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Probabilistic Assessment of Failure Risk in Gas Turbine Discs
Linköping University, Department of Management and Engineering.
2008 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Gas turbine discs are heavily loaded due to centrifugal and thermal loads and are therefore designed for a service lifetime specified in hours and cycles. New probabilistic design criteria have been worked out at Siemens Industrial Turbomachinery AB and this report is intended to evaluate if existing turbine discs meet the new design criteria. The evaluation is composed of two tasks, estimation of failure risk and investigation of which parameters that have large effect on the results.

The outcome from the evaluations show that the failure risks are smaller than the maximum failure risks allowed in the design criteria. Further, creep strain rate, temperature and creep rupture strain are identified to have large effect on the results in the first case. In the second case blade load and other mechanical loads as well as yield stress show large effect on the results.

Place, publisher, year, edition, pages
2008. , 40 p.
Keyword [en]
Failure Risk in Gas Turbine Discs
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:liu:diva-15909ISRN: LIU-IEI-TEK-A--08/00496--SEOAI: oai:DiVA.org:liu-15909DiVA: diva2:128190
Subject / course
Solid Mechanics
Presentation
A36, Linköping (Swedish)
Uppsok
Technology
Supervisors
Examiners
Available from: 2009-01-23 Created: 2008-12-14 Last updated: 2011-08-23Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf