Damage monitoring of surface treated steel under severe rolling contact loading conditions

Research output: Contribution to journalArticlepeer-review


The aim of this study has been to investigate the rolling contact behaviour of plasma nitrided and duplex treated (plasma nitrided and diamond-like carbon (DLC)) EN40B steel under overloading and intermittent lubricating conditions using the acoustic emission technique (AE). The signal amplitude and energy were monitored and related to cracking and delamination events observed from scanning electron micrographs. AE technique was found to be capable of detecting cracking and delamination on both surface treatments, proving to be a useful tool for monitoring rotating machinery condition effectively.


Original languageEnglish
Article number106257
Number of pages9
JournalTribology International
Early online date14 Feb 2020
Publication statusPublished - Jun 2020


  • Acoustic emission, Diamond-like carbon, Plasma nitriding, Rolling contact