复合材料分层缺陷的激光超声检测
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摘要
复合材料的结构健康状况将直接影响航空航天飞行器的飞行安全,其中的制造缺陷会对材料的特性造成影响,因此需要对复合材料的内部结构进行无损检测。基于激光超声技术研究了复合材料分层缺陷的无损检测方法,应用构建好的激光超声检测系统,对复合材料的厚度及内部分层缺陷进行检测,对缺陷的深度进行定位,并基于三次样条插值算法对复合材料的分层缺陷进行重构。研究结果表明:该技术具有较高的空间分辨率、测量精度及重构效果。
Spacecraft safety is tightly related with structural health status of composite materials.And manufacturing defects have an important influence on the properties of composite materials.It is urgent to study nondestructive testing techniques in the internal structure of composite materials.In this paper,laser ultrasonic technology is provided to test delamination defects in the composite materials.A laser ultrasonic testing system is constructed to detect thickness and delamination defects of composite materials.Finally,depth of defects is located,and the delamination defects of composite materials is reconstructed by the cubic spline interpolation algorithm.The results show that laser ultrasonic testing has advantages of high spatial resolution,measurement accuracy and realtime.
Spacecraft safety is tightly related with structural health status of composite materials.And manufacturing defects have an important influence on the properties of composite materials.It is urgent to study nondestructive testing techniques in the internal structure of composite materials.In this paper,laser ultrasonic technology is provided to test delamination defects in the composite materials.A laser ultrasonic testing system is constructed to detect thickness and delamination defects of composite materials.Finally,depth of defects is located,and the delamination defects of composite materials is reconstructed by the cubic spline interpolation algorithm.The results show that laser ultrasonic testing has advantages of high spatial resolution,measurement accuracy and realtime.
引文
[1]邹军锋,李文静,刘斌,等.飞行器用热防护材料发展趋势[J].宇航材料工艺,2015,45(4):10-15.
[2]方奔,战宇,陈春明.激光超声实验系统及其应用[J].科技资讯,2018,16(3):106-107,109.
[3]TANAKA T,IZAWA Y.Nondestructive detection of small internal defects in carbon steel by laser ultrasonics[J].Review of Laser Engineering,2001,30(3):140-145.
[4]BLOUIN A,MONCHALIN J,PERTON M.Adhesive bond strength evaluation in composite materials by laser-generated high amplitude ultrasound[J].2011,278(1):012044.
[5]FOMITCHOV P A,KIM Y K,KROMINE A K,et al.Laser ultrasonic array system for real-time cure monitoring of polymer-matrix composites[J].Journal of Composite Materials,2002,36(15):1889-1901.
[6]李远林.基于反射横波的金属材料内部缺陷激光超声检测研究[D].南京:南京理工大学,2014.
[7]孙广开,周正干,陈曦.激光超声技术在先进复合材料无损检测中的应用研究[J].失效分析与预防,2016,11(5):276-282.
[8]杜丽婷,刘松平.激光超声检测技术[J].无损探伤,2011,35(5):1-4.
[9]ARIAS I,ACHENBACH J D.A model for the ultrasonic detection of surface-breaking cracks by the scanning laser source technique[J].Wave Motion,2004,39(1):61-75.
[10]BURROWS S E,DIXON S,PICKERING S G,et al.Thermographic detection of surface breaking defects using a scanning laser source[J].Ndt&EInternational,2011,44(7):589-596.
[2]方奔,战宇,陈春明.激光超声实验系统及其应用[J].科技资讯,2018,16(3):106-107,109.
[3]TANAKA T,IZAWA Y.Nondestructive detection of small internal defects in carbon steel by laser ultrasonics[J].Review of Laser Engineering,2001,30(3):140-145.
[4]BLOUIN A,MONCHALIN J,PERTON M.Adhesive bond strength evaluation in composite materials by laser-generated high amplitude ultrasound[J].2011,278(1):012044.
[5]FOMITCHOV P A,KIM Y K,KROMINE A K,et al.Laser ultrasonic array system for real-time cure monitoring of polymer-matrix composites[J].Journal of Composite Materials,2002,36(15):1889-1901.
[6]李远林.基于反射横波的金属材料内部缺陷激光超声检测研究[D].南京:南京理工大学,2014.
[7]孙广开,周正干,陈曦.激光超声技术在先进复合材料无损检测中的应用研究[J].失效分析与预防,2016,11(5):276-282.
[8]杜丽婷,刘松平.激光超声检测技术[J].无损探伤,2011,35(5):1-4.
[9]ARIAS I,ACHENBACH J D.A model for the ultrasonic detection of surface-breaking cracks by the scanning laser source technique[J].Wave Motion,2004,39(1):61-75.
[10]BURROWS S E,DIXON S,PICKERING S G,et al.Thermographic detection of surface breaking defects using a scanning laser source[J].Ndt&EInternational,2011,44(7):589-596.