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초고주기피로 시험의 연구 동향Studies on very high cycle fatigue
- Other Titles
- Studies on very high cycle fatigue
- Issue Date
- Nov-2012
- Publisher
- 대한기계학회
- Keywords
- 초음파 피로시험; Very high cycle fatigue; 초고주기 피로; 동탄성계수; Ultrasonic fatigue test; Dynamic Young’s modulus
- Citation
- 2012년도 추계학술대회 강연 및 논문 초록집, v. , no. , pp.355 - 358
- Indexed
- OTHER
- Journal Title
- 2012년도 추계학술대회 강연 및 논문 초록집
- Start Page
- 355
- End Page
- 358
- Abstract
- Accelerated method of Ultrasonic fatigue test(UFT) has been used for analyzing very high cycle fatigue( VHCF, Nf > 107 ). This paper reviews on how to determine the specimen. The UFT using a resonance of 20kHz is focused. The specimen geometry is determined with the selection of test materials utilizing dynamic Young’s modulus and wavelength at 20 kHz. Through a resonant vibration test method is calculated the length of the specimen at resonance of 20 kHz. Dynamic Young’s modulus is calculated using the resonant frequency and the density. After designing the shape of the specimen, the stress can be calculated.
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