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

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)365-376
Number of pages12
JournalComposite Structures
Volume215
Early online date19 Feb 2019
DOIs
DateAccepted/In press - 18 Feb 2019
DateE-pub ahead of print - 19 Feb 2019
DatePublished (current) - 1 May 2019

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.

    Structured keywords

  • Bristol Composites Institute ACCIS

    Research areas

  • Angle-ply, High strain rate, Hybrid, Pseudo-ductility, Quasi-isotropic, Thin-ply

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Documents

  • Full-text PDF (accepted author manuscript)

    Rights statement: This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Elsevier at https://www.sciencedirect.com/science/article/pii/S0263822318344751#! Please refer to any applicable terms of use of the publisher.

    Accepted author manuscript, 1 MB, PDF document

    Embargo ends: 19/02/20

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    Licence: CC BY-NC-ND

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