The Structural Design and New Weaving Technique of 3D Angle-interlock Preforms for Composites

The paper investigates angle-interlock preforms which are utilized widely in 3D textile composites. First, it classifies angle-interlock preforms according to design principle, and presents a new concept of regular angle-interlock and irregular angle-interlock; second, it introduces a new weaving technique — multi-layers and multi-sheds; last, it educes the relationship of design parameters, and describes the way and steps of constructing a vertical-section of regular angle-interlock structure. The weaving efficiency of multi-layers and multi-sheds weaving method could be much higher and weaving friction to warp could be much lower than before.