全息干涉法对温度场下物体振动的研究

A Study on the Vibration of Objects in the Temperature Field Using Holographic Interferometry

本文用激光全息的时间平均法研究了悬臂矩形平板在线性稳定温度场下的振动,得到了悬臂矩形平板在不同温度场下的振动固有频率和振型。实验表明,温度不仅影响物体振动的固有频率,而且也影响物体的振型。

This artical researches into the vibration of a cantilever rectangular platein the linearly distributed stable-temperature fields -with the time-average holography. Its natural freguencies and models of the vibration are obtained in different and linearly distributed stable-temperature fields. The experimental results show that when an object is vibrating in the stable-temperature field, not only the natural freguencies but also the models of vibration will be changed as compared wih that in normal temperature.