Dynamic mechanical thermal analysis of unaged and hygrothermally aged discontinuous Bouligand structured CFRP composites
نویسندگان
چکیده
Abstract A dynamic mechanical thermal analyser operating in the single cantilever mode was used to examine properties of unaged and hygrothermally aged discontinuous asymmetric helicoidal (Bouligand) carbon fibre reinforced plastic (CFRP) composites as a function architecture. The Bouligand manufactured using two major pitch angles independent variables: 90° 120° from each angle, minor interply were variables ranging 5°–25°. tested either dry specimens or following hygrothermal ageing seawater at constant temperatures 40 °C 60 for over 2000 h. We find that viscoelastic E ′ ″ are adversely affected by both aging but not angle. Higher increasing found decrease energy absorption dissipation capacities structured CFRP composites. tan- δ curves also indicate increases heterogeneity composites, with separate phases glass transition temperatures.
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ژورنال
عنوان ژورنال: Functional composites and structures
سال: 2022
ISSN: ['2631-6331']
DOI: https://doi.org/10.1088/2631-6331/ac99d2