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7 偏转纤维厚度方向的等效长度
Fig.7 Thickness direction equivalent length of deflected fiber