Mode III stress intensity factors of sickle-shaped surface cracks in round bars / Al Emran Ismail

The solutions of stress intensity factors (SIFs) of sickle-shaped surface crack in round bars are not currently available especially when the cracks are subjected to mode III loading. Mode I SIFs can be obtained in open literature however they are also insufficiently completed. Therefore, this paper...

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Main Author:	Ismail, Al Emran
Format:	Article
Language:	English
Published:	Faculty of Mechanical Engineering and UiTM Press 2016
Subjects:	Materials of engineering and construction
Online Access:	http://ir.uitm.edu.my/id/eprint/16138/ http://ir.uitm.edu.my/id/eprint/16138/1/AJ_AL%20EMRAN%20ISMAIL%20JME%2016.pdf

id	uitm-16138
recordtype	eprints
spelling	uitm-161382017-02-17T02:26:53Z http://ir.uitm.edu.my/id/eprint/16138/ Mode III stress intensity factors of sickle-shaped surface cracks in round bars / Al Emran Ismail Ismail, Al Emran Materials of engineering and construction The solutions of stress intensity factors (SIFs) of sickle-shaped surface crack in round bars are not currently available especially when the cracks are subjected to mode III loading. Mode I SIFs can be obtained in open literature however they are also insufficiently completed. Therefore, this paper develops numerically the sickle-shaped crack in round bars using AN SYS finite element program. In order to validate the model, the existing mode I SIFs are used and then compared with the present model. It is found that both models are well agreed with each other. There are two important parameters used such as the crack aspect ratio, a/b and the relative crack depth, a/D ranging between 0.2-1.2 and 0.1-0.6, respectively. SIFs based on J-integral are calculated along the crack fronts for various crack geometries. It is found that the SIFs are significantly affected by a/b and a/D. For the relatively straight-fronted crack (a/b £ 0.2), the SIFs are almost flattened along the crack front. When a/b increased (a/b > 0.2), the SIFs have decreased whereas they are increased when a/D increased. It is also found that the SIFs closed to the outer edge are higher than the SIFs at the deepest crack along the crack front. However when a/b³ 1.2, the role of SIFs along the crack fronts are inversed where lower SIFs are observed at the outer point compared with the middle point. Faculty of Mechanical Engineering and UiTM Press 2016 Article PeerReviewed text en http://ir.uitm.edu.my/id/eprint/16138/1/AJ_AL%20EMRAN%20ISMAIL%20JME%2016.pdf Ismail, Al Emran (2016) Mode III stress intensity factors of sickle-shaped surface cracks in round bars / Al Emran Ismail. Journal of Mechanical Engineering, 13 (1). pp. 34-44. ISSN 1823-5514
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Materials of engineering and construction
spellingShingle	Materials of engineering and construction Ismail, Al Emran Mode III stress intensity factors of sickle-shaped surface cracks in round bars / Al Emran Ismail
description	The solutions of stress intensity factors (SIFs) of sickle-shaped surface crack in round bars are not currently available especially when the cracks are subjected to mode III loading. Mode I SIFs can be obtained in open literature however they are also insufficiently completed. Therefore, this paper develops numerically the sickle-shaped crack in round bars using AN SYS finite element program. In order to validate the model, the existing mode I SIFs are used and then compared with the present model. It is found that both models are well agreed with each other. There are two important parameters used such as the crack aspect ratio, a/b and the relative crack depth, a/D ranging between 0.2-1.2 and 0.1-0.6, respectively. SIFs based on J-integral are calculated along the crack fronts for various crack geometries. It is found that the SIFs are significantly affected by a/b and a/D. For the relatively straight-fronted crack (a/b £ 0.2), the SIFs are almost flattened along the crack front. When a/b increased (a/b > 0.2), the SIFs have decreased whereas they are increased when a/D increased. It is also found that the SIFs closed to the outer edge are higher than the SIFs at the deepest crack along the crack front. However when a/b³ 1.2, the role of SIFs along the crack fronts are inversed where lower SIFs are observed at the outer point compared with the middle point.
format	Article
author	Ismail, Al Emran
author_facet	Ismail, Al Emran
author_sort	Ismail, Al Emran
title	Mode III stress intensity factors of sickle-shaped surface cracks in round bars / Al Emran Ismail
title_short	Mode III stress intensity factors of sickle-shaped surface cracks in round bars / Al Emran Ismail
title_full	Mode III stress intensity factors of sickle-shaped surface cracks in round bars / Al Emran Ismail
title_fullStr	Mode III stress intensity factors of sickle-shaped surface cracks in round bars / Al Emran Ismail
title_full_unstemmed	Mode III stress intensity factors of sickle-shaped surface cracks in round bars / Al Emran Ismail
title_sort	mode iii stress intensity factors of sickle-shaped surface cracks in round bars / al emran ismail
publisher	Faculty of Mechanical Engineering and UiTM Press
publishDate	2016
url	http://ir.uitm.edu.my/id/eprint/16138/ http://ir.uitm.edu.my/id/eprint/16138/1/AJ_AL%20EMRAN%20ISMAIL%20JME%2016.pdf
first_indexed	2023-09-18T22:55:24Z
last_indexed	2023-09-18T22:55:24Z
_version_	1777417820057894912

Mode III stress intensity factors of sickle-shaped surface cracks in round bars / Al Emran Ismail

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