摘要
用超声脉冲回波重合方法测量了立方晶体Bi12 GeO2 0 中九种不同模式纯纵波和切变波自然声速值随流体静压力和单轴压力的变化关系 ,由此实验结果 ,用Thurston和Brugger的理论 ,确定了Bi12 GeO2 0 晶体全部独立的三阶弹性常数 .
By using of the ultrasonic pulse-echo overlap technique, the dependence of natural wave velocity on the hydrostatic pressure and uniaxial stress in cubic crystal Bi 12 GeO 20 was measured for various longitudinal and shear elastic modes. From the experimental results, the values of all independent second- and third-order elastic stiffness constants of Bi 12 GeO 20 crystal were determined by means of the theory proposed by Thurston and Brugger.
基金
TheprojectsupportedbyNSFC(195 740 43)andbyKeyStateLab .ofModernAcousticsofNanjingUniversity
