TENSILE AND SHEAR PROPERTIES OP CROSS-PLY COMPOSITE LAMINATES WITH DIFFERENT OFF-AXIS ANGLES

Document Type : Original Article

Authors

1 Mechanical Design andProducfion Engineering Depmment, FacuNy ofEngineering, Zagazig Universily, P.O. Box 44519, Zagazig, E~gyp

2 Mechanical Design andProducfion Engineering Depmment, FacuNy ofEngineering, Zagazig Universily, P.O. Box 44519, Zagazig, E~gypt

Abstract

A double-notch and modified Iosipescu shear test fixtures have been designed and manufactured
to investigate in-plane shear properties of cross-ply composite laminate with different off-axis
angles. A cross-ply [0°/900]2, glasslpolyester composite laminate was manufactured using hand
lay-up technique. This laminate was cut at different off-axis angles (€lo= O0, 15", 30' and 45") to
give different stacking sequences ([0°1900]2,, [15°1-75012,, [30°/-6O012, and [45"1-45"1~,
respectively). The tensile properties (strength, modulus, and Poisson's ratio) were determined
experimentally and theoretically fiom the elastic properties of the constituent materials. Shear
properties (strength and modulus) were determined experimentally by the two tests. Shear
modulus were predicted theoretically fiom the elastic properties of the constituent materials.

Keywords

ERJ. Engineering Research Journal
Volume 31, Issue 2
April 2008
Pages 181-190

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