In this study, a functionally gradient iron-based brake pad material was developed and the tribological behavior was studied. The functionally gradient specimen had more copper near the base plate and more abrasives towards the top, which provides excellent joint strength and serves the purpose of braking, respectively. The layers had a hybrid composition of metallic materials (Fe, Cu), and abrasives (silicon carbide and aluminum oxide) to improve the strength, wear resistance, and toughness. Graphite was added to stabilize the specimen's thermal and friction characteristics at high temperature. The microstructure, wear rate, and friction coefficient of the functionally gradient specimen and the conventionally sintered specimen were evaluated. The results indicate that the wear resistance of the functionally gradient specimen is higher than the wear resistance of conventional specimen.
This research work has mainly concentrated on the difficulty of the movement of 3 axes on a modern trailer and hence a suitable arrangement has been designed such that the materials can be unloaded from the trailer in three axes without application of any impact force. Our survey is in the regard of several automobile industries that revealed some facts which are most likely difficult methods that were adopted in weighing load especially in difficulties of unloading the materials from the trailer. It is difficult to unload the materials in small, compact streets and roads; therefore, in our project these issues are rectified to unload the trailer in all three sides with ease. The control valve of the trailer is activated manually and hence the compressed air passes to the pneumatic cylinder through the valve. The ram of the pneumatic cylinder acts as a lifting arm of the trailer cabin. This project also focuses on application of self-load weighing such that the material loading and unloading weight display is viewed to cross check while unloading. The automobile engine drive is coupled to the compressor engine, so that it stores the compressed air when the vehicle is running. This compressed air is used to activate the pneumatic cylinder when the valve is activated. Also, rotation of the trailer is done with the help of gear drive system operated by the motor. The whole mechanism is controlled by the operator or driver which is near the driving seat that helps them to operate safely and easily.
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