The effect of composite patch on stress intensity factor of semi-elliptical crack in a spherical pressure vessel

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Eskandari Hadi; Mirzadeh Fatemeh; Ghanbari moslem

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Paper Information

Journal: JOURNAL OF MECHANICAL ENGINEERING Year:2020 | Volume:50 | Issue:1 (90) Page(s): 17-25

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Title

The effect of composite patch on stress intensity factor of semi-elliptical crack in a spherical pressure vessel

Author(s)

Eskandari Hadi | Mirzadeh Fatemeh | Ghanbari moslem | Issue Writer Certificate

Keywords

stress intensity factor

spherical pressure vessel

semi-elliptical crack

composite patch

Finite element method

Abstract

The purpose of this article is to investigate the effect of composite patch on stress intensity factor (SIF) for internal and external semi-elliptical crack located in spherical pressure vessel. The composite patch is wrapped only around the crack. The three dimensional analysis is done by Finite element method (FEM). ANSYS Parametric Design Language (APDL) codes are developed to facilitate modeling of semi-elliptical crack in spherical pressure vessel. By using these codes the effect of some parameters such as crack geometry (crack depth/thickness of vessel and crack depth/ half-length of crack), the ratio of composite thickness to metal thickness, the ratio of composite patch width to half-length of crack and composite material on stress intensity factor values are investigated and discussed in detail. The results show that composite patch has significant reduction in stress intensity factor at crack tip. Also it can be concluded that composite patch is more effective for deeper and slender crack. In addition composite patch is more effective to decrease stress intensity factor of external crack in comparison to internal crack.

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APA: Copy

Eskandari, Hadi, Mirzadeh, Fatemeh, & Ghanbari, moslem. (2020). The effect of composite patch on stress intensity factor of semi-elliptical crack in a spherical pressure vessel. JOURNAL OF MECHANICAL ENGINEERING, 50(1 (90) ), 17-25. SID. https://sid.ir/paper/270105/en

Vancouver: Copy

Eskandari Hadi, Mirzadeh Fatemeh, Ghanbari moslem. The effect of composite patch on stress intensity factor of semi-elliptical crack in a spherical pressure vessel. JOURNAL OF MECHANICAL ENGINEERING[Internet]. 2020;50(1 (90) ):17-25. Available from: https://sid.ir/paper/270105/en

IEEE: Copy

Hadi Eskandari, Fatemeh Mirzadeh, and moslem Ghanbari, “The effect of composite patch on stress intensity factor of semi-elliptical crack in a spherical pressure vessel,” JOURNAL OF MECHANICAL ENGINEERING, vol. 50, no. 1 (90) , pp. 17–25, 2020, [Online]. Available: https://sid.ir/paper/270105/en

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