A New Specimen Geometry for the Iosipescu Shear Test

W. He; O. F.L. Perez; S. L. Fok; B. J. Marsden

doi:10.4028/www.scientific.net/msf.440-441.77

A New Specimen Geometry for the Iosipescu Shear Test

W. He, O. F.L. Perez, S. L. Fok, B. J. Marsden

Restorative Sciences

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

Inspired by the notch root axial splits observed in testing unidirectional composites, a new staggered geometry is proposed for the Iosipescu shear test specimen. It will be shown that the new specimen does not suffer from the tensile stress concentrations which seem to be the true cause for axial splits. Also, for the orthotropy ratio examined, the shear stress distribution across the midsection with the new geometry is more uniform than that in the original configuration. As a result, the staggered beam specimen can provide more accurate measurement of shear properties of unidirectional composites.

Original language	English (US)
Pages (from-to)	77-84
Number of pages	8
Journal	Materials Science Forum
Volume	440-441
DOIs	https://doi.org/10.4028/www.scientific.net/msf.440-441.77
State	Published - 2003
Event	Modern Practice in Stress and Vibration Analysis: Proceedings of the 5th International Conference on Modern Practice in Stress and Vibration Analysis - Glasgow, Scotland, United Kingdom Duration: Sep 9 2003 → Sep 11 2003

Keywords

Axial Split
Composite
Finite Element
Iosipescu Shear Test

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title = "A New Specimen Geometry for the Iosipescu Shear Test",

abstract = "Inspired by the notch root axial splits observed in testing unidirectional composites, a new staggered geometry is proposed for the Iosipescu shear test specimen. It will be shown that the new specimen does not suffer from the tensile stress concentrations which seem to be the true cause for axial splits. Also, for the orthotropy ratio examined, the shear stress distribution across the midsection with the new geometry is more uniform than that in the original configuration. As a result, the staggered beam specimen can provide more accurate measurement of shear properties of unidirectional composites.",

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T1 - A New Specimen Geometry for the Iosipescu Shear Test

AU - He, W.

AU - Perez, O. F.L.

AU - Fok, S. L.

AU - Marsden, B. J.

PY - 2003

Y1 - 2003

N2 - Inspired by the notch root axial splits observed in testing unidirectional composites, a new staggered geometry is proposed for the Iosipescu shear test specimen. It will be shown that the new specimen does not suffer from the tensile stress concentrations which seem to be the true cause for axial splits. Also, for the orthotropy ratio examined, the shear stress distribution across the midsection with the new geometry is more uniform than that in the original configuration. As a result, the staggered beam specimen can provide more accurate measurement of shear properties of unidirectional composites.

AB - Inspired by the notch root axial splits observed in testing unidirectional composites, a new staggered geometry is proposed for the Iosipescu shear test specimen. It will be shown that the new specimen does not suffer from the tensile stress concentrations which seem to be the true cause for axial splits. Also, for the orthotropy ratio examined, the shear stress distribution across the midsection with the new geometry is more uniform than that in the original configuration. As a result, the staggered beam specimen can provide more accurate measurement of shear properties of unidirectional composites.

KW - Axial Split

KW - Composite

KW - Finite Element

KW - Iosipescu Shear Test

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A New Specimen Geometry for the Iosipescu Shear Test

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