Advanced Techniques for the Measure of Microstructure and Residual Stress in Components Subject to Rolling Fatigue

James Thomas; Jonathan Mohan; Stephen Kendrish; Robert M. Fix

doi:10.4271/2009-01-0421

2009-04-20

Advanced Techniques for the Measure of Microstructure and Residual Stress in Components Subject to Rolling Fatigue 2009-01-0421

Demands on loaded, rotating components, e.g., bearings, shafts & gears continue to escalate. Modern manufacturing strategies require improvements in traditional measurements and process control tools.

Traditionally residual stress examination in bearings was accomplished with depth profiles obtained using X-Ray diffraction (XRD) and electrochemical layer removal. More recently Barkhausen Noise Analysis (BNA) has proven itself in the evaluation of microstructure as well as surface residual stress in ferromagnetic materials. Traditional BN analysis parameters have been used for fixed measurement depths, usually near the surface.

This study is an examination on a set of as-hardened and ground bearing rings manufactured with variations in processing. The Barkhausen signal was analyzed to yield information about a range of depths. XRD & BNA depth profiles were gathered and they correlate well. This allows a calibration of the BN signal to the residual stress. It is proposed that BNA can be used for quick, non-destructive assessment of residual stress depth profiles.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Digital $37.00 Print $37.00

We also recommend:

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

Advanced Techniques for the Measure of Microstructure and Residual Stress in Components Subject to Rolling Fatigue 2009-01-0421

SAE MOBILUS