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Healing of Fatigue Crack in 1045 Steel by Using Eddy Current Treatment

In order to investigate the methods to heal fatigue cracks in metals, tubular specimens of 1045 steel with axial and radial fatigue cracks were treated under the eddy current. The optical microscope was employed to examine the change of fatigue cracks of specimens before and after the eddy current t...

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Detalles Bibliográficos
Autores principales: Yang, Chuan, Xu, Wenchen, Guo, Bin, Shan, Debin, Zhang, Jian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5509091/
https://www.ncbi.nlm.nih.gov/pubmed/28773761
http://dx.doi.org/10.3390/ma9080641
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author Yang, Chuan
Xu, Wenchen
Guo, Bin
Shan, Debin
Zhang, Jian
author_facet Yang, Chuan
Xu, Wenchen
Guo, Bin
Shan, Debin
Zhang, Jian
author_sort Yang, Chuan
collection PubMed
description In order to investigate the methods to heal fatigue cracks in metals, tubular specimens of 1045 steel with axial and radial fatigue cracks were treated under the eddy current. The optical microscope was employed to examine the change of fatigue cracks of specimens before and after the eddy current treatment. The results show that the fatigue cracks along the axial direction of the specimen could be healed effectively in the fatigue crack initiation zone and the crack tip zone under the eddy current treatment, and the healing could occur within a very short time. The voltage breakdown and the transient thermal compressive stress caused by the detouring of eddy current around the fatigue crack were the main factors contributing to the healing in the fatigue crack initiation zone and the crack tip zone, respectively. Eddy current treatment may be a novel and effective method for crack healing.
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spelling pubmed-55090912017-07-28 Healing of Fatigue Crack in 1045 Steel by Using Eddy Current Treatment Yang, Chuan Xu, Wenchen Guo, Bin Shan, Debin Zhang, Jian Materials (Basel) Article In order to investigate the methods to heal fatigue cracks in metals, tubular specimens of 1045 steel with axial and radial fatigue cracks were treated under the eddy current. The optical microscope was employed to examine the change of fatigue cracks of specimens before and after the eddy current treatment. The results show that the fatigue cracks along the axial direction of the specimen could be healed effectively in the fatigue crack initiation zone and the crack tip zone under the eddy current treatment, and the healing could occur within a very short time. The voltage breakdown and the transient thermal compressive stress caused by the detouring of eddy current around the fatigue crack were the main factors contributing to the healing in the fatigue crack initiation zone and the crack tip zone, respectively. Eddy current treatment may be a novel and effective method for crack healing. MDPI 2016-07-29 /pmc/articles/PMC5509091/ /pubmed/28773761 http://dx.doi.org/10.3390/ma9080641 Text en © 2016 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yang, Chuan
Xu, Wenchen
Guo, Bin
Shan, Debin
Zhang, Jian
Healing of Fatigue Crack in 1045 Steel by Using Eddy Current Treatment
title Healing of Fatigue Crack in 1045 Steel by Using Eddy Current Treatment
title_full Healing of Fatigue Crack in 1045 Steel by Using Eddy Current Treatment
title_fullStr Healing of Fatigue Crack in 1045 Steel by Using Eddy Current Treatment
title_full_unstemmed Healing of Fatigue Crack in 1045 Steel by Using Eddy Current Treatment
title_short Healing of Fatigue Crack in 1045 Steel by Using Eddy Current Treatment
title_sort healing of fatigue crack in 1045 steel by using eddy current treatment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5509091/
https://www.ncbi.nlm.nih.gov/pubmed/28773761
http://dx.doi.org/10.3390/ma9080641
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