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하이드로포밍 공정 전후의 인장 및 피로 물성 변화The Variations of Tensile and Fatigue Properties in the Hydroforming Process
- Other Titles
- The Variations of Tensile and Fatigue Properties in the Hydroforming Process
- Issue Date
- 2007
- Publisher
- 한국정밀공학회
- Keywords
- Fatigue test (피로시험); Hydroforming (하이드로포밍); Miniature specimen (소형 시편); Size effect (크기효과); Surface roughness (표면거칠기); Tensile test (인장시험); Fatigue test (피로시험); Hydroforming (하이드로포밍); Miniature specimen (소형 시편); Size effect (크기효과); Surface roughness (표면거칠기); Tensile test (인장시험)
- Citation
- 한국정밀공학회지, v.24, no.12, pp 111 - 118
- Pages
- 8
- Journal Title
- 한국정밀공학회지
- Volume
- 24
- Number
- 12
- Start Page
- 111
- End Page
- 118
- ISSN
- 1225-9071
2287-8769
- Abstract
- Hydroforming is a cost-effective way of shaping malleable metals such as steel into lightweight, structurally stiff and strong pieces. With the increased use of the hydroformed components in automotive and aerospace industries, it is important to know the variations of the mechanical properties in the hydroforming process for the safe and durable design purposes. The principal goal of this paper is to suggest a procedure to evaluate the variations of tensile and fatigue properties before and after a hydroforming process. A miniature specimen, which is 0.2 mm thick and 2.3 mm wide, is devised and tested to measure local mechanical properties. The effects of specimen size, defects, surface roughness, and hydroforming on the tensile and fatigue behaviors are discussed.
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