Toughening and self-healing of epoxy matrix laminates using mendable polymer stitching |
| |
Authors: | T Yang CH Wang J Zhang S He AP Mouritz |
| |
Affiliation: | 1. Sir Lawrence Wackett Aerospace Research Centre, School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, Melbourne, VIC 3083, Australia;2. School of Mechanical Engineering, Tianjin Polytechnic University, Tianjin 300160, China |
| |
Abstract: | This paper presents an experimental study into a new type of stitched fibre–polymer laminate that combines high interlaminar toughness with self-healing repair of delamination damage. Poly(ethylene-co-methacrylic acid) (EMAA) filaments were stitched into carbon fibre/epoxy laminate to create a three-dimensional self-healing fibre system that also provides high fracture toughness. Double cantilever beam testing revealed that the stitched EMAA fibres increased the mode I interlaminar fracture toughness (by ∼120%) of the laminate, and this reduced the amount of delamination damage that must subsequently be repaired by the self-healing stitches. The 3D stitched network was effective in delivering self-healing EMAA material extracted from the stitches into the damaged region, and this resulted in high recovery in the delamination fracture toughness (∼150% compared to the original material). The new self-healing stitching method provides high toughness which resists delamination growth while also having the functionality to repeatedly repair multiple layers of damage in epoxy matrix laminates. |
| |
Keywords: | A Functional composites B Fracture toughness C Crack D Fractography |
本文献已被 ScienceDirect 等数据库收录! |
|