Fractography of interlaminar fracture of GF/epoxy laminates reinforced with fabrics
Piotr Czarnocki
Quarterly No. 3, 2017 pages 156-161
DOI:
keywords: fractography, delamination, fabric reinforced laminates
abstract Fractographic examination of laminates reinforced with 2x2 twill fabric were carried out. Two reinforcement configurations relative to the global direction of delamination growth (GDDG) were considered: warp/weft tows parallel to the GDDG and warp and weft tows aligned at 45º with it. It was found that unlike for UD reinforcement, pure global Mode I and Mode II loadings resulted in local fractures typical for mixed mode I/II loading for both the global loading modes and reinforcement orientations. The possible reasons for such fractures were provided with the help of simplified qualitative stress analysis.