Structural Engineering and Mechanics

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Effect of corrosion on the ultimate strength of double hull oil tankers - Part II: hull girders

  • Kim, Do Kyun (The Ship and Offshore Research Institute (The Lloyd's Register Educational Trust Research Centre of Excellence), Pusan National University) ;
  • Park, Dae Kyeom (The Ship and Offshore Research Institute (The Lloyd's Register Educational Trust Research Centre of Excellence), Pusan National University) ;
  • Park, Dong Hee (The Ship and Offshore Research Institute (The Lloyd's Register Educational Trust Research Centre of Excellence), Pusan National University) ;
  • Kim, Han Byul (The Ship and Offshore Research Institute (The Lloyd's Register Educational Trust Research Centre of Excellence), Pusan National University) ;
  • Kim, Bong Ju (The Ship and Offshore Research Institute (The Lloyd's Register Educational Trust Research Centre of Excellence), Pusan National University) ;
  • Seo, Jung Kwan (The Ship and Offshore Research Institute (The Lloyd's Register Educational Trust Research Centre of Excellence), Pusan National University) ;
  • Paik, Jeom Kee (The Ship and Offshore Research Institute (The Lloyd's Register Educational Trust Research Centre of Excellence), Pusan National University)
  • Received : 2011.09.21
  • Accepted : 2012.04.11
  • Published : 2012.05.25
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Abstract

Numerous oil tanker losses have been reported and one of the possible causes of such casualties is caused by the structural failure of aging ship hulls in rough weather. In aging ships, corrosion and fatigue cracks are the two most important factors affecting structural safety and integrity. This research is about effect on hull girder ultimate strength behavior of double hull oil tanker according to corrosion after Part I: stiffened panel. Based on corrosion data of Part I (time-dependent corrosion wastage model and CSR corrosion model), when progressing corrosion of fourtypes of double hull oil tankers (VLCC, Suezmax, Aframax, and Panamax), the ultimate strength behavior of hull girder is compared and analyzed. In case of the ultimate strength behavior of hull girder, when occurring corrosion, the result under vertical and horizontal bending moment is analyzed. The effect of time-dependent corrosion wastage on the ultimate hull girder strength as well as the area, section modulus, and moment of inertia are also studied. The result of this research will be useful data to evaluate ultimate hull girder strength of corroded double hull oil tanker.

Keywords

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