کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1466848 | 990077 | 2012 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Interlayer self-healing and toughening of carbon fibre/epoxy composites using copolymer films Interlayer self-healing and toughening of carbon fibre/epoxy composites using copolymer films](/preview/png/1466848.png)
This paper presents an investigation of the combined self-healing and toughening performance of two copolymers: thermoplastic poly(ethylene-co-methyl acrylate) (EMA) and poly(ethylene-co-methacrylic acid) (EMAA). Carbon fibre composites were manufactured from unidirectional prepregs with rectangular-shaped patches being placed between composite plies. Results from double-cantilever-beam and short-beam-shear testing show that the incorporation of mendable polymers improves interlaminar fracture toughness but causes a reduction in interlaminar shear strength. The healing efficiency in terms of restoration of the interlaminate fracture energy scales linearly with the areal percentage of self-healing material. Microstructure study revealed distinct difference in the fracture surfaces of composites with EMA and EMAA, with EMA displaying extensive nano-scale porous structures in contrast to the more homogenous single phase structure from EMAA.
Journal: Composites Part A: Applied Science and Manufacturing - Volume 43, Issue 3, March 2012, Pages 512–518