Study of Vibrational Response of a Rotary System with Defective Rolling Element Bearing

Abstract

Vibration issues pose major concern in rotating machinery. Rolling Element Bearing (REB) defect is one of the sources of vibration in rotating machinery. It causes serious threat to machine life and catastrophic failure of the instrument. This work is an effort to study experimentally, vibration characteristics of a mechanical system, associated with REB defects. Vibration signals are detected using an accelerometer mounted on one of the bearing housings. FFT signals obtained indicates steady state response for healthy and damaged condition of bearings under operating parameters. The results indicate that as the number of defects in bearing increases, vibration characteristics increase significantly.

Experimental Investigation on Zirconia Reinforced Aluminium 6061 Metal Matrix Composite

“…The most popular material for making metal matrix materials, among the several types of matrix materials for composites, is aluminium and its alloys. Due to their processing versatility, low density, wide range and abundant availability of aluminium alloybased composites, as well as their high thermal conductivity, high wear resistance, high heat treatment capability, high strength, improved elastic modulus, high stiffness and high dimensional stability, make them very alluring [14][15][16]. In recent years, the use of aluminium based MMCs as engineering materials has increased.…”