Experimental Investigation and
Mathematical Modeling of Unsaturated Polyester Reinforccd by
Woven Glass Fibers |
This
research studied the tensile properties of glass fiber
reinforced unsaturated polyester with different fiber volume
fraction Vf, and angle of fibers for coarse and fine woven
fibers reinforcement. The composite specimens were prepared by
hand lay-up technique and cutting according to (ASTM D – 638)
for tensile test to obtain modulus of elasticity, ultimate
tensile strength and elongation percentage of the composite
specimens. Mathematical models were done by using statistical
analysis which shows the tensile properties of the composite
specimens as a function of volume fraction and fiber angle. The
results show that the maximum value of the modulus of elasticity
was (11.5 GPA) and the maximum value of ultimate tensile
strength was (240 MPa) which happed at (11% VF) for fine woven
fibers and for (0º/90º) fibers angle, and vice versa for
percentage elongation was (2.5%). |
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