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Experimental and numerical investigation of the intra-ply shear behaviour of unidirectional prepreg forming through picture-frame test
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Yuan, Hao, Khan, Muhammad Aurangzeb, Qian, Connie, Reynolds, Neil and Kendall, Kenneth N. (2023) Experimental and numerical investigation of the intra-ply shear behaviour of unidirectional prepreg forming through picture-frame test. Composites Part B: Engineering, 266 . 11036. doi:10.1016/j.compositesb.2023.111036 ISSN 1359-8368.
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Official URL: https://doi.org/10.1016/j.compositesb.2023.111036
Abstract
Intra-ply shear behaviour of uncured composite plies strongly influences component quality in advanced manufacturing processes such as prepreg compression moulding (PCM) and double diaphragm forming (DDF).
This study investigates a straightforward method to characterise the intra-ply shear behaviour of a carbon fibre/ epoxy UD prepreg using a specially designed picture-frame rig, by which specimens can be tested without involving inter-ply shear as would normally be observed in cross-plied UD prepreg stacks. Applying the proposed method, it is seen that specimens tend to suffer transverse buckling/wrinkling and local fibre-splitting at large shear strains. 3D digital image correlation (DIC) and a non-contacting video extensometer were utilised to determine the shear strain distribution throughout the test and particularly to determine the onset of out-of-plane deformations such that the trellis shear deformation portion of the test can be identified. The obtained shear stress-strain results show a temperature- and rate-dependent viscoelastic response, with the greatest influence from the temperature. The obtained in-plane shear properties were applied in the numerical simulation of the picture frame test based on a hypoelastic law. Although the predicted reaction forces are greater than experimental results at high strains due several factors including local fibre-splitting, a good agreement overall between
physical test data and simulation results is seen for all test conditions. Finally, it is demonstrated that major advantages of the proposed test with respect to the conventional picture-frame test are that only load-extension data are required from the trellis shear experiment to calculate accurately the intra-ply shear stress-strain relationship and that the deformation rate can be easily controlled.
Item Type: | Journal Article | ||||||||||||
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Subjects: | T Technology > TS Manufactures | ||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||||
Library of Congress Subject Headings (LCSH): | Composite materials -- Manufacturing., Composite materials -- Industrial applications, Reinforced plastics, Composite materials industry | ||||||||||||
Journal or Publication Title: | Composites Part B: Engineering | ||||||||||||
Publisher: | Elsevier Sci Ltd. | ||||||||||||
ISSN: | 1359-8368 | ||||||||||||
Official Date: | November 2023 | ||||||||||||
Dates: |
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Volume: | 266 | ||||||||||||
Article Number: | 11036 | ||||||||||||
DOI: | 10.1016/j.compositesb.2023.111036 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
Date of first compliant deposit: | 2 November 2023 | ||||||||||||
Date of first compliant Open Access: | 6 November 2023 | ||||||||||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC), China Scholarship Council (CSC) | ||||||||||||
Grant number: | EP/R513581/2 | ||||||||||||
RIOXX Funder/Project Grant: |
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