Fibre Bragg grating (FBG) sensor system for highly flexible single-link robots

2009 ◽  
Vol 150 (1) ◽  
pp. 24-39 ◽  
Author(s):  
Ismael Payo ◽  
Vicente Feliu ◽  
Osvaldo Daniel Cortázar
Keyword(s):  
Sensor System ◽  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
Fbg Sensor ◽  
Single Link

SENSITIVITY MEASUREMENT OF FIBRE BRAGG GRATING SENSOR

2016 ◽  
Vol 78 (3) ◽  
Author(s):  
Suzairi Daud ◽  
Muhammad Safwan Abd Aziz ◽  
Kashif Tufail Chaudhary ◽  
Mahdi Bahadoran ◽  
Jalil Ali
Keyword(s):  
Tunable Laser ◽  
Sensor System ◽  
Laser Source ◽  
Bragg Grating ◽  
Wavelength Shift ◽  
Fibre Bragg Grating ◽  
Sensor Head ◽  
Fibre Bragg Grating Sensor ◽  
Pass Through ◽  
Bragg Grating Sensor

A practical pass-through type fibre Bragg grating (FBG) temperature sensor system have been designed, developed, simulated, and experimentally investigated. The performance of FBG was evaluated in harsh environments exposed under direct sunlight, rain, and wind. The sensor system designed directly focused with convex and hand lens. The temperature of FBG’s sensor head been measured. The broadband laser source was launched into the system using tunable laser source (TLS) and both transmission and reflection spectra of FBG sensor were measured by optical spectrum analyzer (OSA). Results shows that the Bragg wavelength shift,  increased proportionally with the temperature changes. The sensitivity of FBG were recorded at 0.0100 and 0.0132 nm °C-1 for the systems where convex and hand lens applied to the FBG’s sensor head respectively, while the sensitivity of 0.0118 nm °C-1 measured for the system without any focusing element applied.

scholarly journals Preliminary View of a Smart Technique for Materials Testing in the Laboratory using FBG Sensor

2018 ◽  
Vol 203 ◽  
pp. 04001
Author(s):  
Isah W. Balarabe ◽  
Mohamad Hisham ◽  
Ahmad R. Niraku ◽  
Indra S.H. Harahap
Keyword(s):  
High Resolution ◽  
Bragg Grating ◽  
Materials Testing ◽  
Fibre Bragg Grating ◽  
Fbg Sensor ◽  
Perfect Correlation ◽  
Fbg Sensors

Simple experiments for calibrating Fibre Bragg Grating (FBG) in order to measure strain and temperature have been successfully demonstrated in this study. This will allow convenient use of FBG sensor in the laboratory for measuring quantities. Linear curve fittings were employed for both the strain and temperature, and R2 values are determined respectively. The result showed a perfect correlation between FBG, strain and temperature. The approach can be employed with ease, simplicity in an inexpensive manner, in order harness the advantages offered by FBG sensors such as accuracy, precision, speed and high resolution.

Composite plate drop test using a 16-channel fibre Bragg grating strain sensor system

1998 ◽  
Author(s):  
Geir B. Havsgard ◽  
Karianne Pran ◽  
Sverre Knudsen ◽  
P. O. Baalerud ◽  
Gunnar Wang ◽  
...  
Keyword(s):  
Composite Plate ◽  
Strain Sensor ◽  
Drop Test ◽  
Sensor System ◽  
Bragg Grating ◽  
Fibre Bragg Grating

scholarly journals A High Sensitive Micro-Seismic Fiber Bragg Grating(FBG) Sensor System

2011 ◽  
Vol 26 ◽  
pp. 765-771
Author(s):  
Jin-Yu Wang ◽  
Guang-Dong Song ◽  
Xiao-Hui Liu ◽  
Chang Wang ◽  
Tong-Yu Liu
Keyword(s):  
Fiber Bragg Grating ◽  
Sensor System ◽  
Bragg Grating ◽  
Fbg Sensor

Fracture Monitoring of Composite Wind Turbine Blade Using High-Speed Bragg Grating Sensor System

2011 ◽  
Vol 109 ◽  
pp. 79-83 ◽  
Author(s):  
Hyung Joon Bang ◽  
Soo Hyun Kim
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
High Speed ◽  
Performance Test ◽  
Turbine Blades ◽  
Wind Turbine Blade ◽  
Sensor System ◽  
Bragg Grating ◽  
Fbg Sensor ◽  
Fbg Sensors

This paper introduces a FBG (fiber Bragg grating) based AE (acoustic emission) sensing system for use in health monitoring of composite wind turbine blades. In this study, a multiplexing high speed FBG sensor system was developed with a spectrometer-type demodulator based on a linear photo detector. Pencil break test was performed using an FBG sensor and the results were compared with the results of piezo-based AE sensor. For the performance test of fracture sensing in composite materials, a down-scaled wind turbine blade was fabricated and drop impact tests were performed. Arrayed 4 FBG sensors were installed in the skin of wind turbine blade and impacts of 15 J energy were applied by a drop weight. The frequency characteristics of impact induced AE signals were examined with short-time Fourier transform focused on the leading waves. Finally, the onset of fractures in composite structure was successfully assessed using arrayed FBG sensors.

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