Turbomachinery condition monitoring and failure prognosis

Pusey Henry C.

Abstract:
This article provides a broad overview of developments and progress in condition monitoring, diagnostics and failure prognosis technology applicable to high performance turbomachines. An assessment is made of current technological capabilities in this critical area. Selected maintenance philosophies, including Condition Based Maintenance, Reliability Centered Maintenance and Profit Centered Maintenance are discussed. Available diagnostic technologies applicable to condition monitoring of turbomachinery are described. Some observations on technological gaps and problems yet to be solved are presented; available information resources and organizations with active related programs are identified. In a 1969 monograph, Loewy stated that the first published work on the dynamics of rotating shafts was by Rankine in 1869. Loewy also said that Gunterpointed out that Rankine's neglect of Coriolis acceleration led to erroneous conclusions which confused engineers for half a century. Loewy suggested in 1969 that confusion still existed, in otherwise knowledgeable circles, about many aspects of rotor dynamics. In his book, he identified more than 550 references on this topic in the open literature; today there are undoubtedly thousands of technical publications relating to the dynamics of rotating machinery. In my view, this is evidence that many difficult problems have been solved over the last three decades. At the same time new breakthroughs continue to advance the technology.

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