多层复合材料黏接缺陷的声阻法检测  

Bonding defect detection of multilayer composites by acoustic resistance method

作　　者：邓金涌 沈柿强 苗文崧 朱颖[1,2] 卢超 李沛芮[3] DENG Jinyong;SHEN Shiqiang;MIAO Wensong;ZHU Ying;LU Chao;LI Peirui(Key Laboratory of Nondestructive Testing Technology of Ministry of Education,Nanchang Hangkong University,Nanchang 330063,China;State Key Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;Jiangxi Hongdu Aviation Industry Co.,Ltd.,Nanchang 330024,China)

机构地区：[1]南昌航空大学无损检测技术教育部重点实验室,南昌330063 [2]中国科学院声学研究所声场声信息国家重点实验室,北京100190 [3]江西洪都航空工业股份有限公司,南昌330024

出　　处：《无损检测》2024年第5期28-33,共6页Nondestructive Testing

摘　　要：用于直升机桨叶的新型多层复合材料以不锈钢、橡胶、加热组件和玻纤黏接而成,因其结构复杂且工作环境恶劣,亟需进行严格的质量控制。常规超声检测信号混叠现象严重,无法检出橡胶与玻纤黏接层缺陷。在分析复合材料机械阻抗的基础上,搭建了基于声阻法检测该复合材料的模型,并推导出两个用以表征黏接缺陷信息的参量。试验结果表明,使用机械阻抗的相位与幅值能较好地表征材料缺陷的深度与大小信息,声阻法检测复材黏接缺陷具有较高的可靠性和缺陷检出率。A new multilayer composite material made of stainless steel,rubber,heating components and glass fiber bonded for helicopter blades requires strict quality control due to its complex structure and harsh working environment.The signal aliasing phenomenon of conventional ultrasonic detection is serious and the defects of rubber and glass fiber bonding layer cannot be detected.In this paper,based on the analysis of the mechanical impedance of the composite material,a model based on the acoustic resistance method was established to detect the composite material,and two parameters were derived to characterize the bonding defect information.Experiments showed that the phase and amplitude of mechanical impedance can be used to characterize the depth and size of material defects.The acoustic resistance method had high reliability and high defect detection rate.

关 键 词：多层复合材料 黏接缺陷 超声检测 声阻法 

分 类 号：TG115.28[金属学及工艺—物理冶金]