Tribological behaviour of hybrid reinforced vinyl ester based functionally graded materials. (2021)

• Record Type: Journal Article
• Authors: Gautam, Vikash; Kumar, Ashiwani; Sharma, Aakash; Kumar, Ashiwani; Kumar, Deepak
• Is Part Of: Materials today. Volume 44:Part 6(2021)
• Page Start: 4682
• Page End: 4688
• Publication Date: 2021
• Subjects: Hybrid FGM -- Vertical Centrifugal Casting -- Sliding Wear -- Taguchi -- SEM; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2020.11.023
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: This paper focuses on the synthesis and wear behaviour of functionally graded hybrid composites. In this article, Vinyl ester, Milled E-glass fiber and graphite are used as matrix and reinforcing materials, respectively. Functionally graded materials are synthesized by vertical centrifugal casting method. The tribological characteristics of the composites are evaluated according to the ASTM standard. The results of experimental sliding wear tests show that wear rate per unit normal load increase with increasing the applied load and sliding distance, but after the addition of graphite, the reverse trend with the sliding speed is observed. According to the results of the Taguchi analysis, the optimal values for each control factor are normal load = 35 N, filling content = 2.5% by weight, sliding speed = 0.5 m / s and sliding distance = 500 m. ANOVA analysis indicates the most impacting factor in descending order, Reinforcement P = 0.167 > Normal load P = 0.178 > Sliding speed P = 0.251 > Sliding distance P = 0.334. Microstructural analysis of worn and unworn samples to understand the basic mechanisms of surface friction wear has been carried out by using FE-SEM.