Experimental Determination of Entropy and Exergy in Low Cycle Fatigue Article Swipe

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Patrick Ribeiro , Johann Petit , L. Gallimard ·

YOU? · · 2019 · Open Access · · DOI: https://doi.org/10.20944/preprints201905.0250.v1

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.

Related Topics

Convection

Heat Transfer

Laws Of Thermodynamics

Materials Science

Mathematics

Physics

Mathematical Analysis

Composite Material

Concepts

Exergy Dissipation Entropy (arrow of time) Convection Heat transfer Low-cycle fatigue Mechanics Thermodynamics Laws of thermodynamics Boundary value problem Materials science Mathematics Physics Mathematical analysis Composite material Non-equilibrium thermodynamics

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Type: preprint
Language: en
Landing Page: https://doi.org/10.20944/preprints201905.0250.v1
PDF: https://www.preprints.org/manuscript/201905.0250/v1/download
OA Status: green
References: 31
Related Works: 10
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DOI: https://doi.org/10.20944/preprints201905.0250.v1

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Title: Experimental Determination of Entropy and Exergy in Low Cycle Fatigue

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Type: preprint

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Language: en

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Publication year: 2019

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Publication date: 2019-05-20

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Authors: Patrick Ribeiro, Johann Petit, L. Gallimard

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Landing page: https://doi.org/10.20944/preprints201905.0250.v1

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Concepts: Exergy, Dissipation, Entropy (arrow of time), Convection, Heat transfer, Low-cycle fatigue, Mechanics, Thermodynamics, Laws of thermodynamics, Boundary value problem, Materials science, Mathematics, Physics, Mathematical analysis, Composite material, Non-equilibrium thermodynamics

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