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research-article

A New Damage Diagnostic Approach for Deep Groove Ball Bearings having Localized Surface Defects in the Raceways

[+] Author and Article Information
Imran Jamadar

Department of Mechanical Engineering, S. V. National Institute of Technology, [SVNIT], Icchahanath, Surat-395007, Gujarat, India
imranjamadar2@gmail.com

Dipakkumar Vakharia

Department of Mechanical Engineering, S. V. National Institute of Technology, [SVNIT], Icchahanath, Surat-395007, Gujarat, India
vakharia@med.svnit.ac.in

1Corresponding author.

ASME doi:10.1115/1.4036630 History: Received January 25, 2016; Revised April 05, 2017

Abstract

This paper presents mathematical expressions to identify the existence of localized surface defects on the raceways of the deep groove ball bearings. For the formulation of the mathematical expressions, matrix method of dimensional analysis based on FLT? system of unis is used. The model is based on the complete set of physical dimensions and operating parameters of the deep groove ball bearing in that the spall size is directly allied with vibration responses. The formulated governing model equations are solved numerically applying a scheme of empirical modeling through multiple factorial regression analysis. Experiments are performed on the laboratory test rig to verify the results obtained from the developed model equations. For the experiments deep groove ball bearings designated as SKF 6307 are used. These bearings are having artificially induced square shaped surface defects of different sizes on the outer and inner races and are analyzed for different operating speeds. A good similarity between the predicted numerical values and the experimental results is noticed. This study showed that the proposed methodology can be successfully used for the characterization of the localized surface defects on the raceways of the deep groove ball bearings.

Copyright (c) 2017 by ASME
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