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本文通过对三维编织 T30 0 /QY95 1 2复合材料纵向和横向的拉伸和压缩试验 ,研究了三维编织复合材料的刚度和强度特性 .通过试验发现纵向拉压以及横向拉压应力应变曲线几乎为直线 ,具有脆性破坏的特点 ;三维编织 T30 0 /QY95 1 2复合材料纵向拉压强度与横向拉压强度均不同 ,这主要是因为其破坏模式不同的缘故 ;另外 ,声发射数据表明了纵向拉伸试验中试件损伤的发展和破坏与声发射的敲击计数和能量相关 .
In this paper, the three-dimensional braided T30 0 / QY95 1 2 composite longitudinal and transverse tensile and compression tests to study the three-dimensional braided composite stiffness and strength characteristics of the test found that longitudinal tensile and transverse tensile stress and strain curves are almost Linear, with brittle failure characteristics; T30 0 / QY95 1 2 composite three-dimensional tensile strength and transverse tensile strength are different, mainly due to the different failure modes; In addition, the acoustic emission data show the longitudinal pull Tensile test specimen damage development and damage and acoustic emission percussion count and energy related.