Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Experimental Determination of Entropy and Exergy in Low Cycle Fatigue

Version 1 : Received: 17 May 2019 / Approved: 20 May 2019 / Online: 20 May 2019 (12:28:02 CEST)
Version 2 : Received: 10 November 2019 / Approved: 13 November 2019 / Online: 13 November 2019 (10:28:55 CET)

How to cite: Ribeiro, P.; Petit, J.; Gallimard, L. Experimental Determination of Entropy and Exergy in Low Cycle Fatigue. Preprints 2019, 2019050250. https://doi.org/10.20944/preprints201905.0250.v1 Ribeiro, P.; Petit, J.; Gallimard, L. Experimental Determination of Entropy and Exergy in Low Cycle Fatigue. Preprints 2019, 2019050250. https://doi.org/10.20944/preprints201905.0250.v1

Abstract

Recent works in mechanical fatigue consider that a threshold of entropy exists, the fracture fatigue entropy. The determination of this quantity is usually done considering empirical models for the mechanical power estimation. In this paper, we experimentally observe the existence of a threshold of entropy and exergy in low cycle fatigue for a flat Al-2024 specimen avoiding the use of a model, solely measuring the heat generated during a fatigue test. Results are then compared considering various hypotheses (1D heat dissipation with convection and radiation considered as heat sources, and, heat transfer from a fin with convection and radiation as boundary conditions) to an empirical mechanical model known in the literature and deviations between them are discussed.

Keywords

Fracture Fatigue Entropy ; Thermography ; Exergy

Subject

Engineering, Mechanical Engineering

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.