Durability prediction analysis on mechanical properties of GFRP upon immersion in water at ambient temperature

Abstract

In this article, the influence of varying the weight percentage of glass fiber on the water uptake, tensile and flexural strengths of glass fiber-polyester composites are evaluated. The composites are fabricated by hand lay-up process and further subjected to water immersion for a varied time period (between 0 and 180 days) at ambient temperature. Tests for Tensile and flexural strengths are conducted according to the specifications of ASTM. The test results indicate that the increase in the weight percentage of glass fiber enhanced the tensile strength (by 9-17%) and flexural strength (by 10-17%). Higher retention rates of tensile and flexural strengths are detected at higher weight percentages of glass fiber. An 86% retention rate of tensile strength and a 92% retention rate of flexural strength is detected with 50 wt.% glass fiber reinforced, water immersed specimen. The causes for the failure of specimens under tensile load are discovered with the help of SEM images. The experimental data and the data generated by the ExpDec1 model are significantly closer to each other, which indicates that the ExpDec1 model can be used for predicting the values based on the days of immersion.

Biodegradability of Musa Acuminata (Banana)-Fiber-Reinforced Bio-Based Epoxy Composites: The Influence of Montmorillonite Clay

“…Primarily, the two-sample t-test and regression modeling techniques were utilized. The two-sample t-test, also known as the independent samples t-test [22,23], was utilized to compare the mean values of the two groups: composites with and without the addition of MMT clay infill, using the independent sample size. This test determined the chances of substantial differences in biodegradability between these two groups.…”

LS-Dyna Impact Modelling on Carbon Fibre Reinforced Polymers (CFRP) Composite Aircraft Panel with Various Impactors

“…The Bombardier LEARJET 70 aircraft that can fly at Mach 0.75 is considered and the CFD and FEA simulation results help us to understand the impact of damage at the upper wing panel [1]. As laminated composites exhibit heterogeneous, anisotropic and brittle behaviour under various impact loads, the impact damage proves notable damage at both low as well as high velocities [2].…”