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Open AccessArticle

Fatigue Life Appraisal and Its Corrected Stress Intensity Factor for Repaired Off-CentrallyCracked Aluminum Plates

1
Key Laboratory of Deep Underground Science and Engineering (Ministry of Education), School of Architecture and Environment, Sichuan University, Chengdu 610065, China
2
Sichuan Provincial Key Laboratory of Failure Mechanics and Engineering Disaster Prevention & Mitigation, Sichuan University, Chengdu 610065, China
3
Innovation Design Department, Shenzhen Municipal Engineering Design and Research Institute Co. Ltd., Shenzhen 518029, China
*
Authors to whom correspondence should be addressed.
Materials 2020, 13(18), 4014; https://doi.org/10.3390/ma13184014
Received: 27 July 2020 / Revised: 26 August 2020 / Accepted: 31 August 2020 / Published: 10 September 2020
(This article belongs to the Special Issue Research on Fatigue Behavior of Metals and Alloys)
This paper presents an experimental study on the fatigue life estimation of off-centrally cracked aluminum plates. Typical theoretical equations for off-central, central and edge cracks were reviewed and compared in terms of their sensitive parameters and applicability. A finite element model has been validated in its capacity in modelling the influences of eccentricity and crack size on the boundary correction coefficients. The Forman equation has been employed along with numerical results for the prediction of fatigue lives. Based on the test data, the fatigue life results of aluminum plates with and without patched laminate repair have been compared with codified fatigue classes. It is demonstrated that the repair at the crack tip close to the plate edge is effective in the fatigue life improvement for off-centrally crackedaluminum plates. View Full-Text
Keywords: off-central crack; fatigue life; stress intensity factor; fracture mechanics off-central crack; fatigue life; stress intensity factor; fracture mechanics
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MDPI and ACS Style

You, X.; Wang, Z.; Zhou, X.; Liu, Z.; Jiang, R.; Gai, W. Fatigue Life Appraisal and Its Corrected Stress Intensity Factor for Repaired Off-CentrallyCracked Aluminum Plates. Materials 2020, 13, 4014. https://doi.org/10.3390/ma13184014

AMA Style

You X, Wang Z, Zhou X, Liu Z, Jiang R, Gai W. Fatigue Life Appraisal and Its Corrected Stress Intensity Factor for Repaired Off-CentrallyCracked Aluminum Plates. Materials. 2020; 13(18):4014. https://doi.org/10.3390/ma13184014

Chicago/Turabian Style

You, Xiang; Wang, Zhiyu; Zhou, Xiafang; Liu, Zifeng; Jiang, Ruijuan; Gai, Weiming. 2020. "Fatigue Life Appraisal and Its Corrected Stress Intensity Factor for Repaired Off-CentrallyCracked Aluminum Plates" Materials 13, no. 18: 4014. https://doi.org/10.3390/ma13184014

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