复合材料层合板拉压和面内剪切性能的分散性实验研究

针对纤维增强T300/QY8911复合材料层合板进行大子样纵向拉伸、压缩实验和面内剪切实验,得到了材料拉伸、压缩、面内剪切的主要力学性能参数.研究纤维增强复合材料的刚度和强度特性,发现纵向拉压以及面内剪切应力-应变曲线都几乎为直线,具有脆性破坏的特点.并且利用统计学原理对实验结果进行统计分析,研究各力学性能参数的分布特性,结果表明:三参数威布尔分布、正态分布、对数正态分布能较好地描述各力学性能参数的分布规律,最后给出复合材料层合板拉、压、剪切性能的分散性参数.

Study of Experimental Investigation of Tensile Compress and In-plane Shear Properties Dispersibility of Composite Laminate

For fiber reinforced T300/QY8911 composite laminate,the tensile,compress and in-plane shear experiments were carried out to get main mechanical characters.The strength and rigidity characters of the fiber reinforced composites are studied and found that the stress-strain relations of tension compression and shear are almost linear,specimen's failure is abrupt.The distribution properties of the mechanical characters are also studied with the method of statistical analysis.The result of the statistical analys...