TY - JOUR
T1 - Arbitrary strain distribution measurement using a genetic algorithm approach and two fiber bragg grating intensity spectra
AU - Cheng, Hsu Chih
AU - Lo, Yu Lung
N1 - Funding Information:
The current authors acknowledge the financial support provided to this study by the National Science Council under Grant No. NSC 92-2622-L011-001. Also, this work is partially supported by Ministry of Education Program for Promoting Academic Excellence of Universities under the Grant No. A-92-E-FA08-1-4.
PY - 2004/9/15
Y1 - 2004/9/15
N2 - This paper proposes and verifies a simple, convenient, and low cost method to inversely measure arbitrary strain distributions by applying a genetic algorithm approach to analyze the reflection intensity spectra of two fiber Bragg gratings (FBGs). The proposed method involves bonding one uniform FBG and one chirped FBG to the same location of the structure of interest such that they both encounter the same strain field. The arbitrary strain distribution within the fiber gratings is then determined inversely from the two Bragg intensity spectra by means of a genetic algorithm population-based optimization process. The proposed measurement method is suitable for many smart structure-monitoring applications.
AB - This paper proposes and verifies a simple, convenient, and low cost method to inversely measure arbitrary strain distributions by applying a genetic algorithm approach to analyze the reflection intensity spectra of two fiber Bragg gratings (FBGs). The proposed method involves bonding one uniform FBG and one chirped FBG to the same location of the structure of interest such that they both encounter the same strain field. The arbitrary strain distribution within the fiber gratings is then determined inversely from the two Bragg intensity spectra by means of a genetic algorithm population-based optimization process. The proposed measurement method is suitable for many smart structure-monitoring applications.
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U2 - 10.1016/j.optcom.2004.05.054
DO - 10.1016/j.optcom.2004.05.054
M3 - Article
AN - SCOPUS:4344671933
SN - 0030-4018
VL - 239
SP - 323
EP - 332
JO - Optics Communications
JF - Optics Communications
IS - 4-6
ER -