不同针刺工艺的针刺复合材料面内拉伸强度分析
戚云超, 方国东, 周振功, 梁军

In-plane Tensile Strength for Needle-punched Composites Prepared by Different Needling Processes
QI Yunchao, FANG Guodong, ZHOU Zhengong, LIANG Jun
图6 两种不同的针刺区域
Fig.6 Two different needling areas (a) fiber deflection area and (b) fiber fracture area