The high strain rate tension behaviour of pseudo-ductile high performance thin ply composites

Fotouhi, M. , Fuller, J., Longana, M., Jalalvand, M. and Wisnom, M. R. (2019) The high strain rate tension behaviour of pseudo-ductile high performance thin ply composites. Composite Structures, 215, pp. 365-376. (doi: 10.1016/j.compstruct.2019.02.068)

Abstract

In this study the effect of strain rate in tension on two different types of thin-ply pseudo-ductile laminates is reported. These comprised Unidirectional (UD) and quasi-isotropic (QI) hybrids made from low strain thin-ply carbon/epoxy and high strain glass/epoxy prepreg and all-carbon laminates made from thin-ply [±ϴ/0]s laminates referred to as angle-ply (AP) composites. Laminates were designed and subjected to a range of cross-head speeds from 2 mm/min (0.0003 s-1) to 10 m/s (100 s-1). The designed laminates were made from single or hybrids of low strain and high strain unidirectional prepregs, i.e. thin-ply Carbon/epoxy and Glass/epoxy, respectively. Dynamic stress–strain plots and details of the damage mechanisms were obtained for each sample and compared with the quasi-static test results. The investigated thin-ply UD and QI hybrid composite laminates showed excellent pseudo-ductility at different strain rates, whereas the AP laminates were strain rate dependent and pseudo-ductility decreased with increasing strain rate.

• Item Type: Articles
• Additional Information: This work was funded under the UK Engineering and Physical Sciences Research Council (EPSRC) Programme Grant EP/I02946X/1 on High Performance Ductile Composite Technology in collaboration with Imperial College, London. The research was also supported by “the EPSRC ”High Performance Discontinuous Fibre Composites a sustainable route to the next generation of composites” [EP/P027393/1] grant”.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Fotouhi, Dr Mohammad
• Authors: Fotouhi, M., Fuller, J., Longana, M., Jalalvand, M., and Wisnom, M. R.
• Subjects: T Technology > TA Engineering (General). Civil engineering (General)
• College/School: College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity
• Journal Name: Composite Structures
• Publisher: Elsevier
• ISSN: 0263-8223
• ISSN (Online): 1879-1085
• Published Online: 19 February 2019
• Copyright Holders: Copyright © 2019 Crown Copyright
• First Published: First published in Composite Structures 215: 365-376
• Publisher Policy: Reproduced in accordance with the publisher copyright policy