SM570, POSTEN60 및 80 강재의 피로균열성장특성

• 영문명: Characteristics of Fatigue Crack Growth in SM570, POSTEN60, 80 Steel
• 발행기관: 강원대학교 산업기술연구소
• 저자명: 정영화(Jeong Young Wha) 김익겸(Kim lk Gyeom) 강성립(Kang Sung Lib) 남왕현(Nam Wang Hyone) 김은성(Kim Eun Sung)
• 간행물 정보: 『산업기술연구』vol.21, 333~340쪽, 전체 8쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2001.09.30

영문 초록

In this study, a series of fatigue tests are carried out in order to estimate quantitatively the characteristics of fatigue crack growth rate for high strength steels of SM570, POSTEN60, and POSTEN80 steel, that is, the influence on fatigue crack growth rate according to the welding line, the characteristics of fatigue crack growth according to the welding method and the kinds of steel, and the characteristics of fatigue crack growth for base metal, heat affected zone and weld metal. From the test results, in case that the notch if parallel to welding line, it knows that the retardations of fatigue crack growth rate in crack tip at early stage increase remarkably than in case that the notch is perpendicular to welding line due to compressive residual stress. And the characteristics of fatigue crack growth rate according to welding method are that the dispersion of fatigue crack growth rate in case of FCAW method is smaller than that of SAW method. Also, it knows that the fatigue crack growth rate converges in high stress intensity factor range.

목차

Abstract

1. 서론

2. 시험편 및 시험방법

3. 실험결과 및 고찰

4. 결론

참고문헌

키워드

고강도강 용접입열량 용접잔류응력 피로균열성장속도 응력확대계수범위 high strength steel welding heat input welding residual stress fatigue crack growth rate stress intensity factor range