散斑法测量膨胀系数与温度的关系

Method of speckle Measurement in Relationship between Dilatation and Temperature

用He-Ne激光散斑照相测量了位移场,通过正交多项式和待定系数法解微分方程,得到了膨胀系数与温度的关系。

The displacement field is mesaured by using He-Ne laser speckle photography. The differential equa- tion is solved by mormal mrltinomial and power scrics.And the relation ship between diatation and temperature is ob- tained.