Volume 43, Issue 3 pp. 515-526
ORIGINAL CONTRIBUTION

Thermography in high cycle fatigue short-term evaluation procedures applied to a medium carbon steel

Zhenjie Teng

Corresponding Author

Zhenjie Teng

Chair of Non-Destructive Testing and Quality Assurance, Saarland University, Saarbrücken, Germany

Department of Materials Sciences and Materials Testing, University of Applied Sciences Kaiserslautern, Kaiserslautern, Germany

Correspondence

Zhenjie Teng, Chair of Non-Destructive Testing and Quality Assurance, Saarland University, Saarbrücken, Germany.

Email: [email protected]

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Haoran Wu

Haoran Wu

Chair of Non-Destructive Testing and Quality Assurance, Saarland University, Saarbrücken, Germany

Department of Materials Sciences and Materials Testing, University of Applied Sciences Kaiserslautern, Kaiserslautern, Germany

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Christian Boller

Christian Boller

Chair of Non-Destructive Testing and Quality Assurance, Saarland University, Saarbrücken, Germany

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Peter Starke

Peter Starke

Chair of Non-Destructive Testing and Quality Assurance, Saarland University, Saarbrücken, Germany

Department of Materials Sciences and Materials Testing, University of Applied Sciences Kaiserslautern, Kaiserslautern, Germany

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First published: 23 October 2019
Citations: 21

Funding information: Deutsche Forschungsgemeinschaft, Grant/Award Number: STA 1133/6-1; China Scholarship Council; German Research Foundation

Abstract

This paper focuses on the fatigue life calculation for an unalloyed medium carbon steel SAE1045 (German DIN-standard: C45E), by applying an energy dissipation-based approach quantified through thermographic measurements. The purpose of this approach is to establish an intrinsic dissipation model and to predict characteristics derived from the cyclic deformation behavior of stress-controlled fatigue tests, eg, the fatigue limit and the S-N data by using simplified (zero-dimensional, 0D) thermodynamic equations. In order to investigate the possibilities for a rapid evaluation while simultaneously reducing the experimental effort, one load increase test (LIT) and two constant amplitude tests (CATs) were carried out. The S-N data evaluated on such a basis is competitive to conventionally determined S-N data as will be shown.

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