Experimental Demonstration of Real-time correction of writing errors during Fibre-Bragg grating fabrication

2016 ◽  
Author(s):  
Adenowo A. Gbadebo ◽  
Elena G. Turitsyna ◽  
John A. R. Williams
Keyword(s):  
Real Time ◽  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
Experimental Demonstration ◽  
Grating Fabrication ◽  
Time Correction ◽  
Writing Errors

scholarly journals Evaluation of Impact of Beam Size on Fibre Bragg Grating Fabrication

2014 ◽  
Author(s):  
Adenowo A. Gbadebo ◽  
Elena G. Turitsyna ◽  
John A. R. Williams
Keyword(s):  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
Beam Size ◽  
Grating Fabrication

scholarly journals A technique for mitigating the effect of the writing-beam profile on fibre Bragg grating fabrication

2015 ◽  
Vol 23 (10) ◽  
pp. 12628 ◽  
Author(s):  
Elena G. Turitsyna ◽  
Adenowo Gbadebo ◽  
John A. R. Williams
Keyword(s):  
Beam Profile ◽  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
Grating Fabrication ◽  
Writing Beam

scholarly journals A Kinematic Model to Compensate the Structural Deformations in Machine Tools Using Fibre Bragg Grating (FBG) Sensors

2016 ◽  
Author(s):  
Francesco Aggogeri ◽  
Alberto Borboni ◽  
Rodolfo Faglia ◽  
Angelo Merlo ◽  
Nicola Pellegrini
Keyword(s):  
Machine Tool ◽  
Real Time ◽  
Kinematic Model ◽  
Experimental Tests ◽  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
Machining Performance ◽  
Novel Approach ◽  
Structural Deformations ◽  
Fbg Sensors

Structural deformations are one of the most significant factor that affects machine tool (MT) positioning accuracy. These induced errors are complex to be represented by a model, nevertheless they need to be evaluated and predicted in order to increase the machining performance. This paper presents a novel approach to calibrate a machine tool in real-time, analyzing the thermo-mechanical errors through Fibre Bragg Grating (FBG) sensors embedded in the MT frame. The proposed configuration consists of an adaptronic structure of passive materials, Carbon Fibre Reinforced Polymers (CFRP), equipped by FBG sensors that are able to measure in real-time the deformed conditions of the frame. By using a proper thermo-mechanical kinematic model, the displacement of the end effector may be predicted and corrected when it is subjected to external undesired factors. By starting from a set of FE simulations to develop a model able to describe the MT structure stresses, a prototype has been fabricated and tested. The scope was to compare the numerical model with the experimental tests using FBG sensors. The experimental campaign has been performed varying the structure temperature over time and measuring the tool tip point (TTP) positions. The obtained results showed a substantial matching between the real and the predicted position of TTP confirming the effectiveness of the proposed calibration system.

A real-time impact detection and diagnosis system of catenary using measured strains by fibre Bragg grating sensors

2018 ◽  
Vol 57 (12) ◽  
pp. 1924-1946 ◽  
Author(s):  
Mengying Tan ◽  
Ning Zhou ◽  
Jiangwen Wang ◽  
Dong Zou ◽  
Weihua Zhang ◽  
...  
Keyword(s):  
Real Time ◽  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
Diagnosis System ◽  
Impact Detection ◽  
Detection And Diagnosis
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