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EnglishThe capability of early stage detection of a defect is gaining more and more importance because it can help the maintenance process, the cost reduction and the reliability of the systems. The increment of vibration amplitude is a well-known method for evaluating the damage of a component, but it is sometimes difficult to understand the exact level of damage. In other words, the amplitude of vibration cannot be directly connected to the dimension of the defect. In the present paper, based on a non-Hertzian contact algorithm, the spectrum of the pressure distribution in the contact surface between the race and the rolling element is evaluated. Such spectrum is then compared with the acquired spectrum of a vibration response of a defected bearing. The bearing vibration pattern was previously analyzed with monitoring techniques to extract all the damage information. The correlation between the spectrum of the pressure distribution in the defected contact surface and the analyzed spectrum of the damaged bearing highlights a strict relationship. By using that analysis, a precise correlation between defect aspect and dimension and vibration level can be addressed to estimate the level of damaging.
A proposal of a technique for correlating defect dimensions to vibration amplitude in bearing monitoring / Brusa, Eugenio; Bruzzone, Fabio; Delprete, Cristiana; Di Maggio, Luigi Gianpio; Rosso, Carlo. - ELETTRONICO. - 5(2020), pp. 1-14. ((Intervento presentato al convegno 5th European Conference of the Prognostics and Health Management Society tenutosi a Virtual conference nel 27-31 July 2020.
| Titolo: | A proposal of a technique for correlating defect dimensions to vibration amplitude in bearing monitoring | |
| Autori: | ||
| Data di pubblicazione: | 2020 | |
| Abstract: | The capability of early stage detection of a defect is gaining more and more importance because i...t can help the maintenance process, the cost reduction and the reliability of the systems. The increment of vibration amplitude is a well-known method for evaluating the damage of a component, but it is sometimes difficult to understand the exact level of damage. In other words, the amplitude of vibration cannot be directly connected to the dimension of the defect. In the present paper, based on a non-Hertzian contact algorithm, the spectrum of the pressure distribution in the contact surface between the race and the rolling element is evaluated. Such spectrum is then compared with the acquired spectrum of a vibration response of a defected bearing. The bearing vibration pattern was previously analyzed with monitoring techniques to extract all the damage information. The correlation between the spectrum of the pressure distribution in the defected contact surface and the analyzed spectrum of the damaged bearing highlights a strict relationship. By using that analysis, a precise correlation between defect aspect and dimension and vibration level can be addressed to estimate the level of damaging. | |
| ISBN: | 978-1-936263-32-5 | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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