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Double Beam Shear (DBS) – a new test method for determining interlaminar shear properties of composite laminates

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conference contribution
posted on 25.04.2016, 10:58 by Gang ZhouGang Zhou, Peter Nash, J. Whitaker, Nicholas Jones
A new test method, the Double Beam Shear (DBS), has been developed at Loughborough University for the determination of the interlaminar shear (ILS) mechanical properties of fibre-reinforced laminated composite materials. The DBS uses an intact beam specimen with three equal-spaced supports under two loaders in such a way that each loader is applied at the middle of two supports. Under such set-up, two longitudinal pure ILS sections are induced in the two inner regions where the corresponding bending stresses are zero. It has been validated extensively using various composite laminates including carbon and E-glass fibre reinforcements, each in more than one thickness. The overwhelming majority of the tested specimens failed consistently in one of the inner regions with interior delamination. The magnitudes of the obtained ILS strengths of the composite materials are significantly greater than the corresponding apparent ILS strengths produced by the Short Beam Method. The DBS is especially able to induce ILS failure in certain composite materials, in which the Short Beam Method is not able to. The DBS Method is simple and easy to use.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

THE 20TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS

Citation

ZHOU, G. ...et al., 2015. Double Beam Shear (DBS) – a new test method for determining interlaminar shear properties of composite laminates. Presented at: The 20th International Conference on Composite Materials, ICCM20, 19th-24th July 2015, Copenhagen, Denmark.

Publisher

Scandinavian Organizing and Scientific Committee

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

06/04/2015

Publication date

2015

Notes

This is a conference paper.

Publisher version

Language

en

Location

Copenhagen, Denmark