Izod Impact Characteristics of Polypropylene Fiber (Ppf)/Polyester Composite Laminate With Statistical Analysis

Abstract

The main objective of the present paper is to study the impact characteristics of unidirectional polypropylene fiber (PPF)/polyester composite laminate. The PPF/polyester composite laminate was fabricated using the hand lay-up technique with fiber volume fraction of 30.28% and thickness of 6.2 ± 0.05 mm. The impact fracture characterization technique used is the notched Izod impact test. The failure modes of the impacted test specimens were investigated. Two-parameter Weibull distribution was used to analyze statistically both the absorbed impact energy and the impact strength of the studied composite in order to obtain the scatter values in the experimental test results. Also, a failure probability curve has been obtained to calculate the impact strength of PPF/polyester composite at different desired levels of failure probability. This curve can be used by the design engineers.