Abstract
The static and dynamic mechanical properties of carbon fibre-reinforced PEEK (APC-2) laminates subjected to long-term thermal ageing and cycling treatments have been studied using three-point bend flexure tests. Results are discussed with respect to morphological changes and degradation analysis. S/N curves were modelled using fatigue modulus degradation data. Ageing laminates at high temperatures, for long time periods, between the glass transition temperature, T g, and the melting temperature, T m, caused a significant reduction in mechanical properties. However, for short ageing periods, a crystal-perfection process occurs which enhanced the low stress level fatigue resistance of both laminate geometries.
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Buggy, M., Carew, A. The effect of thermal ageing on carbon fibre-reinforced polyetheretherketone (PEEK). JOURNAL OF MATERIALS SCIENCE 29, 1925–1929 (1994). https://doi.org/10.1007/BF00351315
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DOI: https://doi.org/10.1007/BF00351315