| Jiang Ming-shun,Sui Qing-mei,Jia Lei,Peng Peng,Cao Yuqiang.FBG-based ultrasonic wave detection and acoustic emission linear location system[J].Optoelectronics Letters,2012,8(3):220-223 |
| FBG-based ultrasonic wave detection and acoustic emission linear location system |
| Author Name | Affiliation | | Jiang Ming-shun | School of Control Science and Engineering, Shandong University, Jinan 250061, China；Yanzhou Coal Mining Group Co. Ltd., Postdoctoral Workstation, Zoucheng 273500, China | | Sui Qing-mei | School of Control Science and Engineering, Shandong University, Jinan 250061, China | | Jia Lei | School of Control Science and Engineering, Shandong University, Jinan 250061, China | | Peng Peng | Yanzhou Coal Mining Group Co. Ltd., Postdoctoral Workstation, Zoucheng 273500, China | | Cao Yuqiang | School of Control Science and Engineering, Shandong University, Jinan 250061, China |
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| Abstract: |
| The ultrasonic (US) wave detection and an acoustic emission (AE) linear location system are proposed, which employ fiber Bragg
gratings (FBGs) as US wave sensors. In the theoretical analysis, the FBG sensor response to longitudinal US wave is investigated.
The result indicates that the FBG wavelength can be modulated as static case when the grating length is much shorter than
US wavelength. The experimental results of standard sinusoidal and spindle wave test agree well with the generated signal.
Further research using two FBGs for realizing linear location is also achieved. The maximum linear location error is obtained
as less than 5 mm. FBG-based US wave sensor and AE linear location provide useful tools for specific requirements. |
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| This work has been supported by the National Natural Science Foundation of China (No. 61074163), the Natural Science Foundation of Shandong
Province (No.ZR2011FQ025), and the Independent Innovation Fund of Shandong University (No.2010GN066) |
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