(Received 30 September 2016; accepted 10 January 2017)
Published Online: 22 February 2017
CODEN: MPCACD
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Present work utilizes agricultural by-product, walnut shell, as reinforcing filler in epoxy matrix for investigating dry sliding wear behavior using a pin-on disc wear-testing machine. Effects of sliding velocity (0.5–1.5 m/s), normal load (10–50 N), sliding distance (1000–3000 m) and filler content (10–30 wt. %) on wear rate (Wt), specific wear rate (Ws) and coefficient of friction (μ) are investigated. The experiments were planned as per design of the experiments scheme and the wear characteristics were analyzed through response surface modeling (RSM) method. The lowest Wt of 1.1 mm3/km was noted for 1.5 m/s sliding velocity with 30-wt. % filler content. Sliding distance did not have a significant influence on Ws above a critical load of 40 N. The minimum μ was observed at 1-m/s sliding velocity, 40-N load, 1000-m sliding distance, and 30-wt. % filler. Lower values of Wt and μ at higher walnut-shell loadings support feasibility of using such composites in wear-prone applications. The wear mechanism was determined in the composites using extensive scanning electron microscopic observations.
Author Information:
Doddamani, M.
Advanced Manufacturing Laboratory, Dept. of Mechanical Engineering, National Inst. of Technology, Surathkal, Karnataka
Parande, G.
BVB College of Engineering and Technology, Hubli, Karnataka
Manakari, V.
BVB College of Engineering and Technology, Hubli, Karnataka
Siddhalingeshwar, I. G.
BVB College of Engineering and Technology, Hubli, Karnataka
Gaitonde, V. N.
BVB College of Engineering and Technology, Hubli, Karnataka
Gupta, N.
Composite Materials and Mechanics Laboratory, Mechanical and Aerospace Engineering Dept., Tandon School of Engineering, New York Univ., Brooklyn, NY
Stock #: MPC20160113
ISSN:2165-3992
DOI: 10.1520/MPC20160113
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