Earticle

초록

영어

The fracture of mechanical structure is caused by internal cracks in the material. Particularly, the fracture can also be seen to happen under the stress that is lower than yield strength in case of high strength steel because of the crack happening from the defect inside the material. In this study, high strength steel with four holes near the center crack were designed by angle and fatigue experiments, and the simulation analyses to verify the experimental results were carried out. As the results of this study, the crack growth rates are shown to be 0.000485, 0.000434 and 0.000422 respectively at the inclined angles of center crack as 22.5°, 45° and 67.5°. The maximum deformation energies become 0.0848mJ, 0.0603mJ and 0.0582mJ respectively at the inclined angles of center crack as 22.5°, 45° and 67.5°. It is thought that this study result can be utilized as the basic data at the study on the material existing with the defects of crack and hole.

목차

ABSTRACT
 1. 서론
 2. 연구 방법
  2.1 연구 모델
  2.2 실험 조건
 3. 실험 결과
 4. 해석을 통한 실험 결과의 검증
  4.1 경계 조건
  4.2 실험 및 해석 결과 비교를 통한 검증
 5. 결론
 References

키워드

저자

• 이정호 [ Jung-Ho Lee | Mechanical Engineering Dept. Graduate School, Kongju National University ]
• 조재웅 [ Jae-Ung Cho | Professor, Division of Mechanical & Automotive Engineering, Kongju National University ] Corresponding author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국기계항공기술학회지(구 한국기계기술학회지) [Journal of the Korean Society of Mechanical and Aviation Technology ]

• 간기

  격월간

• pISSN

  1229-604X

• eISSN

  2508-3805

• 수록기간

  1999~2026

• 등재여부

  KCI 등재

• 십진분류

  KDC 550 DDC 620