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On the relationship between mechanical energy rate and heat dissipated rate during fatigue for a C45 steel depending on stress ratio
  • Rosa De Finis,
  • Davide Palumbo,
  • Umberto Galietti
Rosa De Finis
Politecnico di Bari
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Davide Palumbo
Politecnico di Bari
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Umberto Galietti
Politecnico di Bari
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Abstract

This work deals with the analysis in the frequency domain of the temperature signal and mechanical energy rate of C45 steel under two different fatigue stepwise loading series at stress ratios of 0.1 and -1. It was first investigated the energy distribution among the harmonic components of the signals to understand possible variations caused by a different stress ratio. In addition, the second amplitude harmonic (SAH) of heat dissipated and mechanical energy rates have been considered in the analysis and their relationship was investigated. It has been shown as it depends only on the material, hence it is valid whatever the kind of the test is without any assumption on the energy supplied to the material or material hysteresis loop stabilisation. The adopted approach allows the analysis of intrinsic dissipations by means of rapid, full-field and contactless techniques without any specific requirement on loading condition or temperature signal stabilisation.

Peer review status:IN REVISION

12 May 2021Submitted to Fatigue & Fracture of Engineering Materials & Structures
12 May 2021Assigned to Editor
12 May 2021Submission Checks Completed
14 May 2021Reviewer(s) Assigned
04 Jun 2021Review(s) Completed, Editorial Evaluation Pending
11 Jun 2021Editorial Decision: Revise Major
19 Jun 20211st Revision Received