Novel FBG rosette for determining impact location in thin plate-like structure

The paper consists of two interdependent parts. The first part presents numerical simulations of output response of single Fibre Bragg Grating (FBG) sensor which is driven by homogeneous deformation along sensor length. The example of such sensor is FBG sensor glued at only two points. The grating length and modulation depth of the refractive index are the critical parameters contributing to performance of the FBG sensors. Numerical analysis allowed to select an appropriate FBG sensors which will be used in the impact detection problem. In the second part of the paper a novel strain rosette with specific sensor array used in impact localisation problem is discussed and presented. The experiment was carried out on thin composite plate with the use of pulse force excitation. The method is based on estimation of principal direction of perturbed travelling wave initiated at impact point and does not use any information about wave propagation velocity.

[1]  Mohamed Chikh-Bled,et al.  Uniform Fiber Bragg Grating modeling and simulation used matrix transfer method , 2012 .

[2]  Sema Kurtaran,et al.  The modelling of Fiber Bragg Grating , 2007 .

[3]  Joël Cugnoni,et al.  Low energy impact damage monitoring of composites using dynamic strain signals from FBG sensors - Part I: Impact detection and localization , 2012 .

[4]  William B. Spillman,et al.  Fiber optic sensors : an introduction for engineers and scientists , 2011 .

[5]  Gangbing Song,et al.  Recent applications of fiber optic sensors to health monitoring in civil engineering , 2004 .

[6]  A. Othonos.  Fiber Bragg gratings , 1999 .

[7]  A. Ugural,et al.  Advanced strength and applied elasticity , 1981 .

[8]  Joël Cugnoni,et al.  Low energy impact damage monitoring of composites using dynamic strain signals from FBG sensors - Part II: Damage identification , 2012 .

[9]  Jalil Ali,et al.  Fiber Bragg grating modeling, simulation and characteristics with different grating lengths , 2007 .

[10]  Leon Poladian,et al.  PROPAGATION THROUGH NONUNIFORM GRATING STRUCTURES , 1994 .

[11]  Matthew C. Mowlem,et al.  Evaluating impact damage in CFRP using fibre optic sensors , 2007 .

[12]  Yun-Jiang Rao,et al.  Recent progress in applications of in-fibre Bragg grating sensors , 1999 .

[13]  Kenneth T. V. Grattan,et al.  Integration and assessment of fibre Bragg grating sensors in an all-fibre reinforced polymer composite road bridge , 2005 .

[14]  A. Minardo,et al.  Response of fiber Bragg gratings to longitudinal ultrasonic waves , 2005, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[15]  F. L. D. Scalea,et al.  Macro-fiber composite piezoelectric rosettes for acoustic source location in complex structures , 2007 .

[16]  Hiroshi Tsuda,et al.  Impact wave and damage detections using a strain-free fiber Bragg grating ultrasonic receiver , 2007 .

[17]  T. K. Gangopadhyay,et al.  Fibre Bragg gratings in structural health monitoring—Present status and applications , 2008 .

[18]  Tommy H.T. Chan,et al.  Fiber Bragg grating sensors for structural health monitoring of Tsing Ma bridge : Background and experimental observation , 2006 .

[19]  Vivekanand Mishra,et al.  Fiber Bragg Grating Modeling, Characterization and Optimization with different index profiles , 2010 .

[20]  Chow-Shing Shin,et al.  Fatigue damage monitoring in polymeric composites using multiple fiber bragg gratings , 2006 .

[21]  Véronique Michaud,et al.  Impact localisation with FBG for a self-healing carbon fibre composite structure , 2011 .