Authors
Abstract
Study of the fatigue behaviors experimentally and theoretically of a composite
material manufactured for this paper by stacking four layers of E-glass fiber in
different angle orientations (0o, ± 45o, 0o/90o) immersed in polyester resin with total
thickness 4 mm. They were tested under two types of dynamic loads in fully reversible
tension-compression load at (R=-1) and spectrum load as fatigue testing, to estimate life
curves and microscopic an examination was carried out for stress affected and fracture
areas. Finite Element Analysis (FEA) using ANSYS Workbench™ was used to
evaluate the composite behaviour under fatigue conditions. The results of the fatigue
test show that the uniaxial [04] composite has the highest strength and the fatigue
degradation is also the highest. The high magnification optical microscopy method
shows that the failure of laminas at ± 45oand 0o/ 90o is due to matrix failure in the
direction of the fiber, whereas for the unidirectional lamina at 0o, the failure is due to
fiber breakages.
Keywords
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