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Country Risk to Face Global Emergencies: Negative Effects of High Public Debt on Health Expenditures and Fatality Rate in COVID-19 Pandemic Crisis
Mario Coccia
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Deep Learning-based Multi-class Three-dimensional (3-D) Object Classification using Phase-only Digital Holographic Information
Uma Mahesh RN and L Basavaraju
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Engineering Group Review Article Article ID: igmin221

The Effect of Stacking Sequence and Ply Orientation with Central Hole on Tensile Behavior of Glass Fiber-polyester Composite

Materials Science Mechanical Engineering DOI10.61927/igmin221
Ahmad E Eladawi *
Affiliation

Affiliation

    Ahmad E Eladawi, Department of Mechanical Engineering, Benha University, Banha, Egypt, Email: [email protected]

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Abstract

An experimental investigation was carried out to study the effect of circular cross-holes on the failure behavior of unidirectional glass fiber reinforced with unsaturated polyester resin composites, varying cross-ply laminates that were subjected to axial tensile load. This paper deals with the effects of the circular notch and the number of plies on nominal tensile and net tensile strengths. Tensile strengths were investigated for composites with cross-ply([0/90]. [90°/0°/90°] and [0°/90°/0°].90°), orientation and varying the laminate layers with a central hole, and effects of volume fraction and number of ply on mechanical properties for un-notched (smooth) and notched specimens were also studied. The results showed that increasing the number of plies has a marginal effect on tensile strength values. The fraction of volume has significant effects and for increasing the number of plies about 9% decreases in nominal tensile strength and about 11% decrease in the net tensile strength was observed. The same results were obtained with finite element analysis.

Figures

The tensile properties for unnotched and open-hole Glass fiber laminate composites. Figure 1: The tensile properties for unnotched and open-hole...
Samples with varying crossly laminated layer. Figure 2: Samples with varying crossly laminated layer....
Plies number effects on nominal tensile strength/different hole diameters. Figure 3: Plies number effects on nominal tensile strength/d...
Tensile strength vs diameter-width ratio with varying cross-plys Figure 4: Tensile strength vs diameter-width ratio with vary...
Fiber volume friction affects normal tensile strength with varying numbers of plies. Figure 5: Fiber volume friction affects normal tensile stren...
Effect of number of plies on net tensile strength on varying notch size. Figure 6: Effect of number of plies on net tensile strength ...
Diameter-width ratio effect on net tensile strength. Figure 7: Diameter-width ratio effect on net tensile strengt...
Effect of fraction volume on net tensile strength with varying number of plies. Figure 8: Effect of fraction volume on net tensile strength ...
a-D = 2.5mm, D = 5mm, D = 7 mm, Crack growth path with different hole diameters. Figure 9: a-D = 2.5mm, D = 5mm, D = 7 mm, Crack growth path ...
a-D = 2.5 mm, b-D = 5 mm, c-D = 7 mm. The von Mises contour stress with different hole diameters. Figure 10: a-D = 2.5 mm, b-D = 5 mm, c-D = 7 mm. The von Mise...

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