FATIGUE LIFE ESTIMATION OF DEGRADED E-GLASS FRP TEST SPECIMEN USING SIMULATION & EXPERIMENTAL VALIDATION

Abstract

Increased popularity in the structural, automotive, aero and wind turbine sectors damaged and eventual failure during operation.Fatigue time-consuming and costly work are the results of life testing. The objective is to predict progressive fatigue damage and lifetime of the composite laminate, based on the fatigue characteristic of the E glass fibre, longitudinal, transverse and flat shear.Various types of fibre-orientation sheets made from composite materials were produced.This paper focuses on fiber orientation effect on the strength of fatigue of [±45 °] and [0/90 °] and Unidirectional enhanced composites (GFRP). The composite is manufactured using a layout method from E-glass fiber and epoxy resin and hardener. Such application are often exposed to fatigue loads, and therefore, In order to achieve a proper design, the fatigue behavior of the composites must be studied.This is achieved through an experimental characterization in which many specimens are tested for various parameters (i.e., fiber/matrix ratio,
fiber orientation, staking sequence, etc.).The test setup is designed to be validated and reasonably functional. S-Ncurves showed the results that unidirectional orientation has a greater fatigue depending on the fiber orientation. The results have shown that the GFRP fibre orientation significantly affected the mechanical characteristics and the fatigue behaviour.