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Traditional methods of noise control in most application are by using absorption and barrier techniques. These involve brackets & clamps for assembly, carrier material to hold absorbing materials. Usage of absorbing materials which could be high, as this is based on noise control technique by allowing source to produce noise and hence the cost is also higher. Based on the survey, several demerits have been studied in using absorption and barrier noise control techniques in the field of an automobile application. This paper deals with the noise control by using the application of free layer damping technique thereby overcoming the demerits happening in using former techniques, helping better control of noise in the environment and solutions which are more durable. The methodology followed here before going for the FLD application is identification of noise radiating components which needs to be damped in a system or subsystem.

Carburizing, austenitic, and boronizing were used to enhance the friction and wear properties of AISI 1080 and 1566 steel surfaces. They were subjected to austenitic, solid boronizing, liquid and gaseous carburizing processes. An examination done and observed the microstructure, X-ray diffraction patterns, and hardness distributions of the material. For the wear testing, pin-on-disc specimen topologies were employed, and removal efficiencies were estimated based on the sliding distance and the required force applied. In addition, the abrasiveness of the sample surfaces was assessed. The heat treatment capacity of AISI 1020 steel was investigated and compared to the heat treatment capabilities of other steel samples to establish how much heat can be applied to the steel.