Novel method of defect identification in bent structures through feature-guided wave detection using fiber Bragg grating sensors

Pabitro Ray; Prabhakaran Manogharan; Balaji Srinivasan; Krishnan Balasubramaniam; Prabhu Rajagopal

doi:10.1117/12.2195065

28 September 2015 Novel method of defect identification in bent structures through feature-guided wave detection using fiber Bragg grating sensors

Pabitro Ray, Prabhakaran Manogharan, Balaji Srinivasan, Krishnan Balasubramaniam, Prabhu Rajagopal

Author Affiliations +

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96340S (2015) https://doi.org/10.1117/12.2195065
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

Feature-guided waves (FGW) have emerged as a promising technique for structural health monitoring as they are well confined in local features such as bends and welds. In this paper, we propose and demonstrate a novel method for identifying defects in 90 ̊ transverse bent structures through FGW detection using fiber Bragg gratings. Our experimental results are in excellent agreement with results predicted using 3D-Finite Element (FE) simulations of the bent structure.

Citation Download Citation

Pabitro Ray, Prabhakaran Manogharan, Balaji Srinivasan, Krishnan Balasubramaniam, and Prabhu Rajagopal "Novel method of defect identification in bent structures through feature-guided wave detection using fiber Bragg grating sensors", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96340S (28 September 2015); https://doi.org/10.1117/12.2195065

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