Prediction of Remaining Life Time and Determination of Inspection Cycle Considering Critical Crack in Tension Bar of Continuous Ship Unloader 


Vol. 33,  No. 6, pp. 1-7, Dec.  2018
10.14346/JKOSOS.2018.33.6.1


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  Abstract

The Continuous Ship Unloader (CSU) is an equipment that unloads freight from the ship docked in the port to the land. And the design target life time is designed to be 30 to 50 years, and it is classified as a semi-permanent large facility. However, cracks may occur due to structural defects, abnormal loads, and corrosion, and fatigue failure may occur before the design life is reached. In this study, we predicted the remaining life time of the main component of the CSU considering crack. And also proposed inspection cycle for maintenance of CSU based on the results of the remaining life time prediction. For this purpose, the structure, operational stresses of the CSU were analyzed and main members were selected. And tensile tests and fatigue crack propagation tests were performed with SM490YA and SM570TMC, which are used as main materials for CSU.

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  Cite this article

[IEEE Style]

박수, 정장영, 송정일, 김대진, 석창성, "Prediction of Remaining Life Time and Determination of Inspection Cycle Considering Critical Crack in Tension Bar of Continuous Ship Unloader," Journal of the Korean Society of Safety, vol. 33, no. 6, pp. 1-7, 2018. DOI: 10.14346/JKOSOS.2018.33.6.1.

[ACM Style]

박수, 정장영, 송정일, 김대진, and 석창성. 2018. Prediction of Remaining Life Time and Determination of Inspection Cycle Considering Critical Crack in Tension Bar of Continuous Ship Unloader. Journal of the Korean Society of Safety, 33, 6, (2018), 1-7. DOI: 10.14346/JKOSOS.2018.33.6.1.

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