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Article Dans Une Revue Composites Part A: Applied Science and Manufacturing Année : 2022

Experimental investigation of high strain-rate, large-scale crack bridging behaviour of z-pin reinforced tapered laminates

Résumé

Significant research exists on small-scale, quasi-static failure behaviour of Z-pinned composite laminates. However, little work has been conducted on large-scale, high strain-rate behaviour of Z-pinned composites at structural level. Small-scale testing is often at an insufficient scale to invoke the full crack bridging effects of the Z-pins. Full-scale testing on real components involves large length scales, complex geometries and resulting failure mechanisms that make it difficult to identify the specific effect of Z-pins on the component failure behaviour. A novel cantilever soft body impact test has been developed which is of sufficient scale to invoke large-scale delamination, such that behaviour in Z-pin arrays at high strain-rates can be studied. Laminates containing Z-pin arrays were subjected to soft-body gelatine impact in high-speed light gas-gun tests. Detailed fractographic investigation was carried out to investigate the dynamic failure behaviour of Z-pins at the microscopic scale.
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Dates et versions

hal-03551501 , version 1 (01-02-2022)

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A.D. D Cochrane, Joël Serra, J.K. K Lander, H. Böhm, T. Wollmann, et al.. Experimental investigation of high strain-rate, large-scale crack bridging behaviour of z-pin reinforced tapered laminates. Composites Part A: Applied Science and Manufacturing, 2022, 155, pp.106825. ⟨10.1016/j.compositesa.2022.106825⟩. ⟨hal-03551501⟩
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