Quasi-static and high strain rate response of Kevlar reinforced thermoplastics
نویسندگان
چکیده
The present study deals with the quasi-static and high strain rate characterization of Kevlar-129 based thermoplastic composites. Two different matrices, namely, Polypropylene (PP) Polyetherimide (PEI) were used to manufacture composite laminates. Quasi-static compression tests performed at rates 0.041 s ?1 0.045 . High using a split Hopkinson pressure bar apparatus within ranging from 2548 4379 Stress-strain relations reveals rate-sensitive behaviour Kevlar/PP (K-PP) showed higher peak stress under loading as compared test. Comparable stresses revealed for Kevlar/PEI (K-PEI) composite. Also, properties such stress, toughness K-PP 25%, 27% 6% than that K-PEI failure mechanisms both composites characterized through macroscopic scanning electron microscopy. failed majorly due matrix crush fibre while shear cracking. Damage single system can be tailored act an energy-absorbing or dissipating material by varying materials. • Static dynamic compressive Kevlar reinforced high-performance polymers. Kevlar/Polypropylene outperforms over Kevlar/Polyetherimide loads. strength is 25% its strength. results in ductile failure, brittle failure.
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ژورنال
عنوان ژورنال: Polymer Testing
سال: 2021
ISSN: ['1873-2348', '0142-9418']
DOI: https://doi.org/10.1016/j.polymertesting.2020.106964