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http://dx.doi.org/10.3744/SNAK.2015.52.6.435

Flaw Assessment on an Offshore Structure using Engineering Criticality Analysis  

Kang, Beom-Jun (Department of Naval Architecture and Ocean Engineering, College of Engineering, INHA University)
Kim, Yooil (Department of Naval Architecture and Ocean Engineering, College of Engineering, INHA University)
Ryu, Cheol-Ho (Department of Naval Architecture and Ocean Engineering, College of Engineering, INHA Technical College)
Ki, Hyeok-Geun (DSME R&D Institute, Daewoo Shipbuilding and Marine Engineering, Co., Ltd.)
Park, Sung-Gun (DSME R&D Institute, Daewoo Shipbuilding and Marine Engineering, Co., Ltd.)
Oh, Yeong-Tae (DSME R&D Institute, Daewoo Shipbuilding and Marine Engineering, Co., Ltd.)
Publication Information
Journal of the Society of Naval Architects of Korea / v.52, no.6, 2015 , pp. 435-443 More about this Journal
Abstract
Offshore structure may be considerably vulnerable to fatigue failure while initial flaw propagates under cyclic loading, so crack propagation analysis/fracture/yield assessments about initial flaw detected by NDT are necessarily required. In this paper, case studies have been conducted by flaw assessment program using engineering criticality analysis (ECA) approach. Variables such as flaw geometry, flaw size, structure geometry, dynamic stress, static stress, toughness, crack growth rate, stress concentration factor (SCF) affected by weld are considered as analysis conditions. As a result, the safety of structure was examined during fatigue loading life. Also, critical initial flaw size was calculated by sensitivity module in the developed program. The flaw assessments analysis using ECA approach can be very useful in offshore industries owing to the increasing demand on the engineering criticality analysis of potential initial flaws.
Keywords
Flaw assessment; Fracture mechanics; Crack propagation analysis; Initial flaw; BS7910;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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