High Performance Composite
Design and Manufacturing
Canada Research Chair - Tier 1

EXPERIMENTAL INVESTIGATION OF DUAL-SCALE REINFORCEMENT IMBIBITION

Professor : Edu Ruiz
Project coordinator : François LeBel, Ph.D. student
Participants : Amir Ershad Fanaei, Ph.D. student
Simon Dulong, undergraduate student

Abstract

photo

Liquid Composite Molding (LCM) is a widely used manufacturing technique for high performance composite parts. The fibrous reinforcements commonly used in LCM manufacturing have double-scale architecture due to the filaments in the fiber tows. This heterogeneity may lead to local incomplete saturation and micro/macro-voids formation during resin impregnation. Hence, problems such as ultimate shear strength reduction, early crack propagation or part rejection due to high voids content may appear.

In order to evaluate the micro/macro-architecture of the reinforcement, the global matrix/sizing/fiber interaction (wettability) and the fundamental parameters governing the fabric impregnation, a methodology based on capillary rise experiments is suggested in this work.