OICC Press Journal of Solid Mechanics 2008-7683 10 2 2018 06 30 Fracture Analysis of Externally Semi-Elliptical Crack in a Spherical Pressure Vessel with Hoop-Wrapped Composite 263 270 EN H Eskandari Abadan Institute of Technology, Petroleum University of Technology, Abadan, Iran Gh Rashed Abadan Institute of Technology, Petroleum University of Technology, Abadan, Iran F Mirzade Abadan Institute of Technology, Petroleum University of Technology, Abadan, Iran Journal Article 2018 06 30 In this paper the effect of composite hoop-wrapped on stress intensity factor for semi-elliptical external crack which located in spherical pressure vessel, were investigated through the Finite Element Analysis. In order to find the effect of some parameters such as composite thickness and width, internal pressure and crack geometry, comparisons between different cases were done and discussed in detail. The result show that repairing crack with composite hoop-wrapped, can significantly reduce the stress intensity factor along the crack front.