レーザー走査形超音波顕微鏡によるセラミックスの弾性定数の測定

概要

論文の詳細を見る
A scanning laser acoustic microscope, SLAM, is applied to measure velocities of sound and to evaluate elastic constants of ceramics. The method to measure sound velocity is based on spectral interferometry utilizing the interference fringes in a sample and in a reference material. In this study, a suitable sample holder is made to excite the ultrasonic wave to the desired mode, i.e., the longitudinal or the transverse mode, within the sample. Young's modulus, shear modulus and Poisson's ratio of partially stabilized zirconia ceramics are evaluated from the measured velocities of sound. Then, tensile testing is performed on the same sample and the elastic constants are measured. The elastic constants measured by SLAM are in agreement with those obtained by the tensile testing within a deviation of about 10%. The method described here is useful for small ceramic materials.
社団法人日本機械学会の論文
1988-12-25