横波の位相スペクトルを用いる音弾性応力測定

概要

論文の詳細を見る
In this study, analysis of phase spectra of ultrasonic transverse waves is shown to be a reliable new method of acoustoelastic stress measurement. At first, phase spectra of birefringenced transverse waves were theoretically analyzed, and the difference in phase spectra corresponding to two mutually orthogonal transducer directions was introduced. Then, a method of curve fitting to this difference was used in order to determine the polarization directions and velocity difference of transverse waves. From this, it was confirmed that no particular transducer directions were required for this determination. Finally, this method was applied to stress analysis of a V-notched specimen subjected to four point bending, and the normal stress difference and shear stress were determined along several lines of the specimen.
社団法人日本機械学会の論文
1997-08-25