scholarly journals Experimental study on a new method to forecasting goaf pressure based key strata deformation detected using optic fiber sensors

2021 ◽  
Vol 67 ◽  
pp. 102706
Author(s):  
Jing Chai ◽  
Yibo Ouyang ◽  
Jinxuan Liu ◽  
Dingding Zhang ◽  
Wengang Du ◽  
...  
Keyword(s):  
Experimental Study ◽  
New Method ◽  
Optic Fiber ◽  
Fiber Sensors ◽  
Key Strata ◽  
Strata Deformation

Experimental Study of Two-Phase Compulsive Circulation Flows Finishing

2010 ◽  
Vol 135 ◽  
pp. 149-153 ◽  
Author(s):  
Wen Hui Li ◽  
Sheng Qiang Yang ◽  
Xiu Hong Li
Keyword(s):  
Numerical Simulation ◽  
Experimental Study ◽  
Liquid Flow ◽  
New Method ◽  
Surface Finishing ◽  
Two Phase ◽  
Nozzle Position ◽  
Main Factors

For the precise hole surface, the burr severely affects products’ performance. Considering the specific conditions of the precise hole surface finishing, a new method of two-phase compulsive circulation flows finishing is brought up. Nozzle number, nozzle position, liquid flow, etc. are main factors, which would directly influence finishing effect and efficiency. Affecting rules of main factors are studied by experiments and numerical simulation, which provide basis for thorough research.

scholarly journals Application of Brillouin scattering in optic-fiber sensors

2021 ◽  
Vol 2091 (1) ◽  
pp. 012070
Author(s):  
I V Bogachkov ◽  
N I Gorlov ◽  
E T Kitova ◽  
T I Monastyrskaya
Keyword(s):  
Dynamic Range ◽  
Brillouin Scattering ◽  
Spectral Component ◽  
Electric Power Industry ◽  
Oil And Gas Industry ◽  
Optic Fiber ◽  
Software Environment ◽  
Metrological Analysis ◽  
Physical Strain ◽  
Fiber Sensors

Abstract The article analyses possible applications for Brillouin scattering in optic-fiber sensors. They make it possible to do temperature and physical strain measurements with high accuracy for long line sections. The functional dependences of the output signals characteristics on parameters measured by the sensors are studied. Of particular interest are the results of the analysis of the spectral component shifts in the Brillouin light scattering depending on the fiber elongation and temperature. After a brief review of the basic theoretical principles the results of some researches aimed to expand the dynamic range and to increase spatial resolution. The results of simulation in professional design software environment OptiSystem 17.1. are described. The results are obtained by experimental research based on Brillouin reflectometer AQ8603 manufactured by “ANDO” (Japan). They show that it is possible to implement optic-fiber sensors based on Brillouin scattering in telecommunication systems, oil and gas industry, in electric-power industry, construction, aviation and space industry. The objectives for further research are to perform metrological analysis at all stages of the method implementation, to complete the base of Brillouin spectrograms for optical fiber of various types and to improve algorithms for automated processing spectra in order to expand functionality of the systems.

Experimental Study on Reflective Optical Fiber Hydrogen Sensor Using Two-Wavelength Light Sources

2012 ◽  
Vol 233 ◽  
pp. 303-306
Author(s):  
Xian Ling Deng ◽  
Chuan De Zhou ◽  
Ze Lun Li ◽  
Xin Gang Wang
Keyword(s):  
Experimental Study ◽  
Optical Fiber ◽  
Experimental Method ◽  
Hydrogen Sensor ◽  
Optical Fiber Sensors ◽  
Light Sources ◽  
Fiber Sensors ◽  
Experimental Scheme ◽  
Wavelength Light

Nowadays, optical fiber hydrogen sensor is one of most important potential of optical fiber sensors. Currently, there are a lot of explorations around this aspect. This paper uses experimental method to study reflective optical fiber hydrogen sensor with two-wavelength light sources. Firstly, the experimental principle was introduced. Based on the principle, experimental scheme, devices, and process are described. By the experiment, the reflectance is the output as the main result. The experiment results describes at last.

Cerebral Vasomotor Tone and Eeg during Injections of Umbradil: An Experimental Study with a New Method

1957 ◽  
Vol Original Series, Volume 47 (3) ◽  
pp. 185-191 ◽  
Author(s):  
D. H. Ingvar ◽  
U. Soderberg
Keyword(s):  
Experimental Study ◽  
New Method ◽  
Vasomotor Tone

Signal processing in SPR fiber sensors: Some remarks and a new method

2018 ◽  
Vol 268 ◽  
pp. 150-156 ◽  
Author(s):  
E. Rodríguez-Schwendtner ◽  
A. González-Cano ◽  
N. Díaz-Herrera ◽  
M.C. Navarrete ◽  
Ó. Esteban
Keyword(s):  
Signal Processing ◽  
New Method ◽  
Fiber Sensors
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