文章摘要
刘胜兴,王铁海,王耀俊.用超声背向散射谱定征柱状固体的弹性常数[J].,2000,19(1):4-7
用超声背向散射谱定征柱状固体的弹性常数
Determination of elastic constants of cylindrical solids using backscattering amplitude spectrum
  
中文摘要:
      根据流体中圆柱固体对超声波的背向散射谱与固体弹性参数的密切关系,本文提出了材料弹性参数测量的一种新方法一超声背向散射谱法; 测量了铜合金杆和铝合金杆的超声背向散射谱,并反演得到了它们的杨氏模量和泊松比。和传统的静力学方法相比,超声背向散射法测得的数据较精确,且对被测材料不会造成任何损伤.
英文摘要:
      Based on the relations between the ultrasonic backscattering amlplitude spectrum and elastic constants of a cylindrical solid rod immersed in water, this paper introduces a new method to inversely deduce the elastic parameters by ultrasonic em- surmounts. The ultrasonic backscattering amplitude spectrums of copper and aluminum rods are measured and their Young’s modulus and Poisson’s ratio are reconstructed. The presented method is nondestructive and more precise and repeatable compared with the traditional static technique.
DOI:10.11684/j.issn.1000-310X.2000.01.002
中文关键词: 超声背向散射  振幅谱  弹性参数反演
英文关键词: Ultrasonic backscattering  Amplitude spectrum  Elastic constants recon- struction
基金项目:江苏省自然科学基金;国家自然科学基金
作者单位
刘胜兴 南京大学近代声学国家重点实验室!南京210093 
王铁海 南京大学近代声学国家重点实验室!南京210093 
王耀俊 南京大学近代声学国家重点实验室!南京210093 
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