The effect of different reinforcement material on mechanical and tribological properties of composite friction brake was studied. This paper aims to investigate the effect of rockwool and glass fiber on specific wear rate, friction coefficient, and flexural strength of composite. Composite specimens were manufactured utilizing a sequential processing as follows: mixing of composite ingredients, cold pressing of the mixture, hot pressing of the preformed specimen, and then post curing of the hot molded specimen. Hot press was carried out under a pressure of 20 MPa at 160 °C. Friction characteristics of composite were measured using pin on disc tribometer. Three-point bending test was carried out to obtain composite flexural strength. The results showed that rockwool had a higher effect on increasing coefficient of friction, specific wear and flexural strength of composite compared to glass fiber. Fiber fracture, fiber pull-out and void were found on the fracture surface of the bending test specimens.

Topics
Friction, Tribology, Composite materials, Metallurgy
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