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Fatigue crack propagation evaluation for thin plate structures using a wireless ultrasonic sensing device.
- Source :
- Structural Control & Health Monitoring; Mar2022, Vol. 29 Issue 3, p1-12, 12p
- Publication Year :
- 2022
-
Abstract
- Summary: To avoid complicated material constants calculation of conventional analysis approaches, in this paper, a work is conducted on evaluation the feasibility of ultrasonic characteristic parameters in in‐situ wireless monitoring of fatigue crack propagation process in a structure. An aluminum central cracked specimen was fabricated to simulate a damaged thin plate structure. A fatigue crack growth test was conducted on the specimen under uniaxial cyclic tensile load with a constant amplitude, and the crack was vision‐based regularly detected. Simultaneously, the crack propagation was monitored in real time by a self‐developed wireless ultrasonic sensing device. Based on a crack growth behavior analysis, a relationship is established between crack length and loading cycles. Meanwhile, the evolvement of ultrasonic signals with the crack growing is investigated, and a relationship was established between the crack length and the ultrasonic characteristic parameter. Ultimately, a connection is established between the loading cycles and the ultrasonic characteristic parameter, which contains the length information of the cracks. The proposed model shows a good agreement with experimental data with correlation coefficients all higher than 0.96, which indicates the proposed method has a great potential in evaluating fatigue cracks in thin plate structures. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15452255
- Volume :
- 29
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Structural Control & Health Monitoring
- Publication Type :
- Academic Journal
- Accession number :
- 155057002
- Full Text :
- https://doi.org/10.1002/stc.2888