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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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Tensile tests were conducted at low temperatures for the steel materials which are used for outer shell of the vessels making transit through the polar regions. The selected steel materials were GL-DH32, GL-DH36 and GL-EH36. In comparison with the results at room temperature, the yield stress increases approximately by 10 to 13 percent at -30℃ and by 13 to 19 percent at -50℃ while the tensile strength increases about by 9 percent at -30℃ and 11 to 14 percent at -50℃. To obtain true stress-true strain, i.e. correct plastic hardening characteristics, Bridgman’s(1952) necking correction formula was introduced taking triaxial state of stresses after onset of diffuse necking into consideration. Photographs of fractured surfaces were taken by using Scanning Electron Microscope immedately after tensile tests completed and one for GL-EH36 has been presented in this paper.
목차
Abstract
1. 서론
2. 소성경화 구성 방정식
3. 실험개요
4. 결론
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참고문헌
참고문헌 (9)
참고문헌 신청
1. [단행본] - Anderson, T / 1995 / Fracture mechanics. Fundamentals & Applications / C Press
2. [기타자료] - / 2008 / ASTM E646-07, Standard Test Method for Tensile Strain-Hardening Exponents(n-Values) of Metallic Steel Materials
3. [단행본] - Bridgman, P.W / 1952 / Studies in Large Plastic Flow / McGraw Hill
4. [학술지(정기간행물)] - Choung, J. M. / 2008 / Study on True Stress Correction from Tensile Tests / Journal of Mechanical Science and Technology 22 (6) : 1039 ~ 1051
6. [학술지(정기간행물)] - Holloman J. H / 1945 / Tensile Deformation / Trans. AIME 162 : 268 ~
2. [기타자료] - / 2008 / ASTM E646-07, Standard Test Method for Tensile Strain-Hardening Exponents(n-Values) of Metallic Steel Materials
3. [단행본] - Bridgman, P.W / 1952 / Studies in Large Plastic Flow / McGraw Hill
4. [학술지(정기간행물)] - Choung, J. M. / 2008 / Study on True Stress Correction from Tensile Tests / Journal of Mechanical Science and Technology 22 (6) : 1039 ~ 1051
6. [학술지(정기간행물)] - Holloman J. H / 1945 / Tensile Deformation / Trans. AIME 162 : 268 ~
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UCI(KEPA) : I410-ECN-0101-2013-559-001493333