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Friction lining materials should possess high coefficient of friction at the same time should have high wear resistance. Moreover, it should be stable at elevated temperature encountered due to sliding friction. One has to think of many functional requirements in order to develop a friction material, which gives motivation to optimize the friction materials for multiple objectives. In this work, three variant (CSP0, CSP15 and CSP30) of friction lining materials with nano-coconut shell powder are developed and subjected chase friction testing. Specimen preparation is done at Universal brakes Jalgaon (MS, India) and Chase friction test is conducted at Indian Friction Material Engineering Company, Delhi (India). The results of the test are then used in multi-objective decision making for the selection using Grey Relation Analysis (GRA). It is applied based on the temperature sensitivity performance of Coefficient of friction (CoF) of the specimens, through six different criterions in parallel. It is observed that CSP30 has ranked 1 according to GRA with six criterions.

Multi Objective Optimization of Nano-composite Non-asbestos Friction Lining Material using Grey Relation Analysis (GRA)