The influence of spot overlap and laser flence on the high cycle fatigue (HCF) strength of aircraft engine fan blades

Magdi N. Azer, Doug Scheidt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

One way to measure the benefit of Laser Shock Peening (LSP) is to perform high cycle fatigue (HCF) testing of engine components that have undergone LSP. In a production environment, there is an additional constraint that the LSP process must prove itself stable over time. During development of LSP at GE, numerous studies were carried out to identify the factors that affect HCF strength. Based on these studies, six production processes have been introduced over the last seven years. In this article, a study of the influence of LSP spot overlap and laser fluence on HCF strength is presented. Finally, a geometric scaling parameter that relates HCF strength to spot overlap is proposed as a means of predicting HCF benefit for various engine components.

Original languageEnglish (US)
Title of host publicationICALEO 2004 - 23rd International Congress on Applications of Laser and Electro-Optics, Congress Proceedings
PublisherLaser Institute of America
ISBN (Print)0912035773, 9780912035772
DOIs
StatePublished - 2004
Externally publishedYes
EventICALEO 2004 - 23rd International Congress on Applications of Laser and Electro-Optics - San Francisco, CA, United States
Duration: Oct 4 2004Oct 7 2004

Publication series

NameICALEO 2004 - 23rd International Congress on Applications of Laser and Electro-Optics, Congress Proceedings

Conference

ConferenceICALEO 2004 - 23rd International Congress on Applications of Laser and Electro-Optics
CountryUnited States
CitySan Francisco, CA
Period10/4/0410/7/04

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Electrical and Electronic Engineering

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