Life estimation by varying the critical plane orientation in the modified Carpinteri-Spagnoli criterion

The modified Carpinteri-Spagnoli (C-S) criterion is a multiaxial high-cycle fatigue criterion based on the critical plane approach. According to such a criterion, the orientation of the critical plane is linked to both the averaged directions of the principal stress axes and the fatigue properties o...

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Main Authors: Camilla Ronchei, Andrea Carpinteri, Giovanni Fortese, Andrea Spagnoli, Sabrina Vantadori, Marta Kurek, Tadeusz ?agoda
Format: Article
Language:English
Published: Gruppo Italiano Frattura 2015-09-01
Series:Fracture and Structural Integrity
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Online Access:https://212.237.37.202/index.php/fis/article/view/1558
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author Camilla Ronchei
Andrea Carpinteri
Giovanni Fortese
Andrea Spagnoli
Sabrina Vantadori
Marta Kurek
Tadeusz ?agoda
author_facet Camilla Ronchei
Andrea Carpinteri
Giovanni Fortese
Andrea Spagnoli
Sabrina Vantadori
Marta Kurek
Tadeusz ?agoda
author_sort Camilla Ronchei
collection DOAJ
description The modified Carpinteri-Spagnoli (C-S) criterion is a multiaxial high-cycle fatigue criterion based on the critical plane approach. According to such a criterion, the orientation of the critical plane is linked to both the averaged directions of the principal stress axes and the fatigue properties of the material. The latter dependence is taken into account through a rotational angle, ?. Then, the multiaxial fatigue strength estimation is performed by computing an equivalent stress amplitude on the critical plane. In the present paper, some modifications of the original ? expression are implemented in the modified C-S criterion. More precisely, such modified expressions of ? depend on the ratio between the fatigue limit under fully reversed shear stress and that under fully reversed normal stress (in accordance with the original expression), and can be employed for metals ranging from mild to very hard fatigue behaviour. Some experimental data available in the literature are compared with the theoretical results in order to verify if the modified ?expressions are able to improve the fatigue strength estimation capability of the modified C-S criterion.
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institution Kabale University
issn 1971-8993
language English
publishDate 2015-09-01
publisher Gruppo Italiano Frattura
record_format Article
series Fracture and Structural Integrity
spelling doaj-art-c311a1b1d46f49a78873bd353bd37a902025-01-02T22:44:56ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932015-09-01934Life estimation by varying the critical plane orientation in the modified Carpinteri-Spagnoli criterionCamilla RoncheiAndrea CarpinteriGiovanni ForteseAndrea SpagnoliSabrina VantadoriMarta KurekTadeusz ?agodaThe modified Carpinteri-Spagnoli (C-S) criterion is a multiaxial high-cycle fatigue criterion based on the critical plane approach. According to such a criterion, the orientation of the critical plane is linked to both the averaged directions of the principal stress axes and the fatigue properties of the material. The latter dependence is taken into account through a rotational angle, ?. Then, the multiaxial fatigue strength estimation is performed by computing an equivalent stress amplitude on the critical plane. In the present paper, some modifications of the original ? expression are implemented in the modified C-S criterion. More precisely, such modified expressions of ? depend on the ratio between the fatigue limit under fully reversed shear stress and that under fully reversed normal stress (in accordance with the original expression), and can be employed for metals ranging from mild to very hard fatigue behaviour. Some experimental data available in the literature are compared with the theoretical results in order to verify if the modified ?expressions are able to improve the fatigue strength estimation capability of the modified C-S criterion.https://212.237.37.202/index.php/fis/article/view/1558Constant amplitude loading
spellingShingle Camilla Ronchei
Andrea Carpinteri
Giovanni Fortese
Andrea Spagnoli
Sabrina Vantadori
Marta Kurek
Tadeusz ?agoda
Life estimation by varying the critical plane orientation in the modified Carpinteri-Spagnoli criterion
Fracture and Structural Integrity
Constant amplitude loading
title Life estimation by varying the critical plane orientation in the modified Carpinteri-Spagnoli criterion
title_full Life estimation by varying the critical plane orientation in the modified Carpinteri-Spagnoli criterion
title_fullStr Life estimation by varying the critical plane orientation in the modified Carpinteri-Spagnoli criterion
title_full_unstemmed Life estimation by varying the critical plane orientation in the modified Carpinteri-Spagnoli criterion
title_short Life estimation by varying the critical plane orientation in the modified Carpinteri-Spagnoli criterion
title_sort life estimation by varying the critical plane orientation in the modified carpinteri spagnoli criterion
topic Constant amplitude loading
url https://212.237.37.202/index.php/fis/article/view/1558
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AT andreaspagnoli lifeestimationbyvaryingthecriticalplaneorientationinthemodifiedcarpinterispagnolicriterion
AT sabrinavantadori lifeestimationbyvaryingthecriticalplaneorientationinthemodifiedcarpinterispagnolicriterion
AT martakurek lifeestimationbyvaryingthecriticalplaneorientationinthemodifiedcarpinterispagnolicriterion
AT tadeuszagoda lifeestimationbyvaryingthecriticalplaneorientationinthemodifiedcarpinterispagnolicriterion