黏接复合结构损伤的非线性超声评价研究进展  

Progress on nonlinear ultrasonic evaluation of damages within the adhesively bonded composites

作　　者：李晓阳 税国双[1] 汪越胜[1,2] Xiaoyang Li;Guoshuang Shui;Yue-Sheng Wang(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;School of Mechanical Engineering,Tianjin University,Tianjin 300350,China)

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]天津大学机械工程学院,天津300350

出　　处：《科学通报》2022年第7期610-620,共11页Chinese Science Bulletin

基　　金：国家自然科学基金(11172034,11472039,11772040)资助。

摘　　要：黏接复合结构具有重量轻、应力分布均匀等优点,广泛应用于航空航天、船舶以及汽车工业中.黏接界面是黏接复合结构的重要构成要素,在很大程度上决定着该复合结构的总体力学性能,因此对其损伤的检测与评价研究一直是大家关注的热点问题.对于空间尺寸远小于超声波波长的材料微观结构特征变化,非线性超声检测技术具有更高的表征灵敏度.近年来,非线性超声检测技术得到了相关领域的广泛关注,一系列研究成果不断涌现.本文综述了近年来利用非线性超声对黏接复合结构及其界面损伤进行无损评价的研究进展,主要包括基于透射体波、导波和混频波的结构界面早期性能退化、微观损伤的超声检测与评价研究成果,并对今后进一步的研究进行了展望.Adhesively bonded composite structures are widely used in aerospace,shipbuilding and automotive industries because of such advantages as lower structural weight and more uniformly distributed stresses.As an important component of the adhesive joints,properties of the adhesive interface determine the integrity of the whole adhesive structure,making the research on damage detection and evaluation of the adhesive interface an extensively concerned topic in the related fields.The ultrasonic nondestructive testing technique,which has a long history of development since its appearance,is an effective technology for testing,evaluating and characterizing material properties and damages.Because of the advantage of realizing the detection without causing additional destruction to the structure and materials,the ultrasonic nondestructive testing has been widely used in engineering practice.However,the existing traditional ultrasonic nondestructive testing technology mainly concerns the initiation and accumulation of material damages,final failure of the structure on service.It is difficult in characterizing the bonding strength,bonding force,early degradation and micro-damage of the bonding surface directly and quantitatively,which is not capable of realizing the structural health monitoring and life prediction of the adhesive joints.It is promising that the nonlinear ultrasonic technology developed in recent years can effectively solve the problems mentioned above.When nonlinear waves are employed,this technique has higher sensitivity in characterizing the change of micro-structure of materials and micro-damages,whose spatial dimension is much smaller than the wavelength of ultrasonic waves.Considering these advantages,nondestructive testing and evaluation employing nonlinear waves have been widely investigated in recent years;a series of new methods have appeared and many important achievements have been obtained.Detection and evaluation of damages within bonded composite structures and adhesively jointed interfaces are m

关 键 词：非线性超声波 无损检测 黏接复合结构 导波 混频 

分 类 号：TB553[理学—物理]