Understanding Thermo-Mechanical Fatigue

John Allport, Mike Eastwood

Research output: Contribution to specialist publicationArticle

Abstract

Turbine housings have a difficult life. The exhaust gases passing through them may be over 700°C, whereas the surrounding air is only around 90°C giving a thermal gradient across the turbine housing walls. However, at low engine powers, the exhaust gas is much cooler giving a temperature range of 600°C during some duty cycles. It is this cycling of exhaust temperature that incurs stresses in the turbine housing, which must be carefully considered at the design stage.
Original languageEnglish
Pages3 - 4
Number of pages2
No.8
Specialist publicationHTi Magazine
PublisherCummins Turbo Technologies
Publication statusPublished - 2007

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