ディジタルホログラフィによるホログラフィ振動解析

概要

論文の詳細を見る
The optical holographic interferometry to be used for analyzing vibrating modes of objects is described to reveal the information of vibrations recorded in the holograms.The fringe patterns obscrved in the images reconstructed from holograms depend on not only the vibration modes but also the shutter funcdon representing the exposure at the stage of recording the holograms.Such an optical technique is applied to the digital holography by the computer,and the simulation study on the vibration analys is executed.the computer simulatiens with MATLAB are executed with respcct to the time-average and the pulse-stroboscopic methods of holographic interferometry.The fringe patterns are analyzed by using histogram ofintensity,and,in the pulsestroboscopic method,it is revealed that the maxmum amplitude of vibration can be detected asthe maximum point of the fringe contrast when the phase difference between the vibrating object and the illumination pulses is changed.
2009-02-20