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Validation of a nov...
Validation of a novel model for the compressive response of FRP:experiments with different fibre orientations
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- Bru, Thomas (författare)
- RISE,SICOMP,Chalmers University of Technology, Sweden
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- Olsson, Robin (författare)
- RISE,SICOMP
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- Vyas, Gaurav (författare)
- RISE,SICOMP
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visa fler...
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- Costas, Sérgio (författare)
- RISE,SICOMP,Chalmers University of Technology, Sweden
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visa färre...
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(creator_code:org_t)
- 2017
- 2017
- Engelska.
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- Crush tests have been performed on flat unidirectional non-crimp fabric (NCF) coupons with differentfibre orientations as part of the validation of a ply-based damage model for crash. The fibre off-axisangle with respect to the crushing direction ranged from 0º to 90°. The results of the tests indicate thatthe crush stress remains unchanged for off-axis angles between 0° and 15°. The failure mode in thesespecimens was out-of-plane kinking. For 20° and 25° off-axis angles the crush stress dropped 20% andevidence of out-of-plane kinking were harder to find. For 45° off-axis angle a network of matrixcracks develops in the specimen and for 90° off-axis angle a brittle shear failure is observed. It issuggested that the out-of-plane kinking is promoted because of the natural waviness of NCF materialsand that the high in-plane shear stress generated from 20-25° off-axis loading results in a transitionfrom out-of-plane kinking to in-plane kinking. These hypotheses need, however, to be verified by anextended failure analysis of the crush specimens.
Nyckelord
- Crushing
- Mechanical testing
- Fibre kinking
- Fractography
- Non-crimp fabric
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)