Interlacing Patterns for Steered Yarn Near Net-Shape 3D Reinforcements
This work investigates interlacing patterns made possible by a manufacturing process for drapable LCM reinforcements developed by the authors, based on the placement of dry steered yarns and their subsequent stitching. The work also discusses the selection of interlacing patterns based on key properties related to the processing and performance of composite parts. The author’s reinforcement manufacturing process leads to interlaced reinforcements of near net-shape and variable thickness. The drapable reinforcements are manufactured flat and they are custom-designed towards parts of specific geometry. The process enables variable levels of through-thickness yarn interlacing in the reinforcements. A limited number of 3D interlacing patterns are frequently referred to in the literature including orthogonal and interlock constructions, but little formal quantification of possible interlacing patterns is available. This paper focuses on interlacing patterns that may be created using author’s manufacturing process which is based on the placement of dry steered yarns.
Author: Francois Robitaille
Conference: SAMPE Seattle 2017