复合材料层压板分层缺陷相控阵超声检测参数优化方法  

Parameter optimization method fordelamination defects detection ofcomposite laminate using phasedarray ultrasonic

作　　者：曹弘毅 姜明顺[1] 马蒙源 张法业[1] 张雷[1] 隋青美[1] 贾磊[1] CAO Hong-yi;JIANG Ming-shun;MA Meng-yuan;ZHANG Fa-ye;ZHANG Lei;SUI Qing-mei;JIA Lei(School of Control Science and Engineering,ShandongUniversity,Jinan 250061,China)

机构地区：[1]山东大学控制科学与工程学院,济南250061

出　　处：《材料工程》2020年第9期158-165,共8页Journal of Materials Engineering

基　　金：国家重点研发计划(2018YFE02013);国家自然科学基金(61873333);山东省自然科学基金(ZR2017PEE023,ZR2017BF07);山东省2017重点研发计划(2019TSLH0301,2019GHZ004);山东大学基础研究基金(2018JCG06);山东大学青年学者未来计划(2016WLJH30)。

摘　　要：针对复合材料层压板分层缺陷的准确识别问题,通过仿真与实验提出相控阵超声检测激活孔径优化方法,研究并分析不同聚焦深度下激活孔径对声场特性和检测效果的影响。首先,针对相控阵超声接触式检测方法,推导出固固界面下的多点源三维声场模型;然后,对相控阵超声声场进行仿真,研究不同激活孔径下的声场特性;最后,采用热压工艺制备含分层缺陷的碳纤维增强树脂基复合材料(CFRP)层压板,并搭建相控阵超声检测系统对其进行检测。实验结果表明,通过对相控阵超声激活孔径进行优化选择,能够实现CFRP层压板分层缺陷的准确识别,有效提高缺陷检测精度。Aiming at the problem of accurate identification of delamination defects of composite laminates,an optimization method of activation aperture of phased array ultrasonic testing was proposed by simulation and experiment,and the effects of the activation aperture on the acoustic field characteristics and detection results at different focusing depths were studied and analyzed.Firstly,for the phase array ultrasonic contact testing method,the multipoint source 3D acoustic field model under the solid-solid interface was deduced.Then,the phase array ultrasonic sound field was simulated,and the characteristics of sound field under different activation apertures were analyzed.Finally,the carbon fiber reinforced polymer(CFRP)laminate with delamination defects was prepared using autoclave process,and a phased array ultrasonic testing system was built to test the CFRP laminate test block.The experimental results show that the accurate identification of CFRP lamination defects can be achieved by optimizing the activation aperture of phased array ultrasound,and the defect detection accuracy can be improved effectively.

关 键 词：复合材料 相控阵超声 激活孔径 分层缺陷 

分 类 号：TB553[理学—物理]