Browsing by Author "Mialkowski, Piotr"
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Mialkowski, Piotr (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)This case study presents the RCA of cracks in water cooling manifolds of a 300MW gas turbine. The cause of the failure was a natural frequency of the manifold excited by a self excited rotor axial vibration due to excessive ...
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Mialkowski, Piotr; Peton, Nicolas; Popaleny, Peter (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)This tutorial demonstrates some aspects of rotating machinery diagnostics where there is an apparent difference between the actual response of a machine and its expected behavior for a certain type of malfunction as typically ...
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Mialkowski, Piotr; Peton, Nicolas (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)This case history describes the investigation of the source of unstable behavior of a newly commissioned single-shaft, combined cycle, power generator unit. The source was found to be nonlinear operation of the flexible ...
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Mialkowski, Piotr (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)This 15 MW steam turbine/gearbox/4-pole generator train, following a recent overhaul, was showing unusual phenomenon of high level 0.9X vibration during shutdown, as well as power limits due to vibration level increase. ...