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A practical method to detect a transverse cracked rotor using transient responseWang, Xiaofeng ; Liu, Jun, fizik ; Ge, WeiminTo detect a transverse crack caused by fatigue or creep, most of the research has thus far paid attention only to resonances of steady-state oscillations created by the crack and proposed diagnosis ... systems utilizing these vibration phenomena. However, from a practical view point, these diagnosis systems have the following flaws: (1) the probability that a resonance occurs due to a crack in the rated rotational speed range is a lower position; (2) It is very dangerous to observe vibration characteristics in resonance ranges. In order to solve these problems, this paper uses a practical detection method utilizing the characteristic changes in a transient oscillation during the start-up, the shutdown, or the variable running speeds of rotating machinery. This method has great advantages, because it can check the occurrence signals of a crack in a wide speed range using a single sweep and avoid the operation in dangerous resonance ranges. Non-stationary characteristics during passages through the main resonance and various kinds of resonances are studied numerically and experimentally.Source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Vol. 63, no. 6, June 2017, str. 394-404, SI 55)Type of material - article, component partPublish date - 2017Language - englishCOBISS.SI-ID - 15545115
source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Vol. 63, no. 6, June 2017, str. 394-404, SI 55)
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Wang, Xiaofeng | |
Liu, Jun, fizik | |
Ge, Weimin |
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