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3.042 Project Laboratory

Fiber Optic Elastometer. Strain in fiber materal causes changes in indices of refraction at interface of core and cladding materials. Subsequent Brillouin scattering and modal power distribution (MPD) easily detected. v B (T 0 , ε ) = C ε ( ε – ε 0 ) + v B 0 (T 0 , ε 0 ).

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3.042 Project Laboratory

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  1. Fiber Optic Elastometer • Strain in fiber materal causes changes in indices of refraction at interface of core and cladding materials. • Subsequent Brillouin scattering and modal power distribution (MPD) easily detected. • vB (T0, ε) = Cε (ε –ε0) + vB0 (T0, ε0) El-Sherif, M., Fidanboylu, K., Gafsi, R., Yuan, J., Richards, K., El-Sherif, D., et al. (2000). A Novel Fiber Optic System for Measuring the Dynamic Structural Behavior of Parachutes. Journal of Intelligent Material Systems and Structures, 11(5), 351-359 Distributed fiber strain sensor based on Brillouin scattering for inspection of pipeline buckling LufanZou, XiaoyiBao, Fabien Ravet, Liang Chen, Joe Zhou, and Tom E. Zimmerman, Proc. SPIE 5855, 571 (2005), http://communication.howstuffworks.com/fiber-optic-communications/fiber-optic.htm 3.042 Project Laboratory Sense-On

  2. Challenges • Fibers that can sustain high strain (>10% ) • Has to be sewn in due to dynamic stress environment • All-In-One system (laser, fiber, and photodiode) 3.042 Project Laboratory Team Sensors

  3. Solutions • Vary composition of fibers to increase elasticity. • Incorporate laser and detector into sensor 3.042 Project Laboratory Sense-On

  4. Gantt Chart 3.042 Project Laboratory Sense-On

  5. Solutions • El-Sherif, M., Fidanboylu, K., Gafsi, R., Yuan, J., Richards, K., El-Sherif, D., et al. (2000). A Novel Fiber Optic System for Measuring the Dynamic Structural Behavior of Parachutes. Journal of Intelligent Material Systems and Structures, 11(5), 351-359. doi: 10.1106/JF6U-2FQ9-FQGE-3VXK. • Distributed fiber strain sensor based on Brillouin scattering for inspection of pipeline buckling LufanZou, XiaoyiBao, Fabien Ravet, Liang Chen, Joe Zhou, and Tom E. Zimmerman, Proc. SPIE 5855, 571 (2005), DOI:10.1117/12.624267 • http://communication.howstuffworks.com/fiber-optic-communications/fiber-optic.htm 3.042 Project Laboratory Team Sensors

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