@article{oai:nagoya.repo.nii.ac.jp:00007359,
 author = {石田, 幸男 and ISHIDA, Yukio and 劉, 軍 and LIU, Jun and 井上, 剛志 and INOUE, Tsuyoshi and 近藤, 英男 and KONDO, Hideo},
 issue = {714},
 journal = {日本機械学會論文集 C編},
 month = {Feb},
 note = {In order to detect a transverse crack due to fatigue, most of the researches have so far paid attention to resonances of steady-state oscillations due to a crack and proposed diagnosis systems utilizing those vibration phenomena. However, in a practical view point, these diagnosis systems have the following defects: (1)The probability that a resonance due to a crack occurs in the rated speed range is small. (2)It is very dangerous to observe vibration characteristics in resonance ranges spending long time. In this paper, we propose a new method utilizing the changes of vibration phenomena due to a crack in a nonstationary oscillation during start up of a rotating machinery. The advantage of this method is that we can check the signals denoting the occurrence of a crack in a wide speed range by a single sweep and also can avoid the operation in dangerous resonance ranges. Moreover, the validity of the proposed method is shown through numerical simulations and experiments.},
 pages = {316--323},
 title = {非定常振動によるロータのクラックの検出 (不つりあいの方向による非定常振動の最大振幅の変化)},
 volume = {72},
 year = {2006}
}