测试定向有机玻璃层间剪切强度的影响因素分析

Analysis of Test Factors Affecting Laminar Shearing Strength of Stretched Acrylic

分析了试验速率、试样厚度、取样方向等测试因素对定向有机玻璃层间剪切强度的影响。结果表明,剪切速度越高,剪切强度越大,剪切速度为1～5mm/min时,试样为纯剪切破断,试验过程平稳、易控制;试样越薄,剪切状态越好,试样厚度超过10mm时应从一侧铣至10mm;在双轴拉伸的定向有机玻璃上取样,取样方向不影响试样的层间剪切状态。

The effect of the test speed,the sample thickness and the sampling direction on the laminar shearing strength of the stretched acrylic were investigated.The result shows that,the higher the test speed,the greater the shear strength.At the speed of 1～5mm/min,the sample can be pure laminar sheared with a smooth testing process.The thinner sample can be sheared successfully.When the thickness is above 10mm,the sample must be milled to 10mm from one side.For two axis stretched acrylic,the sampling direction has no effect on the laminar shearing strength of the stretched acrylic.