针对风电叶片玻璃纤维层合板的力学性能进行试验研究,确定其主要力学性能参数,分析各种铺层、测试方向及配方因素对玻璃纤维层合板力学性能的影响。依据BS EN ISO测试标准,应用微机控制万能试验机、应变仪对风电叶片玻璃纤维层合板进行拉伸、压缩及剪切破坏试验,得到试件的拉伸、压缩、剪切强度及弹性模量、泊松比等力学性能,并对四种不同配方玻璃纤维层合板的力学性能及其在不同加载方式下的破坏形态进行了比较与分析。结果表明,纤维层合板各向异性特征十分明显,沿纤维方向强度高;配方对层合板的力学性能有一定影响;其破坏形式与铺层方式和测试角度关系密切,而与其配方基本无关。
The experimental investigation on mechanical properties of the glass fiber laminates was carried out.The major parameters of mechanical properties were obtained,and the influence of the fiber direction in the fabric,the testing direction and the prescription factors on the mechanical properties was analyzed.According to the BS EN ISO standard,tensile,compression and shear destructive experiments on the glass fiber laminates were executed by using the PC controlling testing machine and the strain instrument.The mechanical properties of the laminates,such as tensile,compressive,shear strength,elasticity modulus and Poisson＇s ratio,were gained.The mechanical properties of the laminates in different prescriptions and the failure modes in different loading styles were compared and analyzed.The results show that the glass fiber laminates have obvious anisotropy and the high strength appears in the fiber direction;the prescription exerts a certain influence on the mechanical properties;the failure modes are in close relations with the fiber direction and the testing direction,but basically have nothing to do with the prescription.
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