About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
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Presentation Title |
Fatigue Behavior and Modeling of PEEK Polymer under Uniaxial and Multiaxial Loadings |
Author(s) |
Rakish Shrestha, Jutima Simsiriwong, Nima Shamsaei |
On-Site Speaker (Planned) |
Rakish Shrestha |
Abstract Scope |
Engineering thermoplastics are being extensively used in aerospace, automotive, and bio-medical industries as a lightweight alternative for manufacturing structural components that are subjected to cyclic loading. As a result, the understanding of fatigue behavior of polymeric materials, especially under various realistic cyclic loading conditions, need to be fully obtained. In this study, the fatigue resistance of polyether ether ketone (PEEK), an engineering thermoplastic, is investigated under various strain-controlled loading conditions. These include (I) uniaxial fatigue tests with and without mean strains, (II) uniaxial fatigue tests with variable amplitude loadings, and (III) multiaxial fatigue tests. Deformation behavior for PEEK polymer under different loading conditions is discussed using both macroscopic and microscopic analyses. A damage parameter capable of correlating the fatigue life obtained from various loading conditions is also proposed. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |