Investigation of fretting fatigue in turbine fir tree blade to disc joints at high temperature

Investigation of fretting fatigue in turbine fir tree blade to disc joints at high temperature

Fretting fatigue is the phenomenon of combined contact and fatigue loads which may accelerate crack initiation and reduce the operational life of components. One of the most relevant problems of fretting fatigue occurs in the blade to disc assemblies, particularly those in the hot stages of gas turb...

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Main Author: Fleury, Rodolfo Miguel Nogueira
Other Authors: Nowell, David ; Hills, David
Published: University of Oxford 2015
Subjects:
621.406
Online Access:https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.714037
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spelling ndltd-bl.uk-oai-ethos.bl.uk-7140372018-09-05T03:34:53ZInvestigation of fretting fatigue in turbine fir tree blade to disc joints at high temperatureFleury, Rodolfo Miguel NogueiraNowell, David ; Hills, David2015Fretting fatigue is the phenomenon of combined contact and fatigue loads which may accelerate crack initiation and reduce the operational life of components. One of the most relevant problems of fretting fatigue occurs in the blade to disc assemblies, particularly those in the hot stages of gas turbines. The 'fir-tree' blade to disc assemblies in gas turbines operate at extreme conditions of loading and temperature, and the presence of multiple frictional contact points, often interacting with other stress concentrators, makes it an extremely challenging problems in solid mechanics. This thesis focus on two aspects of the problem found in 'fir-tree' assemblies: i) what is the impact of using single-crystal blades on the contact tractions and fretting fatigue behaviour; and ii) what is the effect of edge rounding on the contact tractions between the blade and disc?621.406University of Oxfordhttps://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.714037https://ora.ox.ac.uk/objects/uuid:9c030512-cc59-46f0-bd88-e81d85dedd4bElectronic Thesis or Dissertation
collection NDLTD
sources NDLTD
topic 621.406
spellingShingle 621.406
Fleury, Rodolfo Miguel Nogueira
Investigation of fretting fatigue in turbine fir tree blade to disc joints at high temperature
description Fretting fatigue is the phenomenon of combined contact and fatigue loads which may accelerate crack initiation and reduce the operational life of components. One of the most relevant problems of fretting fatigue occurs in the blade to disc assemblies, particularly those in the hot stages of gas turbines. The 'fir-tree' blade to disc assemblies in gas turbines operate at extreme conditions of loading and temperature, and the presence of multiple frictional contact points, often interacting with other stress concentrators, makes it an extremely challenging problems in solid mechanics. This thesis focus on two aspects of the problem found in 'fir-tree' assemblies: i) what is the impact of using single-crystal blades on the contact tractions and fretting fatigue behaviour; and ii) what is the effect of edge rounding on the contact tractions between the blade and disc?
author2 Nowell, David ; Hills, David
author_facet Nowell, David ; Hills, David
Fleury, Rodolfo Miguel Nogueira
author Fleury, Rodolfo Miguel Nogueira
author_sort Fleury, Rodolfo Miguel Nogueira
title Investigation of fretting fatigue in turbine fir tree blade to disc joints at high temperature
title_short Investigation of fretting fatigue in turbine fir tree blade to disc joints at high temperature
title_full Investigation of fretting fatigue in turbine fir tree blade to disc joints at high temperature
title_fullStr Investigation of fretting fatigue in turbine fir tree blade to disc joints at high temperature
title_full_unstemmed Investigation of fretting fatigue in turbine fir tree blade to disc joints at high temperature
title_sort investigation of fretting fatigue in turbine fir tree blade to disc joints at high temperature
publisher University of Oxford
publishDate 2015
url https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.714037
work_keys_str_mv AT fleuryrodolfomiguelnogueira investigationoffrettingfatigueinturbinefirtreebladetodiscjointsathightemperature
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