Effect of Surface Roughness on Ultrasonic Testing of Back-Surface Micro-Cracks
Abstract
:Featured Application
Abstract
1. Introduction
2. Background
2.1. Surface Roughness
2.2. Scattering from Rough Surface
2.3. Detection of Back-Surface Crack with Rough Surface
3. Simulation and Analyses
3.1. Two-Dimensional Rough Surface Model Setup
3.2. Verification of the Micro-Crack Signal on the Rough Surface
3.3. Micro-Crack Signal Assessment under the Effect of Front-Surface Ra
3.4. Micro-Crack Signal Assessment under the Effect of Back-Surface Ra
3.5. Micro-Crack Signal Assessment under the Effect of Roughness Rsm
4. Experiments and Discussion
4.1. Experimental Equipment
4.2. The Effect of Front-Surface Roughness on Notch Detection
4.3. The Effect of Back-Surface Roughness on Notch Detection
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Processing Method | Sample No. | Ra (µm) | Rsm (µm) | Notch Depth D (µm) | Notch Width W (µm) | Material | ||
---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | ||||||
CNC turning (Rough surface) | 1 | 3.2 | 1320 | 250 | 150 | 100 | 100 | Q235A Steel |
2 | 6.3 | |||||||
3 | 12.5 | |||||||
4 | 17.0 | |||||||
5 | 23.0 | |||||||
Vertical CNC milling (Rough surface) | 6 | 3.2 | 900 | 250 | 150 | 100 | ||
7 | 6.3 | |||||||
8 | 12.5 | |||||||
9 | 17.0 | |||||||
10 | 23.0 | |||||||
Grinding (Smooth surface) | All samples | 1.6 | 85 | 250 | 150 | 100 |
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Wang, Z.; Cui, X.; Ma, H.; Kang, Y.; Deng, Z. Effect of Surface Roughness on Ultrasonic Testing of Back-Surface Micro-Cracks. Appl. Sci. 2018, 8, 1233. https://doi.org/10.3390/app8081233
Wang Z, Cui X, Ma H, Kang Y, Deng Z. Effect of Surface Roughness on Ultrasonic Testing of Back-Surface Micro-Cracks. Applied Sciences. 2018; 8(8):1233. https://doi.org/10.3390/app8081233
Chicago/Turabian StyleWang, Zhe, Ximing Cui, Hongbao Ma, Yihua Kang, and Zhiyang Deng. 2018. "Effect of Surface Roughness on Ultrasonic Testing of Back-Surface Micro-Cracks" Applied Sciences 8, no. 8: 1233. https://doi.org/10.3390/app8081233