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Journal of Failure Analysis and Prevention

, Volume 12, Issue 6, pp 683–688 | Cite as

Nondestructive Estimation of Remaining Fatigue Life: Thermography Technique

  • M. Amiri
  • M. M. Khonsari
Technical Article---Peer-Reviewed

Abstract

A technique for the estimation of remaining fatigue life (RFL) of metallic specimens when subjected to cyclic load is presented. The procedure includes evaluation of thermal response of the metal and its correlation with the fatigue life. Results are presented for a series of fully reversed fatigue tests with Stainless Steel 304L at room temperature. It is demonstrated that the slope of temperature rise as a function of time is a good candidate for estimation of RFL. Once the temperature slope is measured, the remaining useful life of the specimen can be effectively estimated.

Keywords

Remaining fatigue life Nondestructive testing Infra-red thermography 

Notes

Acknowledgments

The authors are grateful to one of their colleagues, Mr. Md. Liakat Ali of LSU Center for Rotating Machinery for assistance in performing one of the validation tests reported in this article.

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Copyright information

© ASM International 2012

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringLouisiana State UniversityBaton RougeUSA

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