Imperial College London
Alternate

DrChristophSchwingshackl

Faculty of Engineering, Department of Mechanical Engineering

Reader in Mechanical Engineering
 
 
 
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Contact

 

+44 (0)20 7594 1920c.schwingshackl Website

 
 
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Location

 

559City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Pesaresi:2017:10.1007/978-3-319-54930-9_9,
author = {Pesaresi, L and Stender, M and Ruffini, V and Schwingshackl, CW},
doi = {10.1007/978-3-319-54930-9_9},
pages = {93--101},
publisher = {Springer},
title = {DIC measurement of the kinematics of a friction damper for turbine applications},
url = {http://dx.doi.org/10.1007/978-3-319-54930-9_9},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - High cycle fatigue (HCF) caused by large resonant stresses is a common cause for turbine blades failure. Passive damping systems, such as friction dampers are often used by aero-engine manufacturers to reduce the resonant stresses and mitigate the risk of HCF. The presence of friction dampers makes the dynamics of the system highly nonlinear, due to the complex stick-slip and separation phenomena taking place at the contact interface. Due to this nonlinear behaviour, an accurate understanding of the operating deflection shapes is needed for an accurate stress prediction.In this study, digital image correlation (DIC) in combination with a high speed camera is used to provide insights into the kinematics of the damper in a recently developed test rig. The in-phase and out-of-phase first bending modes of the blades were investigated leading to a full field measurement of the global ODS of the blades, and the local motion of the damper against its platforms. A significant change in the blades operational deflection shape could be observed due to the damper, and the sliding and rolling motion of the damper during a vibration cycle was accurately visualised.
AU  - Pesaresi,L
AU  - Stender,M
AU  - Ruffini,V
AU  - Schwingshackl,CW
DO  - 10.1007/978-3-319-54930-9_9
EP  - 101
PB  - Springer
PY  - 2017///
SN  - 2191-5644
SP  - 93
TI  - DIC measurement of the kinematics of a friction damper for turbine applications
UR  - http://dx.doi.org/10.1007/978-3-319-54930-9_9
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000426193100009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
ER  -
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