摘要
本文介绍了超声无损检测特征参数分析在胶接结构中的应用。首先分析了胶接结构缺陷类型及其产生原因,然后讨论反映胶接结构质量的超声反射信号特征参数(时域参数、频域参数、传递函数参数)的提取,应用特征参数分析和模式识别技术判断缺陷类型和预测胶接强度,最后,介绍应用超声特征参数分析预测胶接强度的应用实例。
The application of feature analysis of ultrasonic nondestructive testing(UNDT)of adhesive bond structures(ABS)is presented in this paper. Frist, the defects types of ABS and the reasons are analysed. Then, the features of ultrasonic signal in time domain, frequency domain and transfer function domain, which relate to the quality of ABS, are discussed. Features analysis and pattern recognition are applied to classfy the defects type and to estimate the bond strength. Finally, aexample of feature analysis of UNDT to estimate the bond strength is presented in this paper.
出处
《航空材料学报》
EI
CAS
CSCD
1990年第2期38-43,共6页
Journal of Aeronautical Materials
