TMCP강의 부식 환경하에서의 과대하중이 피로균열진전에 미치는 영향

• 영문명: The Overload Effect on the Fatigue Crack Propagation under the TMCP Steel s Corrosion Environment
• 발행기관: 한국산업기술융합학회(구. 산업기술교육훈련학회)
• 저자명: 이기백(Ki-Baik Lee) 송득중(Duk-Joong Song)
• 간행물 정보: 『산업기술연구논문지』산업기술교육훈련논문지 제17권 1호, 129~136쪽, 전체 8쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2012.03.30

영문 초록

The load working on real marine structures by an accident great wave or a ocean storm is not a load contains regular wavelength but a variable load with variable wavelength and power. Simplifying the variable load and investigation about the overload effect on the fatigue crack propagation behavior become more important subject. Corrosion fatigue phenomena as the source of damages will become a source of fatigue crack on the material surface. An explanation of fatigue crack propagation behavior on the variable load will be very important on estimate the lifetime or estimate the remained lifetime of the using real machine on the design. Simplifying the variable load and investigation about the overload effect to fatigue crack propagation behavior become most important subject. So, We investigate the TMCP(Thermo-Mechanical Control Process) steel s crack propagation velocity delay and acceleration effects according to the overload loading under artificial seawater environment. And we conclude belows. 1. The delay ration tendency about the magnitude of ΔK on the air was different from that on the seawater. 2. The crack propagation velocity differences of the overall delay time zone on the air relate the magnitude of the delay ratio. And the lower crack propagation velocity makes the great delay ratio in the overall delay time zone on working the corrosion. 3. The more overload repeating times make the great delay ratio on the air and the seawater, especially the 100 times makes much great delay ratio than a time or the 10 times.

목차

Ⅰ. 서론

Ⅱ. 실험장치 및 실험방법

Ⅲ. 실험결과 및 고찰

Ⅳ. 결론

키워드

Fatigue Crack(피로균열) Crack Propagation(파괴진전) Marine Structures(해양구조물) Corrosion Fatigue Crack(부식피로균열) Corrosion Environment(부식환경)