CAJ | 학술논문

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---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。
근거류체중원주고체대초성파적배향산사보여고체탄성삼수적밀절관계，본문제출료재료탄성삼수측량적일충신방법---초성배향산사보법；측량료동합금간화려합금간적초성배향산사보，병반연득도료타문적양씨모량화박송비。화전통적정역학방법상비，초성배향산사법측득적수거교정학，차대피측재료불회조성임하손상。
Based on the relations between the ultrasonic backscattering amlplitudespectrum and elastic constants of a cylindrical solid rod immersed in water,this paper introduces a new method to inversely deduce the elasticparameters by ultrasonic measurements. The ultrasonic backscatteringamplitude spectrums of copper and aluminum rods are measured and theirYoung's modulus and Poisson's ratio are reconstructed. The presentedmethod is nondestructive and more precise and repeatable compared withthe traditional static technique.