期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 155, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2021.106582
关键词
Nonlinear ultrasonics; Fatigue crack; Lamb wave mixing; Combined harmonics; Mixing zone
资金
- National Research Foundation of Korea (NRF) - Korean government (MSIT) [2019R1A3B3067987]
- National Research Foundation of Korea [2019R1A3B3067987] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A nonlinear ultrasonic three-wave mixing technique was developed in this study to accurately detect and localize early-stage fatigue cracks. The effectiveness of the proposed technique was validated through experiments with aluminum specimens, and it was found to have higher sensitivity towards fatigue cracks compared to conventional nonlinear ultrasonic techniques.
Herein, we developed a nonlinear ultrasonic three-wave mixing technique to more accurately detect and localize early-stage fatigue cracks. First, we derived the theoretical relationship between third-order combined harmonics (TOCH) and fatigue crack size based on Paris-Erdogan and Nazarov-Sutin theories, and developed a detailed analytical model to calculate the size of the mixing zone. Next, we experimented with aluminum specimens to validate the effectiveness of the proposed technique. Furthermore, the amplitude variation of TOCH with respect to fatigue crack cycles was investigated. Comparative results confirmed that the proposed technique shows higher sensitivity toward fatigue cracks than conventional nonlinear ultrasonic techniques.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据