【摘要】 对弹性波在非均匀介质中传播时的波幅进行了研究.利用积分变换,用解析方法求解了一维非均匀区域的不同性质对弹性波传播时波幅变化的影响;将非均匀区域离散成均匀的薄层,结合相邻层的连续条件,建立了数值解法的波幅传递矩阵.通过实例计算,将数值解结果与解析解结果进行比较,数值解结果具有较高精度,为工程实际中的无损检测提供了理论和计算分析依据.更多还原

【Abstract】 Elastic wave transmission in a continuous inhomogeneous media is studied.Based on integral transformation,analytical solution for the wave transmission equations in 1-D inhomogeneous media is derived.By dividing the media into layers and considering the continuous conditions between the(interfaces,) the transfer matrix of amplitude of waves is obtained.Compared with the analytical(results,) the numerical results have attained a high precision.The study provides a basis for a theoretical and numerical analysis on defectoscopy.更多还原