Effects of blade curvature on fatigue life of nickel-based single crystal structures with film-cooling holes

Zhixun Wen, Yamin Zhang, Youliang Li, Zhufeng Yue

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The curved thin-walled structures of multi film-cooling holes with different curvatures were adopted to simulate film-cooling turbine blades. The low cycle fatigue (LCF) characteristic was studied based on the theory of crystallographic slip damage. Results show that there is obvious stress interference among cooling holes. Two slip bands around the holes were found linear at approximately 45° and 135° to the loading axis. The maximum resolved shear stress reduces with the increase of curvature radius. Meanwhile, the LCF life positively increases with the changing of curvature radius. When curvature radius is less than 13 mm, it makes a remarkable effect on the resolved shear stress and LCF life; however, when the curvature radius exceeds 13 mm, it can be replaced by the plate structure. Furthermore, an exponential curve is found fitting for the relation between the curvature radius and the logarithmic fatigue life.

Original languageEnglish
Title of host publicationMechanical and Creep Behavior of Advanced Materials - A SMD Symposium Honoring Prof. K. Linga Murty
EditorsYuntian T. Zhu, Peter K. Liaw, Stuart A. Maloy, Indrajit Charit
PublisherSpringer International Publishing
Pages207-215
Number of pages9
ISBN (Print)9783319510965
DOIs
StatePublished - 2017
EventInternational Symposium on Mechanical and Creep Behavior of Advanced Materials: A SMD Structural Materials Division and Symposium Honoring Prof. K. Linga Murty, TMS 2017 - San Diego, United States
Duration: 26 Feb 20172 Mar 2017

Publication series

NameMinerals, Metals and Materials Series
VolumePart F2
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

ConferenceInternational Symposium on Mechanical and Creep Behavior of Advanced Materials: A SMD Structural Materials Division and Symposium Honoring Prof. K. Linga Murty, TMS 2017
Country/TerritoryUnited States
CitySan Diego
Period26/02/172/03/17

Keywords

  • Curvature
  • Fatigue life
  • Film cooling
  • Single crystal
  • Turbine blade

Fingerprint

Dive into the research topics of 'Effects of blade curvature on fatigue life of nickel-based single crystal structures with film-cooling holes'. Together they form a unique fingerprint.

Cite this