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Experimental investigation of high velocity oblique impact and residual tensile strength of carbon/epoxy laminates

Research output: Contribution to journalArticle

Original languageEnglish
Article number107772
Number of pages9
JournalComposites Science and Technology
Volume182
Early online date6 Aug 2019
DOIs
DateAccepted/In press - 6 Aug 2019
DateE-pub ahead of print - 6 Aug 2019
DatePublished (current) - 29 Sep 2019

Abstract

Composite components are required to be resilient against Foreign Object Damage (FOD) induced by localised high velocity impact events. Here an experimental investigation into high velocity oblique impacts and residual tensile strength of thin quasi-isotropic carbon/epoxy laminates is reported. Oblique (45°) impacts between 100 m/s and 350 m/s were carried out using 3mm steel cubes on the edge and the centre of the laminates, mounted as a cantilever beam. Impact induced damage was characterised using X-ray Computed Tomography (CT) and the residual strength of impacted laminates was determined through quasi-static tensile tests. The residual strength shows a strong dependence on the impact damage size, characterised in terms of fibre fracture width and delamination area. Machined notches were then investigated and compared to impacted laminates in terms of residual strength.

    Structured keywords

  • Composites UTC
  • Bristol Composites Institute ACCIS

    Research areas

  • Laminate, Impact behaviour, Strength, Notch

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  • 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://doi.org/10.1016/j.compscitech.2019.107772 . Please refer to any applicable terms of use of the publisher.

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    Embargo ends: 6/08/20

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    Licence: CC BY-NC-ND

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