Acoustic emission detection using fiber Bragg gratings

2001 ◽  
Author(s):  
Ignacio M. Perez ◽  
Hongliang Cui ◽  
Eric Udd
Keyword(s):  
Acoustic Emission ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Emission Detection

scholarly journals The Study of the Directional Sensitivity of Fiber Bragg Gratings for Acoustic Emission Measurements

2019 ◽  
Vol 19 (16) ◽  
pp. 6771-6777 ◽  
Author(s):  
Sagar Jinachandran ◽  
Abheek Basu ◽  
Huijun Li ◽  
Jiangtao Xi ◽  
B. Gangadhara Prusty ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Directional Sensitivity

Design of Railway Journal Box Embedded with FBG Sensor to Monitor Temperature and Acoustic Emission Signal

2012 ◽  
Vol 566 ◽  
pp. 480-483 ◽  
Author(s):  
Hyuk Jin Yoon ◽  
Myung Jun Park ◽  
Jung Seok Kim ◽  
Jung Jun Park
Keyword(s):  
Acoustic Emission ◽  
Optical Fiber ◽  
Acoustic Emission Signal ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Emission Signal ◽  
Fbg Sensor ◽  
Protection Tube ◽  
Fbg Sensors

Railway journal box is designed to monitor the temperature and acoustic emission signal from the axle continuously. Fiber Bragg gratings (FBG) sensors are embedded inside of the journal box cover. Three types of journal box cover are designed such as front elbow coupler type, side hose type and side coupler type. Sensors and optical fiber are located on the predetermined positions engraved inside of the cover. Optical fiber egresses out of the surface and is protected in the protection tube. Among the three types of journal box cover, the side coupler model could be used most effectively.

Fabrication of superimposed fiber Bragg gratings and applications in fiber laser oscillators

Optik ◽  
2020 ◽  
Vol 214 ◽  
pp. 164583
Author(s):  
Qihao Hu ◽  
Pengrui Wang ◽  
Meng Wang ◽  
Zefeng Wang
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Laser Oscillators
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