Du G W, Popper P, Chou T W. Analysis of 3-D textile preforms for multi-directional reinforcement of composites [J]. J Mater Sci, 1991(26):3438-3448.
[2]
Popper P, McConnell R F. Complax shaped braidod structures . US Pat. 4719837, 1988.
[3]
Li W, Hammad M, El-Shiekh A. Structural analysis of 3-D braided preforms for composites. PartⅡ:The two-step preforms [J]. J Text Inst, 1990, 81(4): 515-537.
[4]
Byun JH, Whitney TJ, Du GW, et al. Analytical characterization of 2-step braided composites[J]. J Comp Mater, 1991(25):1599-1618.
