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Translaminar enveloping ply for CFRP interlaminar toughening by Jiahe Ma; Qiang Xu; Weidong Zhu; Yinglin Ke is a Engineering article available to read on EtoBox.

What is Translaminar enveloping ply for CFRP interlaminar toughening about?

Developing low-cost and high-performance interlaminar toughening strategies for the advanced CFRP products has great engineering significances. Combining features on practical automated fiber placement and well-recognized 3D reinforcement technologies in the field of CFRP composites, herein, we alternately introduced a reinforcement ply in the manner of translaminar enveloping to generate interlocking and binding action into conventional lay-ups. Remarkably, more than 1700% for mode I (DCB) and 500% for mode II (ELS) propagation fracture toughness improvements were experimentally investigated. The evolution of interlaminar toughening behaviors was specifically revealed. Multiple fracture energy absorption stages, successively including delamination tolerance, partial interface pull-out and through-thickness ruptures, reflect long-acting mode I toughening capacity. Under the multi-interface synergistic shear-delamination mechanism, the mode II crack growth gets far more effectively suppressed. Meanwhile, the in-plane tensile and compressive strength could be maintained acceptably. We also gave insights into the technical superiorities of this original ply-level reinforcing work.

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Author

Jiahe Ma; Qiang Xu; Weidong Zhu; Yinglin Ke

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)