激光技术Issue(2)：260-265,6.DOI:10.7510/jgjs.issn.1001-3806.2014.02.024
铝材管道管壁厚度对激光超声信号影响的探究
Effect of wall thickness of aluminum pipes on laser-induced ultrasonic waves
王贵鑫 1严刚 1关建飞1
作者信息
- 1. 南京邮电大学光电工程学院，南京210023
- 折叠
摘要
Abstract
In order to explore effect of wall thickness on the generation and detection of ultrasound signal , several idealized eccentric pipe models were established based on the finite element method .Effect of different uniform wall-thickness and thickness change at the excitation source , detection point and the propagation path on ultrasonic signal was analyzed.The simulation results show that: when the wall is thinner , the Rayleigh waves cannot be detected; the wall thickness on the propagation path becomes small to some extent , the filtering effect will be so obvious that the high-frequency component is filtered out , but will resume within a certain extent in the pipes with thicker wall .This work will provide a useful guidance for the further application of laser ultrasonic in cylinder nondestructive testing field .关键词
激光技术/激光超声/有限元法/无损检测Key words
laser technique/laser ultrasonic/finite element method/nondestructive testing分类
信息技术与安全科学引用本文复制引用
王贵鑫,严刚,关建飞..铝材管道管壁厚度对激光超声信号影响的探究[J].激光技术,2014,(2):260-265,6.
