摘要
对金属薄板兰姆波探伤中的一些问题进行了探讨，提出了能量沿板厚分布的计算公式。指出不能将质点位移振幅沿板厚的分布当作能量分布，不能将能量分布是否均匀作为选择最佳探伤参数的主要依据。还对薄板中兰姆波的产生、兰姆波与分层作用的机理及如何选择最佳探伤参数等问题提出了初步的看法。
Some questions about Lamb waves in nondestructive testing of thin metal sheet were discussed in this paper. The calculation formula of energy distribution along thickness of sheet was advanced.It was shown that amplitude distribution of particle displacement could not be taken as the energy distribution and the uniformity of the energy distribution could not be used as principal criterion for optimum detection paramater. Furthermore,the generation of Lamb waves,the mechanism of the interaction between delamination and Lamb waves,the method of choosing optimum detection parameter were given primarily.
出处
《材料工程》
EI
CAS
CSCD
北大核心
1996年第10期29-31,共3页
Journal of Materials Engineering
关键词
薄板
兰姆波
无损检测
s:sheet, Lamb waves, nondestructive testing
