3-D textile reinforcements in composite materials 17 wo'ssaudmau 'peaypoom//:dny Aq d 1.6 Orthogonal woven fabrics. 'I'EI'85I :ssappy dl 1.7 Unit cell for orthogonal non-woven fabrics. volume fraction of about 0.47 is achieved when both d/d,and d/d ratios are equal to 1. 1.3.3 Knitted 3-D fabrics The knitted 3-D fabrics are produced by either the weft knitting or warp knitting process.An example of a weft knit is the near net shape structurevolume fraction of about 0.47 is achieved when both dy/dx and dy/dx ratios are equal to 1. 1.3.3 Knitted 3-D fabrics The knitted 3-D fabrics are produced by either the weft knitting or warp knitting process. An example of a weft knit is the near net shape structure 3-D textile reinforcements in composite materials 17 1.6 Orthogonal woven fabrics. 1.7 Unit cell for orthogonal non-woven fabrics. RIC1 7/10/99 7:15 PM Page 17 Copyrighted Material downloaded from Woodhead Publishing Online Delivered by http://woodhead.metapress.com Hong Kong Polytechnic University (714-57-975) Saturday, January 22, 2011 12:29:37 AM IP Address: 158.132.122.9