Journal
ENGINEERING FAILURE ANALYSIS
Volume 40, Issue -, Pages 97-113Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfailanal.2014.02.016
Keywords
Journal bearing; Magnetic bearing; Hybrid bearing; Rotor fracture
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In the present work, the feasibility of hybridizing a magnetic arrangement in the conventional journal bearing system has been experimented for the operating conditions of heavy load and slow speed. A test setup has been developed to perform testing on four types of bearing arrangements: conventional journal bearing arrangement, cylindrical magnetic bearing arrangement, circular arc (180 degrees) magnetic bearing arrangement and a hybrid bearing arrangement. The magnetic levitation force was determined theoretically for these arrangements to identify reasons for the mechanical contact between rotor and stator magnets. The results of the experimental investigations in terms of the weight loss (wear), reduction in the magnetic flux density, acceleration signals, and photographs of worn & fractured rotor are reported. (C) 2014 Elsevier Ltd. All rights reserved.
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