A pseudo ductile angle-ply sub-laminate approach for multidirectional thin ply CFRP laminates

Jonathan D. Fuller, Meisam Jalalvand, Michael R. Wisnom

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

1 Citation (Scopus)

Abstract

Analytical modelling of thin ply angle-ply [±θ/0]s carbon-epoxy layups consisting of intermediate modulus MR60 and ultra high modulus YSH70A prepreg materials has been conducted to establish a candidate configuration for use as a pseudo-ductile sub-laminate in a multidirectional laminate. These layups have demonstrated considerable pseudo-ductility via gradual failure of the 0° ply. Stress-strain predictions of [±25/0]s, in particular, have shown that this layup possesses a high initial modulus of 135 GPa and produce a pseudo-ductile strain of 1.43%, for a strength of 761 MPa. Selected as a sub-laminate configuration, this layup has been applied to two stacking sequences: [30/0/ - 30]s and [45/0/ - 45]s, where the global orientations correspond to the direction of the 0° ply in each sub-laminate. Classical laminate analysis indicates that these multidirectional laminates can exploit the pseudo-ductility of the sub-laminates to achieve a gradual failure at a higher scale.

Original languageEnglish
Title of host publicationECCM 2016 - Proceeding of the 17th European Conference on Composite Materials
Place of PublicationAugsburg, Bavaria
Publication statusPublished - 30 Jun 2016
Event17th European Conference on Composite Materials, ECCM 2016 - Munich, Germany
Duration: 26 Jun 201630 Jun 2016

Conference

Conference17th European Conference on Composite Materials, ECCM 2016
CountryGermany
CityMunich
Period26/06/1630/06/16

Keywords

  • gradual failure
  • pseudo-ductility
  • thin ply

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    Fuller, J. D., Jalalvand, M., & Wisnom, M. R. (2016). A pseudo ductile angle-ply sub-laminate approach for multidirectional thin ply CFRP laminates. In ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials