A study of pure hydrolysis of carbon fibre reinforced polyamide 6 composites tested under mode I loading

Type Article
Date 2022-01
Language English
Author(s) Arhant MaelORCID1, Lolive Eric2, Bonnemains Thomas2, Davies PeterORCID1
Affiliation(s) 1 : IFREMER, Marine Structures Laboratory, Centre de Bretagne, Plouzané, France
2 : IUT de Brest, IRDL, Brest, France
Source Composites Part A-applied Science And Manufacturing (1359-835X) (Elsevier BV), 2022-01 , Vol. 152 , N. Part A , P. 106719 (10p.)
DOI 10.1016/j.compositesa.2021.106719
WOS© Times Cited 4
Keyword(s) Thermoplastic composites, Mode I fracture, Hydrolysis, Molar mass, Arrhenius
Abstract

This paper focuses on the durability of carbon/polyamide 6 thermoplastic composites subjected to hydrolytic aging and tested under mode I static crack growth loading. In this study, aging was performed at temperatures ranging from 100 to 140 °C for durations up to 3 months in oxygen-free water. Results show that following wet aging the fracture toughness (energy release rate) decreases significantly, from an unaged value of 3.4 kJ/m2 down to values below 1 kJ/m2 after extensive degradation. This decrease was associated with a change from ductile to brittle behaviour, which allowed a critical molar mass M’c, to be determined for the first time on long carbon fibre reinforced composites.

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