Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 69, Issue -, Pages 83-93Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2014.11.006
Keywords
Hybrid; Fragmentation; Delamination; Analytical modelling
Funding
- UK EPSRC Programme [EP/I02946X/1]
- Imperial College, London
- EPSRC [EP/I02946X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I02946X/1] Funding Source: researchfish
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A new simple analytical approach for predicting all possible damage modes of Uni-Directional (UD) hybrid composites and their stress-strain response in tensile loading is proposed. To do so, the required stress level for the damage modes (fragmentation, delamination and final failure) are assessed separately. The damage process of the UD hybrid can then be predicted based on the order of the required stress for each damage mode. Using the developed analytical method, a new series of standard-thickness glass/thin-ply carbon hybrid composites was tested and a very good pseudo-ductile tensile response with 1.0% pseudo-ductile strain and no load drop until final failure was achieved. The yield stress value for the best tested layup was more than 1130 MPa. The proposed analytical method is simple, very fast to run and it gives accurate results that can be used for designing thin-ply UD hybrid laminates with the desired tensile response and for conducting further parametric studies. (C) 2014 Elsevier Ltd. All rights reserved.
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