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http://dx.doi.org/10.3795/KSME-A.2013.37.8.967

Technical Review of Specimens under Ultrasonic Fatigue Test  

Myeong, No-Jun (Dept. of Mechanical Engineering, Hanyang Univ.)
Han, Seung-Wook (Dept. of Mechanical Engineering, Hanyang Univ.)
Park, Jung-Hoon (Dept. of Mechanical Engineering, Hanyang Univ.)
Choi, Nak-Sam (Dept. of Mechanical Engineering, Hanyang Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.37, no.8, 2013 , pp. 967-973 More about this Journal
Abstract
An accelerated ultrasonic fatigue test(UFT) has been used for analyzing very high cycle fatigue( VHCF, $N_f$ > $10^7$). This study reviews how the test specimen is to be determined. We focus on UFT using a resonance of 20 kHz. The specimen geometry is determined by selecting test materials by using a dynamic Young's modulus and wavelength of 20 kHz. The dynamic Young's modulus is calculated at the resonant frequency. Through a resonant vibration test at 20 kHz, the length of the specimen is calculated. By determining the shape of the specimen, the stress during the UFT is calculated. The UFT results should be comparable at the test frequency and the specimen geometry obtained by the conventional fatigue tests.
Keywords
Ultrasonic Fatigue Test; Dynamic Youngs Modulus; Very High Cycle Fatigue;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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