Condition monitoring of slow-speed shafts and bearings with Acoustic emission

M. Elforjani, D. Mba

    Research output: Contribution to journalArticlepeer-review

    23 Citations (Scopus)


    For various rotating machinery applications, condition monitoring using high-frequency Acoustic emission (AE) technology has remained a subject of intense study since the late 1960s. This paper demonstrates the results of an investigation for detecting and monitoring natural crack initiation and propagation in slow-speed rotating machinery with the AE technology. In addition to highlighting previous work published by the authors [1-3] on condition monitoring of slow-speed rotating machinery, this paper presents experimental results on accelerated bearing fatigue under starved lubricating conditions. For these investigations, purpose-built test rigs were employed for generating natural degradation on both a bearing and a shaft. It is concluded that crack initiation and propagation on slow-speed bearings and shafts can be detected with the AE technology.

    Original languageEnglish
    Pages (from-to)350-363
    Number of pages14
    Issue numberSUPPL. 2
    Publication statusPublished - 19 Aug 2010


    • acoustic emissions
    • condition monitoring
    • natural cracks
    • rotating machinery
    • slow speed


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