碳纤维复合材料的应变测量试验方法研究

碳纤维复合材料目前被广泛用于制造航空航天设备以及轻量化武器装备的承力结构件，它的力学性能测量试验研究具有重要的意义。本文利用万能材料试验机对碳纤维复合材料进行拉伸试验，通过在材料的同一位置粘贴电阻应变片，结合光纤光栅传感器和喷涂散斑高速摄像的方法对其进行了应变测量可行性验证。常温下，万能材料试验机以一定的加载速度加载，在不同拉力处获得了应变试验数据。结果表明材料在拉伸和卸载过程应变分别呈现线性上升和线性下降趋势，三种试验方法获得的实验结果具有较好的一致性，利用该方法，尝试了碳纤维复合材料的受热应变测试。

Testing Research on Strain Properties of Carbon Fiber Composite Material

The carbon fiber composite material is widely used in the manufacture of aerospace equipment, and bearing structure of light weapons. Studying the strain measurement, which is significant in it. Tension tests of an carbon fiber composite material with an oblique crack before and after crack arrest were done by using a PC-control universal tester.Through paste in resistance strain gauges, fiber grating sensors, spraying speckle in the same position of the carbon fiber composite material. Tension tests of samples with an contributes speed were done by using a PC-control universal tester.The results showed that the strain curves are changing in a linear. It shows that the two experimental results tare in good agreement. It also try to study the thermal strain test of carbon fiber composites.