A novel technique to accurately measure the fibre failure strain in composite laminates under a combined in-plane tension and shear stress state

Meisam Jalalvand, Mohammad Fotouhi, Mun Choong Leong, Michael R. Wisnom

Research output: Contribution to conferencePaper

Abstract

A simple and accurate test method is presented to investigate the influence of shear stresses on tensile failure of unidirectional carbon fibre/epoxy. Glass/carbon hybrid laminates are used to eliminate stress concentrations and avoid premature failure at the end-tabs. Free-edge delamination is suppressed using thin-plies. Angle-ply carbon/epoxy laminates have been designed to achieve combinations of tensile and shear stresses. It is shown that in-plane shear does not significantly affect the fibre failure strains.

LanguageEnglish
Number of pages5
Publication statusPublished - 25 Aug 2017
Event21st International Conference on Composite Materials, ICCM 2017 - Xi'an, China
Duration: 20 Aug 201725 Aug 2017

Conference

Conference21st International Conference on Composite Materials, ICCM 2017
CountryChina
CityXi'an
Period20/08/1725/08/17

Fingerprint

Laminates
Shear stress
Carbon
Fibers
Composite materials
Delamination
Tensile stress
Carbon fibers
Stress concentration
Glass
carbon fiber

Keywords

  • combined stress state
  • failure criterion
  • fibre failure strain
  • testing method
  • multi-axial loads

Cite this

Jalalvand, M., Fotouhi, M., Leong, M. C., & Wisnom, M. R. (2017). A novel technique to accurately measure the fibre failure strain in composite laminates under a combined in-plane tension and shear stress state. Paper presented at 21st International Conference on Composite Materials, ICCM 2017, Xi'an, China.
Jalalvand, Meisam ; Fotouhi, Mohammad ; Leong, Mun Choong ; Wisnom, Michael R. / A novel technique to accurately measure the fibre failure strain in composite laminates under a combined in-plane tension and shear stress state. Paper presented at 21st International Conference on Composite Materials, ICCM 2017, Xi'an, China.5 p.
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Jalalvand, M, Fotouhi, M, Leong, MC & Wisnom, MR 2017, 'A novel technique to accurately measure the fibre failure strain in composite laminates under a combined in-plane tension and shear stress state' Paper presented at 21st International Conference on Composite Materials, ICCM 2017, Xi'an, China, 20/08/17 - 25/08/17, .

A novel technique to accurately measure the fibre failure strain in composite laminates under a combined in-plane tension and shear stress state. / Jalalvand, Meisam; Fotouhi, Mohammad; Leong, Mun Choong; Wisnom, Michael R.

2017. Paper presented at 21st International Conference on Composite Materials, ICCM 2017, Xi'an, China.

Research output: Contribution to conferencePaper

TY - CONF

T1 - A novel technique to accurately measure the fibre failure strain in composite laminates under a combined in-plane tension and shear stress state

AU - Jalalvand, Meisam

AU - Fotouhi, Mohammad

AU - Leong, Mun Choong

AU - Wisnom, Michael R.

PY - 2017/8/25

Y1 - 2017/8/25

N2 - A simple and accurate test method is presented to investigate the influence of shear stresses on tensile failure of unidirectional carbon fibre/epoxy. Glass/carbon hybrid laminates are used to eliminate stress concentrations and avoid premature failure at the end-tabs. Free-edge delamination is suppressed using thin-plies. Angle-ply carbon/epoxy laminates have been designed to achieve combinations of tensile and shear stresses. It is shown that in-plane shear does not significantly affect the fibre failure strains.

AB - A simple and accurate test method is presented to investigate the influence of shear stresses on tensile failure of unidirectional carbon fibre/epoxy. Glass/carbon hybrid laminates are used to eliminate stress concentrations and avoid premature failure at the end-tabs. Free-edge delamination is suppressed using thin-plies. Angle-ply carbon/epoxy laminates have been designed to achieve combinations of tensile and shear stresses. It is shown that in-plane shear does not significantly affect the fibre failure strains.

KW - combined stress state

KW - failure criterion

KW - fibre failure strain

KW - testing method

KW - multi-axial loads

M3 - Paper

ER -

Jalalvand M, Fotouhi M, Leong MC, Wisnom MR. A novel technique to accurately measure the fibre failure strain in composite laminates under a combined in-plane tension and shear stress state. 2017. Paper presented at 21st International Conference on Composite Materials, ICCM 2017, Xi'an, China.