OS1301 赤外線サーモグラフィを用いた振動モードの同定(非破壊評価と構造モニタリング,オーガナイズドセッション)

概要

論文の詳細を見る
The applicability of the thermoelastic stress analysis (TSA) using infrared thermography to experimental modal analysis of structures is examined in this paper. Recent development of infrared thermography has made it possible to obtain a movie of stress distribution at a rate of several hundred frames per second. Therefore, it is expected to be much easier than before to obtain mode shapes of structures in a graphical form. In addition, stress concentration under vibration condition could be detected at the same time, which could not be accomplished by usual method of experimental modal analysis using accelerometers. A cantilever beam with four branches is tested. The eigen frequencies and mode shapes obtained experimentally by TSA matched well with those obtained by fmite element analysis.
一般社団法人日本機械学会の論文
2009-07-24