Journal article
Shear Moduli of Structural Composites from Torsion Tests
Journal of composite materials, Vol.36(10), pp.1151-1173
05/2002
Handle:
https://hdl.handle.net/2376/105122
Abstract
A combined experimental/analytical approach for effective evaluation of in-plane and out-of-plane shear moduli of structural composite laminates from torsion is presented. The test samples are produced by pultrusion and consist of E-glass fiber systems and vinylester resin. Three types of rectangular samples are used: unidirectional samples cut from plates; angle-ply and angle/cross ply samples cut from wide-flange beams. The shear moduli are obtained from the experimental torsional stiffnesses (T/) and data reduction techniques based on torsion solutions by Lekhnitskii and Whitney. The classical approach of usingpaired samples of different widths but same material orientation can grossly underestimate out-of-plane shear moduli. Thus, to overcome this problem, samples with material orientations normal to each other are used, and to obtain samples of larger dimensions than the available thicknesses of the material, the pultruded laminates are bonded flat-wise, from which transverse strips of different widths are cut. Consistent results are obtained by the two data reduction techniques, and the experimental values are compared to predictions by micro/macro-mechanics models.
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Details
- Title
- Shear Moduli of Structural Composites from Torsion Tests
- Creators
- Julio F Davalos - Department of Civil and Environmental Engineering, West Virginia University, Morgantown, WV 26506-6103, USAPizhong Qiao - Department of Civil Engineering, The University of Akron, Akron, OH 44325-3905, USAJialai Wang - Department of Civil Engineering, The University of Akron, Akron, OH 44325-3905, USAHani A Salim - Department of Civil Engineering, University of Missouri, Columbia, MO 65211-2200, USAJeremy Schlussel - Department of Civil and Environmental Engineering, West Virginia University, Morgantown, WV 26506-6103, USA
- Publication Details
- Journal of composite materials, Vol.36(10), pp.1151-1173
- Academic Unit
- Civil and Environmental Engineering, Department of
- Identifiers
- 99900546879901842
- Language
- English
- Resource Type
- Journal article