日本機械学会論文集 C編
Online ISSN : 1884-8354
Print ISSN : 0387-5024
クラックロータの横振動 : 振動診断と解析結果の例
稲垣 泰一平林 正志
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1990 年 56 巻 523 号 p. 582-588

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Our previous paper reported the fundamental dynamic characteristics of cracked rotors, crack detection methods by static tests, and a numerical vibration-analysis method of general cracked rotors. This paper describes an example of the diagnosis of a cracked rotor based on former results. A wind-tunnel fan showed a large 2N vibration at 465rpm and was inferred to have a crack from the excitation test, and a shaft crack was detected. The analysis of natural frequencies and responses of the cracked rotor shows the adequateness of the method.

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