激光全息干涉技术测量非金属材料泊桑比

Measurements of poisson ratio of nonmetallic materials by laser holographic interferometry

采用离轴型准直平面波相干光装置,使用纯弯曲加载夹具,测定了碳纤维复合材料(0°、90°)、玻璃钢(径向)、定向有机玻璃(X、Y方向)板材的泊桑比值。简述了纯弯条件下板材表面的位移等高线分布规律。确认实时全息方法是一种精确而实用的试验方法。

By means of the off-axis collimated plane wave coherent optical arrangement arid a loading device by pure banding, poisson ratio values of composite plates （CFRP）lay-up 0°,90° and GFRP, radial direction） and PMMA （x, y direcLion） have been measured. A brief description is given on the distributive law of contour lines of a plate deformation by pure bending. It is sure that real time holographic method is a kind of accurate and useful testing method.