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Mechanical properties of auxetic carbon/epoxy composites: static and cyclic fatigue behaviour
Author(s) -
Bezazi A.,
Boukharouba W.,
Scarpa F.
Publication year - 2009
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200982042
Subject(s) - materials science , auxetics , epoxy , composite material , stiffness , dissipation , stacking , bending , work (physics) , carbon fibers , composite number , physics , nuclear magnetic resonance , engineering , thermodynamics , mechanical engineering
This work describes the effect that stacking sequence lay‐ups have on the static and cyclic fatigue properties of T300/914 auxetic carbon/epoxy composites. Two laminate composites [±20] 2S and [±25] 2S providing a theoretical NPR effect through the thickness have been subjected to quasi‐static and cyclic fatigue under 3‐point bending. The static tests have shown that the stiffness and the maximum failure load decrease with increasing fibre orientation angles for the laminates. The fatigue tests also show that the stiffness degradations versus the number of cycles occur on tree stages, with significant energy dissipation recorded for the two auxetic specimens.