Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 77, Issue -, Pages 75-86Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2015.05.016
Keywords
Delamination; Mixed mode I/II; Fatigue; Temperature
Funding
- Rolls-Royce plc
- Engineering and Physical Sciences Research Council (EPSRC) through the Composites University Technology Centre at the University of Bristol (UK) [EP/I501282/1]
- Engineering and Physical Sciences Research Council [1002085] Funding Source: researchfish
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This paper addresses the effect of temperature on the mixed-mode interlaminar fracture toughness and fatigue delamination growth rate of a carbon-fibre/epoxy material, namely IM7/8552. Quasi-static and fatigue characterisation tests were carried out at -50 degrees C, 20 degrees C, 50 degrees C and 80 degrees C, using asymmetric cut-ply coupons. The experimental results show that temperature may have an accelerating or delaying effect on delamination growth, depending on the loading regime, i.e. either quasi-static or fatigue. Fractographic examinations were also carried out in order to assist the interpretation of the experimental data. A semi-empirical equation is introduced to describe the experimentally observed fatigue delamination growth rates at elevated temperatures. (C) 2015 The Authors. Published by Elsevier Ltd.
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