On the Research and Application of Ultrasonic Fatigue Testing Technology

Abstract:

In the present paper, the characteristic and the application of ultrasonic fatigue testing technology is illuminated. The main problems i.e. the size effect, the thermal effect and frequency effect due to the high frequency are discussed. The results show that: 1. As there is a size effect, a uniform specimen size should be adopted in the very-high cycle fatigue standard and for special designed specimen the designed size should be noted along with the fatigue test results; 2.the heat generation attributes mainly to the low yield strength and the high applied stress, as a result, ultrasonic fatigue testing technology can be mainly applied to the ultra-high cycle fatigue test of high-strength steel; 3.the frequency effect is related to the crystal structure of metallic materials, however, ultrasonic fatigue testing technology can be applied to conduct the comparison of the fatigue properties of the same steel grade before and after the smelting process.

• Periodical: Key Engineering Materials (Volume 664)
• Pages: 62-67
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.664.62
• Online since: September 2015
• Authors: Wen Jie Peng*, Yue Wang, Huan Xue, Jia He
• Keywords: Frequency Effect, Size Effect, Thermal Effect, Ultrasonic Fatigue Testing

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