Experimental and Regression Analysis on Impact Behaviour of the Thermally Aged Wollastonite Filled E-glass Fibre Reinforced Epoxy Composite

• Published in: Journal of the Institution of Engineers (India): Series D Vol. 105; no. 3; pp. 1609 - 1617
• Main Authors: Lokesh, K. S., Mayya, D. Shrinivasa, Shanmugam, Bharath Kumar, Kumar, J. R. Naveen, Puneeth, S., Raghavendra, B. M.
• Format: Journal Article
• Language: English
• Published: New Delhi Springer India 2024; Springer Nature B.V
• Subjects: Damage assessment; E glass; Engineering; Epoxy matrix composites; Fiber composites; Fiber reinforced polymers; Fillers; Glass fiber reinforced plastics; Glass-epoxy composites; Hand lay-up; Impact analysis; Impact strength; Original Contribution; Pressure molding; Regression analysis; Regression models; Room temperature; Time constant; Wollastonite; Impact resistance; Filler composites; Thermal ageing
• ISSN: 2250-2122; 2250-2130
• DOI: 10.1007/s40033-023-00580-w

In the present Study, preparation of E-glass reinforced with epoxy composites were done by adding wollastonite mineral filler to epoxy matrix with varied filler composition of 1%, 3%, 5% and 7% by weight and samples are prepared through manual hand layup method followed by compression moulding. Continuing to this GFRP sample loaded with wollastonite is exposed to different temperature conditions viz., room temperature, heating cycle of + 50 °C, cooling cycle of − 5 °C for the duration of 168 hrs. Effect of filler on the impact behaviour E-glass/epoxy composites has been done through digital pendulum impact testing device to determine the energy absorbed, impact strength of samples when the samples are subjected to thermal aging by keeping time constant and by varying temperature. It has been concluded that the addition of filler influences greatly on impact properties of GFRP composites. Damage analysis was made using SEM and also the linear regression model was also adopted to predict the correlation with experimental values.