Effect of coating characteristics on strain transfer in embedded fiber optic sensors

John S. Madsen; A. Peter Jardine; Raymond J. Meilunas; A. G. Tobin; Eugene Pak

doi:10.1117/12.147979

12 July 1993 Effect of coating characteristics on strain transfer in embedded fiber optic sensors

John S. Madsen, A. Peter Jardine, Raymond J. Meilunas, A. G. Tobin, Eugene Pak

Proceedings Volume 1918, Smart Structures and Materials 1993: Smart Sensing, Processing, and Instrumentation; (1993) https://doi.org/10.1117/12.147979
Event: 1993 North American Conference on Smart Structures and Materials, 1993, Albuquerque, NM, United States

Abstract

Understanding elastic interactions that occur between an embedded optical fiber and its host matrix is important for implementation of optical strain sensors into aerospace structures. A previously developed analytical model predicted the effects of fiber coating thickness and elastic modulus on the strain transfer from an isotropic matrix to an embedded coated fiber optic. To verify this, a series of tungsten coatings were magnetron sputtered onto bare intrinsic Fabry-Perot sensors that were embedded into a neat epoxy resin block. The block was then compression loaded in the transverse direction to the fiber, and the optical strain response was measured. Comparisons between the responses of both coated and uncoated sensors indicated that the experimental measurements of strain transfer in embedded fiber-optic devices yielded good agreement with the analytical model.

Citation Download Citation

John S. Madsen, A. Peter Jardine, Raymond J. Meilunas, A. G. Tobin, and Eugene Pak "Effect of coating characteristics on strain transfer in embedded fiber optic sensors", Proc. SPIE 1918, Smart Structures and Materials 1993: Smart Sensing, Processing, and Instrumentation, (12 July 1993); https://doi.org/10.1117/12.147979

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