Influence of temperature on a carbon–fibre epoxy composite subjected to static and fatigue loading under mode-I delamination

Published on Oct 15, 2012in International Journal of Solids and Structures3.9
· DOI :10.1016/J.IJSOLSTR.2012.05.018
Patricia Coronado4
Estimated H-index: 4
(University of Oviedo),
Antonio Argüelles16
Estimated H-index: 16
(University of Oviedo)
+ 2 AuthorsI. Viña9
Estimated H-index: 9
(University of Oviedo)
Abstract In this paper, interlaminar crack initiation and propagation under mode-I with static and fatigue loading of a composite material are experimentally assessed for different test temperatures. The material under study is made of a 3501-6 epoxy matrix reinforced with AS4 unidirectional carbon fibres, with a symmetric laminate configuration [0°] 16/S . In the experimental programme, DCB specimens were tested under static and fatigue loading. Based on the results obtained from static tests, fatigue tests were programmed to analyse the mode-I fatigue behaviour, so the necessary number of cycles was calculated for initiation and propagation of the crack at the different temperatures. G – N curves were determined under fatigue loading, N being the number of cycles at which delamination begins for a given energy release rate. G ICmax – a , a – N and da / dN – a curves were also determined for different G cr rates (90%, 85%, 75%, etc.) and different test temperatures: 90 °C, 50 °C, 20 °C, 0 °C, −30 °C and −60 °C.
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