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Comparison of open hole tension characteristics of high strength glass and carbon fibre-reinforced composite materials

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posted on 2023-02-17, 11:36 authored by Ronan M. O'Higgins, Michael McCarthyMichael McCarthy, Conor Mc CarthyConor Mc Carthy
An experimental study was carried out to determine the open hole tension (OHT) characteristics of carbon fibre-reinforced plastic (CFRP) and high strength S2-glass fibre-reinforced plastic (GFRP). Tests to failure and percentages of ultimate load were carried out and non-destructive techniques were used to map damage progression. it was found that the CFRP OHT specimens were stronger, while the GFRP OHT specimens had greater ultimate strain. However, damage progression mechanisms in the two material systems were very similar. This is in contrast with previous findings on E-glass composites, indicating that S2-glass FRP notched failure behaviour is closer to a high-performance CFRP. Higher levels of damage formation prior to failure were found to result in higher OHT strength (S(OHT)). Blocked- ply stacking sequences were found to give higher damage levels and SOHT than sub-laminate level stacking sequences, and similar trends were found when laminate thickness was reduced. Non-linear transverse behaviour in GFRP resulted in lower levels of matrix cracking in OHT specimen 90 degrees plies, compared to CFRP, providing a barrier to the growth of stress relieving axial splits in 0 degrees plies. (c) 2008 Elsevier Ltd. All rights reserved.


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Composites Science and Technology;68 (13), pp. 2770-2778





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This is the author’s version of a work that was accepted for publication in Composites Science and Technology . Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composites Science and Technology;68 (13), pp. 2770-2778,



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  • Irish Centre for Composites Research (IComp)
  • Bernal Institute

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