Fatigue Behavior of Impacted Plain-Weave Glass/Epoxy Composites under Tensile Fatigue Loading

Abstract

The goals of this paper are to identify the impact damage behavior of plain-weave E-glass/epoxy composites and predict the fatigue life of the composites with impact-induced damage under constant amplitude loading. To identify these behaviors, the low velocity impact and fatigue after impact tests are performed for glass/epoxy composites having two types of fiber orientations. The impact damage behavior is dependent on the fiber orientation of the composites. The fatigue life of the impacted composites can be identified through the prediction model, which was proposed on the carbon/epoxy laminates by authors regardless of fiber orientations.

Evaluation of the influence of preliminary low-velocity impacts on the residual fatigue life of CFRP composites

“…Amongst the most dangerous loads that may occur during operation are low-speed impacts oriented perpendicularly to the orientation of the reinforcing layers. These types of loads cause interlayer cracking of material structure, which may eventually lead to delamination and decreased performance of structures made of composite materials (Cantwell and Morton, 1991;Kang et al, 2005;Feng et al, 2017;Bogenfeld et al, 2020). For these load types, the main study methods are local impact tests using a falling ball weight, as well as compression tests after the impact to assess the residual strength of composite laminates (Tai et al, 1998;Suh et al, 2003;Staroverov et al, 2019Staroverov et al, , 2021.…”

“…Amongst the most dangerous loads that may occur during operation are low-speed impacts oriented perpendicularly to the orientation of the reinforcing layers. These types of loads cause interlayer cracking of material structure, which may eventually lead to delamination and decreased performance of structures made of composite materials (Cantwell and Morton, 1991; Kang et al. , 2005; Feng et al.…”