Experimental Investigations to Assess Surface Contact Fatigue Faults in the Rolling Contact Bearings by Enhancement of Sound and Vibration Signals

• Published in: Journal of nondestructive evaluation Vol. 38; no. 1; pp. 1 - 23
• Main Authors: Amarnath, M., Praveen Krishna, I. R.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.03.2019; Springer Nature B.V
• Subjects: Antifriction bearings; Characterization and Evaluation of Materials; Classical Mechanics; Control; Dynamical Systems; Empirical analysis; Engineering; Fault detection; Fault diagnosis; Feature extraction; Mechanical systems; Rolling contact; Rotating machinery; Rotating machines; Rotation; Signal processing; Sliding contact; Solid Mechanics; Sound; Vibration; Vibration measurement; Pitting; Sound; Vibration; Envelope; Bearings
• ISSN: 0195-9298; 1573-4862
• DOI: 10.1007/s10921-019-0571-z

Rolling/sliding contact bearings are one of the fundamental components in almost all rotating machines. The vibration and sound signals of rotating machinery or structure encompass with dynamic information related to operating condition of the mechanical systems. However, these signals generated by structural components contain measurement noises which mask fault related features. Therefore, the vibration and sound signals extracted from rotating machines are supposed to be carefully examined to detect and diagnose faults. This paper presents the applications of the traditional envelope and empirical mode decomposition (EMD) based envelope analyses methods to process vibration and sound signals acquired from the bearing setup. Results highlighted the suitability of EMD based envelope spectra over traditional envelope analysis in detection of bearing fault related features.