구조용 강 SS400의 용접부 잔류응력이 파괴인성에 미치는 영향

• 영문명: Effects of a Residual Stress near the Weld Zone of a Structural Steel SS400 on Fracture Toughness
• 발행기관: 한국산업기술융합학회(구. 산업기술교육훈련학회)
• 저자명: 정치호(Chi-Ho Jung) 이윤석(Youn-Suk Lee)
• 간행물 정보: 『산업기술연구논문지』산업기술교육훈련논문지 제16권 3호, 99~107쪽, 전체 9쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2011.09.30

영문 초록

In this paper, we investigate the effects of a residual stress on fracture toughness near the weld zone of a structural steel SS400. The critical ？？-integrals, the fracture toughness of the elastic-plastic fracture mechanics are for the welded and notched CT specimens of SS400 with tensile residual stress, with compressive residual stress, and without residual stress. The welded CT specimen is fabricated by CO2 laser welding machine. The direct current potential method is used in the measurement of the fracture toughness. It is concluded that when the tensile residual stress ahead of the crack front is distributed, the fracture toughness is dropped.

목차

Ⅰ. 서 론

II. 이론적 배경

Ⅲ. 실 험

Ⅳ. 결과 및 토론

V. 결 론

키워드

Fracture Toughness(파괴인성) Residual Stress(잔류응력) Elastic-Plastic Fracture Mechanics(탄소성 파괴역학) CO2 Laser Welding(이산화탄소 레이저 용접)