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Article

Impact Wave Monitoring in Soil Using a Dynamic Fiber Sensor Based on Stimulated Brillouin Scattering

by 1,2,*, 2 and 2
1
National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150001, China
2
Department of Civil and Environmental Engineering, Lehigh University, Bethlehem, PA 18015, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M.N. Passaro
Sensors 2015, 15(4), 8163-8172; https://doi.org/10.3390/s150408163
Received: 2 February 2015 / Revised: 25 March 2015 / Accepted: 26 March 2015 / Published: 8 April 2015
(This article belongs to the Section Physical Sensors)
The impact wave response of soil due to a ball drop is monitored on a 30.5 cm by 30.5 cm square soil box using a fiber sensor with dynamic strain sensing capability. The experiments are conducted in real time using a simple one-laser one-modulator configuration with stimulated Brillouin scattering. The embedded BOTDA sensor grid successfully monitored the distribution and evolution of the inner strains of a sand bed during a mass impact on its surface. The measurement of the distributed dynamic strains was possible in several milliseconds and with 1 cm actual location resolution. This paper presents a time-domain signal analysis utilized for determining the dynamic strains in embedded fiber sensor. The results demonstrate the method to be a promising one for detection of subsurface vibration and movement in geotechnical Structure Health Monitoring (SHM). View Full-Text
Keywords: Brillouin scattering; underground; infrastructure; dynamic strains; vibration Brillouin scattering; underground; infrastructure; dynamic strains; vibration
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MDPI and ACS Style

Cui, Q.; Pamukcu, S.; Pervizpour, M. Impact Wave Monitoring in Soil Using a Dynamic Fiber Sensor Based on Stimulated Brillouin Scattering. Sensors 2015, 15, 8163-8172. https://doi.org/10.3390/s150408163

AMA Style

Cui Q, Pamukcu S, Pervizpour M. Impact Wave Monitoring in Soil Using a Dynamic Fiber Sensor Based on Stimulated Brillouin Scattering. Sensors. 2015; 15(4):8163-8172. https://doi.org/10.3390/s150408163

Chicago/Turabian Style

Cui, Qingsong, Sibel Pamukcu, and Mesut Pervizpour. 2015. "Impact Wave Monitoring in Soil Using a Dynamic Fiber Sensor Based on Stimulated Brillouin Scattering" Sensors 15, no. 4: 8163-8172. https://doi.org/10.3390/s150408163

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