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Transmission of high frequency vibrations in rotating systems. Application to cavitation detection in hydraulic turbines

Author
Valentin, D.; Presas, A.; Egusquiza, M.; Valero, M.; Egusquiza, E.
Type of activity
Journal article
Journal
Applied sciences
Date of publication
2018-03-16
Volume
8
Number
3
First page
451-1
Last page
451-18
DOI
https://doi.org/10.3390/app8030451 Open in new window
Project funding
FP7-608532-HYPERBOLE - HYDROPOWER PLANTS PERFORMANCE AND FLEXIBLE OPERATION TOWARDS LEAN INTEGRATION OF NEW RENEWABLE ENERGIES
Repository
http://hdl.handle.net/2117/117311 Open in new window
URL
http://www.mdpi.com/2076-3417/8/3/451 Open in new window
Abstract
One of the main causes of damage in hydraulic turbines is cavitation. While not all cavitation appearing in a turbine is of a destructive type, erosive cavitation can severely affect the structure, thus increasing maintenance costs and reducing the remaining useful life of the machine. Of all types of cavitation, the maximum erosion occurs when clouds of bubbles collapse on the runner surface (cloud cavitation). When this occurs it is associated with a substantial increase in noise, and vibratio...
Citation
Valentin, D., Presas, A., Egusquiza, M., Valero, M., Egusquiza, E. Transmission of high frequency vibrations in rotating systems. Application to cavitation detection in hydraulic turbines. "Applied sciences", 16 Març 2018, vol. 8, núm. 3, p. 451-1-451-18.
Keywords
Acoustic emission, Erosive cavitation, High frequency, Hydraulic turbine, Vibration
Group of research
CDIF - Center for Industrial Diagnostics
FLUIDS - Fluids Engineering

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