摘要
通过理论分析及数值计算研究空心圆柱体中周向导波的传播及频散特性,确定影响空心圆柱体中周向导波传播与频散的几何形状因素;对比不同形状空心圆柱体同相应板的导波频散特性,找出其中的关系;其结果是:在低频段,利用第2个周向导波模态作为薄壁空心圆柱体纵向缺陷无损检测较适合。
The multi-modes and disperse characteristics of guided circumferential waves in hollow cylinders is investigated by theoretical analysis and numerical computation. The geometrical factor that can affect the guided circumferential waves is confirmed. The relationship of guided waves between different hollow cylinders and relevant plate is found. Finally, the results indicate that some given guided circumferential waves are fit for non-destructive testing(NDT) of longitudinal cracks in hollow cylinders.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2004年第8期7-12,共6页
Journal of Mechanical Engineering
基金
国家自然科学基金(10272007
19972003)
北京市自然科学基金重点(3011001)资助项目
北京市教委科技发展项目
