金属板中Lamb波波速与应力关系的实验研究  

Experiment on relationship between Lamb wave velocity and static stress in metal plate

作　　者：王军[1] 韩庆邦[2] 

机构地区：[1]重庆第二师范学院数学与信息工程系,重庆400067 [2]河海大学物联网工程学院,常州213022

出　　处：《应用声学》2015年第4期358-363,共6页Journal of Applied Acoustics

基　　金：国家自然科学基金项目(11274091);重庆第二师范学院校级项目

摘　　要：本文给出了金属板中Lamb波波速对同向应力变化率测量的装置,分析探讨了测量原理及误差,并对Lamb波的波速与应力关系进行了实验研究。结果表明Lamb波的波速对应力有较好的线性关系,Lamb波相速度对应力的变化率的实验值与理论值符合很好,可为Lamb波的应力测量提供实验依据。In this paper, measuring device of stress gradient of Lamb wave velocity in the metal plate was designed, and principle of measurement and error were analyzed. Relationship between wave velocity and stress of the Lamb wave was studied experimentally. The results show that the velocity of Lamb wave keeps a good linear relationship with stress, and experimental value of rate of change of the relationship is in agreement with the theoretical prediction. It can provide experimental basis for Lamb wave stress measurement.

关 键 词：静应力 LAMB波 频散方程频 

分 类 号：O422.7[理学—声学]