摘要
兰姆波频散曲线是进行兰姆波超声检测的重要参考和依据。对瑞利-兰姆方程进行了分析,给出了无限大板中兰姆波频散曲线的数值计算方法,并采用这一方法绘制了铝板中兰姆波的相速度和群速度曲线。对推广应用兰姆波无损检测有实际意义。
Dispersion curves are of great importance to Lamb wave ultrasonic testing. Rayleigh-Lamb equation was analyzed and a numerical calculation method for Lamb wave dispersion curves of an infinite plate was presented, by which the phase velocity curves and group velocity curves of Lamb waves in aluminium plate were plotted respectively. It is of significance for the use of Lamb waves in nondestructive testing.
出处
《无损检测》
2003年第2期66-68,共3页
Nondestructive Testing
基金
国家自然科学基金(50075004)
关键词
兰姆波频散曲线
超声检验
铝板
数值计算
Ultrasonic testing
Aluminium plate
Numerical calculation
Curve plotting
