摘要
为了在超声波无损检测方案制定过程中和分析检测结果时给予参考,采用有限元计算模拟了表面波的传播过程。根据表面波的激励原理,建立了表面波换能器的有限元模型,按照有限元软件的通用步骤进行加载与求解。提取各类型波的速度数据,分析了表面波在遇到缺陷时产生的波型转换现象,并进行了试验验证。通过对比可知,有限元分析结果与理论、试验结果相符,该数值计算方法正确可靠,对实际应用有一定的参考价值。
In order to give a reference in ultrasonic nondestructive testing program development process and analyze test results,the propagation of surface waves was simulated by using finite element method.According to the principle of surface wave excitation,the finite element model of surface wave transducer was established.And then,using general-purpose finite element software for loading and solving,the speed data of wave was extracted and the situation of wave conversion after surface wave encountered defect was analyzed.At last,the verification experiment was given out.Compared with theoretical data and experiment results,it showed that the method was correct and reliable.
出处
《无损检测》
2014年第10期44-48,共5页
Nondestructive Testing
基金
山东省自主创新成果转化重大专项资助项目(200710130)
关键词
无损检测
表面缺陷检测
有限元
表面波
Nondestructive testing(NDT)
Surface defect detect
Finite element analysis
Surface wave
