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Validation of a nov...
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Bru, Thomas,1990Chalmers tekniska högskola,Chalmers University of Technology
(author)
Validation of a novel model for the compressive response of FRP: experiments with different fibre orientations
- Article/chapterEnglish2017
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LIBRIS-ID:oai:research.chalmers.se:6ba2eaae-ebd7-427b-b8c3-4201ac9f6bd6
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https://research.chalmers.se/publication/503885URI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:kon swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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Crush tests have been performed on flat unidirectional non-crimp fabric (NCF) coupons with different fibre orientations as part of the validation of a ply-based damage model for crash. The fibre off-axis angle with respect to the crushing direction ranged from 0º to 90°. The results of the tests indicate that the crush stress remains unchanged for off-axis angles between 0° and 15°. The failure mode in these specimens was out-of-plane kinking. For 20° and 25° off-axis angles the crush stress dropped 20% and evidence of out-of-plane kinking were harder to find. For 45° off-axis angle a network of matrix cracks develops in the specimen and for 90° off-axis angle a brittle shear failure is observed. It is suggested that the out-of-plane kinking is promoted because of the natural waviness of NCF materials and that the high in-plane shear stress generated from 20-25° off-axis loading results in a transition from out-of-plane kinking to in-plane kinking. These hypotheses need, however, to be verified by an extended failure analysis of the crush specimens.
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Olsson, Robin,1958Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)robinol
(author)
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Vyas, Gaurav
(author)
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Costa, Sergio,1987Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)sergioc
(author)
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Chalmers tekniska högskola
(creator_code:org_t)
Related titles
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In:ICCM International Conferences on Composite Materials2017
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