Delamination detection using embedded BOCDA optical fiber sensor

S. Hasegawa; T. Yari; M. Toyama; K. Nagai; Y. Koshioka

doi:10.1117/12.847963

31 March 2010 Delamination detection using embedded BOCDA optical fiber sensor

S. Hasegawa, T. Yari, M. Toyama, K. Nagai, Y. Koshioka

Proceedings Volume 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010; 76470C (2010) https://doi.org/10.1117/12.847963
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

Abstract

We conducted the delamination detect test for composites plate using the Brillouin optical correlation domain analysis (BOCDA) method. Firstly, a hole-assisted-fiber was chosen for embedding optical fiber sensor in order to avoid the increase of optical transmission loss induced by embedded into composite plate. The hole-assisted-fiber is functional better than comparing with the telecommunication optical fibers when optical fiber sensor was embedded into composite. Secondly, a delamination propagating was detected by the BOCDA from Brillouin peak frequency distribution and Brillouin gain spectrum shape changes.

Citation Download Citation

S. Hasegawa, T. Yari, M. Toyama, K. Nagai, and Y. Koshioka "Delamination detection using embedded BOCDA optical fiber sensor", Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 76470C (31 March 2010); https://doi.org/10.1117/12.847963

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