中文摘要：

对用超声的指导波浪(GW ) 的折断的长骨头的评价获得了可观的注意。这份报纸集中于使用混合边界元素方法(HBEM ) 在折断的长 bones.The 思考系数(RC ) 和传播系数(TC ) 分析超声的 GW 的繁殖特征因为不同 depth-to-width 比率(d/w ) 裂缝数字地计算、分析。主要产量模式，包括传播和思考模式，与发生模式一样，这被显示出。为一些裂缝，不同 TC 曲线总是在邻近的频率得到了本地最大值。为不同 d/w 裂缝，大多数 TC 曲线有没被重叠的本地最大值。这些模拟结果是有用的为评估骨头质量并且在长外皮的骨头提供裂缝的数字结果的份量上优化发生 GW 的模式和频率。

英文摘要：

Assessment of fractured long bone using ultrasonic guided wave（GW） has gained considerable attention.This paper focuses on using the hybrid boundary element method （HBEM） to analyze the propagation characteristics of ultrasonic GW in fractured long bones. The reflection coefficients（RC） and transmission coefficients（TC） for different depth-to-width ratio（d/w） cracks were numerically calculated and analyzed.It has been shown that the primary output modes,which include the transmission and reflection modes,are the same as the incidence modes.For some cracks,different TC curves always got the local maxima in adjacent frequencies.For different d/w cracks,most of the TC curves had local maxima which are not overlapped.These simulation results are helpful to optimize the modes and frequencies of the incidence GWs for quantitatively evaluating the bone quality and providing the numeral results of the cracks in long cortical bones.