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SPR 접합법을 이용한 Al-5052 인장-전단 시험편의 피로강도
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  • SPR 접합법을 이용한 Al-5052 인장-전단 시험편의 피로강도
저자명
이만석,김택영,강세형,김호경,Lee. Man Suk,Kim. Taek Young,Kang. Se Hyung,Kim. Ho Kyung
간행물명
한국안전학회지
권/호정보
2014년|29권 4호|pp.9-14 (6 pages)
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한국안전학회
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정기간행물|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Self-piercing riveting(SPR) is a mechanical fastening technique which is put pressure on the rivet for joining the sheets. Unlike a spot welding, SPR joining does not make the harmful gas and $CO_2$ and needs less energy consumption. In this study, static and fatigue tests were conducted using tensile-shear specimens with Al-5052 plates for evaluation of fatigue strength of the SPR joints. During SPR joining process for the specimen, using the current sheet thickness and a rivet, the optimal applied punching force was found to be 21 kN. And, the maximum static strength of the specimen produced at the optimal punching force was 3430 N. During the fatigue tests for the specimens, interface failure mode occurred on the top substrate close to the rivet head in the most high-loading range region, but on the bottom substrate close to the rivet tail in the low -loading range region. There was a relationship between applied load amplitude $P_{amp}$ and lifetime of cycle N for the tensile-shear, $P_{amp}=3395.5{ imes}N^{-0.078}$. Using the stress-strain curve of the Al-5052 from tensile test, the simulations for fatigue specimens have been carried out using the implicit finite element code ABAQUS. The relation between von-Mises equivalent stress amplitude and number of cycles was found to be ${sigma}_{eq}=514.7{ imes}N^{-0.033}$.