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

Autor: A.D. Cochrane, J. Serra, J.K. Lander, H. Böhm, T. Wollmann, A. Hornig, M. Gude, I.K. Partridge, S.R. Hallett
Přispěvatelé: Advanced Composites Centre for Innovation and Science (ACCIS), University of Bristol [Bristol], Rolls Royce PLC, Los Alamos National Laboratory (LANL), Institute of Lightweight Engineering and Polymer Technology (ILK)
Rok vydání: 2022
Předmět:
Zdroj: Composites Part A: Applied Science and Manufacturing
Composites Part A: Applied Science and Manufacturing, Elsevier, 2022, 155, pp.106825. ⟨10.1016/j.compositesa.2022.106825⟩
ISSN: 1359-835X
DOI: 10.1016/j.compositesa.2022.106825
Popis: International audience; 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.
Databáze: OpenAIRE
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