造成损伤。实验过程中,对样品自由面的速度历史进行了测量,该信号可以反映粘接层的内部损伤情况。这一结论也通过对回收样品的激光超声检测得到了证实。这项技术的发展将使未来碳纤维增强复合材料粘接结构的在线检测成为可能。

Abstract

The carbon fiber reinforced polymer (CFRP) is more and more attractive because of its excellent mechanical performances, while the application of CFRP is limited because the non-destructive evaluation method is still not well done. A method based on shock waves produced by a pulsed laser is applied to the evaluation of bond quality of CFRP plates joined by an adhesive layer. A laser shock wave can cause a tension when it propagates through the adhesive/plate interface. A good bond will be unaffected by a certain level of shock wave stress whereas a weaker one will be damaged. In the experiments, the sample surface velocities are optically measured with an interferometer. The signals give a signature of well-bond or bad ones, and are used to obtain an estimate of the bond strength. Results show that the proposed test is able to differentiate bond quality. Laser-ultrasonic measurements made on shocked samples also confirm that weak bonds are revealed by the laser shock wave. The development of this technique will probably make the on line evaluation of CFRP structure possible in the future.

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中图分类号:TN249;TG115.28

DOI:10.3788/cjl201138.0308002

所属栏目:测量与计量

基金项目:中国留学基金委(CSC)资助课题。

收稿日期:2010-05-24

修改稿日期:2010-11-01

网络出版日期:0001-01-01

作者单位    点击查看

谷卓伟:加拿大国立研究院工业材料所,75 de Mortagne blvd, Boucherville, Quebec, Canada, J4B 6Y4中国工程物理研究院流体物理研究所, 四川 绵阳 621900
Mathieu Perton:加拿大国立研究院工业材料所,75 de Mortagne blvd, Boucherville, Quebec, Canada, J4B 6Y4
Silvio E. Kruger:加拿大国立研究院工业材料所,75 de Mortagne blvd, Boucherville, Quebec, Canada, J4B 6Y4
Martin Lord:加拿大国立研究院工业材料所,75 de Mortagne blvd, Boucherville, Quebec, Canada, J4B 6Y4
Alain Blouin:加拿大国立研究院工业材料所,75 de Mortagne blvd, Boucherville, Quebec, Canada, J4B 6Y4
Jean-Pierre Monchalin:加拿大国立研究院工业材料所,75 de Mortagne blvd, Boucherville, Quebec, Canada, J4B 6Y4

联系人作者:谷卓伟(guzhw@yahoo.com.cn)

备注:谷卓伟(1969—),男,博士,研究员,主要从事脉冲激光力学行为及材料高压物性等方面的研究。

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引用该论文

Gu Zhuowei,Mathieu Perton,Silvio E. Kruger,Martin Lord,Alain Blouin,Jean-Pierre Monchalin. Bonding Quality Detection of Composite Structure by Laser Shock Wave[J]. Chinese Journal of Lasers, 2011, 38(3): 0308002

谷卓伟,Mathieu Perton,Silvio E. Kruger,Martin Lord,Alain Blouin,Jean-Pierre Monchalin. 利用激光冲击波检测碳纤维材料中的粘接质量[J]. 中国激光, 2011, 38(3): 0308002

被引情况

【1】董利明,李加,倪辰荫,沈中华,倪晓武,陈建平,N. Chigarev,V. Tournat,V. Gusev. 基于光热调制检测发动机叶片疲劳裂纹的激光声表面波方法. 中国激光, 2011, 38(11): 1103001--1

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