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With the recent increase in size of ships and offshore structures, there are more demand for thickerplates. As the thickness increases, it is known that fatigue life of the structures decrease. To improve thefatigue life, post weld treatments techniques, such as toe grinding, TIG dressing and hammer peening, aretypically employed. However, these techniques require additional construction time and production cost.

Therefore, it is of crucial interest steels with longer fatigue crack growth life compared to conventional steels.

This study investigates fatigue crack growth rate (FCGR) behaviours of conventional EH36 steel and Ferrite-Bainite dual phase EH36 steel (F-B steel). F-B steel is known to have improved fatigue performance associatedwith the existence of two different phases. Ferrite-Bainite dual phase microstructures are obtained by specialthermo mechanical control process (TMCP). FCGR behaviours are investigated by a series of constantstress-controlled FCGR tests. Considering all test conditions (ambient, low temperature, high stress ratio), itis shown that FCGR of F-B steel is slower than that of conventional EH36 steel. From the tensile testsand impact tests, F-B steel exhibits higher values of strength and impact energy leading to slower FCGR.

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기사명 저자명 페이지 원문 목차
건설용 강재개발 및 용접기술동향 = Development of Structural Steel and Trend of Welding Technology 김성진, 정홍철 pp.7-20

자동차 산업에서 뿌리기술의 중요성 및 최신 용접/접합 기술 = Importance of Fundamental Manufacturing Technology in the Automotive Industry and the State of the Art Welding and Joining Technology 장인성, 조용준, 박현성, 소득영 pp.21-25

자동차 전장용 무연솔더 및 솔더 접합부의 신뢰성 평가 = Lead-free Solder for Automotive Electronics and Reliability Evaluation of Solder Joint 방정환, 유동열, 고용호, 윤정원, 이창우 pp.26-34

와이어 송급 레이저 금속 3차원 적층 연구동향 = Recent Studies of Laser Metal 3D Deposition with Wire Feeding 감동혁, 김영민, 김철희 pp.35-40

Ferrite-Bainite dual phase 강의 피로균열진전 특성 평가 = (A)Study of Fatigue Crack Growth Behaviour for Ferrite-Bainite Dual Phase Steel 김덕근, 조동필, 오동진, 김명현 pp.41-46

조선소 WPS/PQR 관리 DB시스템 개발에 관한 연구 = (A)Study on Developing Database System for Management of WPS/PQR in Shipyard 박주용, 공지혜, 박세진, 남성길 pp.47-53

스플라인 알고리즘을 이용한 비드 가시화 = Bead Visualization Using Spline Algorithm 구창대, 양형석, 김맹남 pp.54-58

Self-Piercing Rivet과 Hybrid Joining을 이용한 자동차용 선도장 칼라강판과 용융아연도금강판의 접합부 기계적 성질 평가 = (A)Study on Tensile Shear Characteristics of Dissimilar Joining Between Pre-coated Automotive Metal Sheets and Galvanized Steels with the Self-Piercing Rivet and Hybrid Joining 배진희, 김재원, 최일동, 남대근, 김준기, 박영도 pp.59-67

Narrow Gap 맞대기 TIG 용접에서 생산성 향상을 위한 연구 = (A)Study on Productivity Improvement in Narrow Gap TIG Welding 전재호, 김성률, 조상명 pp.68-74

Microstructure and Hardness of Surface Melting Hardened Zone of Mold Steel, SM45C using Yb:YAG Disk Laser Kwang-Hyeon Lee, Seong-Won Choi, Tae-Jin Yoon, Chung-Yun Kang pp.75-81

참고문헌 (11건) : 자료제공( 네이버학술정보 )

참고문헌 목록에 대한 테이블로 번호, 참고문헌, 국회도서관 소장유무로 구성되어 있습니다.
번호 참고문헌 국회도서관 소장유무
1 A Study of the Thickness Effect using Structural Stress Approach for Fillet Welded Joints 소장
2 A Study on the Fatigue Strength hnprovement using Weld Toe Burr Gfinding 소장
3 Seung Yong Lee and Kab Soo Kyung, A Study on the Fatigue Strength Improvement of the Fillet Welded Connections with respect to Post-Weld Treatment, KSCE Journal of Civil Engineering, 28-5A (2008), 665-672 (in Korean) 미소장
4 Jeong Woo Han and Seung Ho Han, Research for Fatigue Life Extension Techniques in Weldments via Pneumatic Hammer Peening, Journal of Mechanical Science and Technology, 33-8 (2009), 842-848 (in Korean) 미소장
5 A. Hobbacher, Recommendations for fatigue design of welded joints and components. IIW document XIII-2151-07/XV-1254-07. WRC bulletin 520, The welding Research Council, New York, (2007) 미소장
6 Methods for Fatigue Strength Improvement of the Weld Structure (II) - Post Weld Improvement Methods - 네이버 미소장
7 M. Guan and H. Yu, Fatigue crack growth behaviors in hot-rolled low carbon steels, A comparison between ferrite-pearlite and ferrite-bainite microstructures, Materials Science & Engineering A, 559 (2013), 875-881 미소장
8 ASTM, Standard Specification for Structural Steel for Ships, ASTM A131 (2014), 1-7 미소장
9 ASTM, Standard Test Method for Measurement of Fatigue Crack Growth Rates, ASTM E647-13 (2013), 1-50 미소장
10 BSI, Guide to Methods for Assessing the Acceptability of Flaws in Metallic Structures, BS 7910 (2013), 1-480 미소장
11 Microstructural effects on fatigue crack growth behavior of a microalloyed steel 네이버 미소장

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