Abstract
Moiré interferometry is used with Fourier transform fringe analysis to investigate the strain fields in a region local to 125-μm uncoated silica optical fibers embedded in a quasi-isotropic graphite/PEEK thick composite compression specimens. Analysis of several regions in several specimens showed no measurable strain concentrations resulting from the embedded optical fibers, even though the optical fibers clearly alter the local microarchitecture of the host material system.
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Czarnek, R., Guo, Y., Bennett, K.D. andClaus, R.O., “Interferometric Measurements of Strain Concentrations Induced by an Optical Fiber Embedded in a Fiber Reinforced Composite,”Proc. SPIE,1170,43–54, (1988).
Salehi, A., Tay, A., Wilson, D. and Smith, D., “Strain Concentration Factors Around Optical Fibers by FEM and Moiré Interferometry,” Proc. 5th ASM ESD Advanced Composites Conf., 11–19 (1989).
Singh, H., Sirkis, J.S. and Dasgupta, A., “Micromechanics of Optical Fiber Sensors Embedded in Laminated Smart Structures,” Proc. 1991 SEM Spring Conf. on Exp. Mech., 137–144, (1991).
Tay, A., Wilson, D.A., andWood, L., “Strain Analysis of Optical Fibers Embedded in Composite Materials Using Finite Element Modeling,”SPIE,1170,521–533 (1989).
Dasgupta, A., Wan., Y. and Sirkis, J.S., “Prediction of Resin Pocket Geometry for Stress Analysis of Optical Fibers Embedded in Laminated Composites,” Smart Material Structures (1), 101–107 (1992).
Davidson, R., and Roberts, S.S.J., “Finite Element Analysis of Composite Laminates Containing Transversely Embedded Optical Fiber Sensors,” Proc. 1st European Conf. on Smart Structures and Materials, ed. B. Culshaw, P.T. Gardiner, and A. McDonach, IOP Publ., Bristol, 115–122 (1992).
Sirkis, J.S., and Dasgupta, A., “Optical Fiber/Composite Interaction Mechanics,” to appear in Fiber Optic Smart Structures, ed. John Wiley, New York.
Post, D., “Moiré Interferometry,” in Handbook of Expermental Mechanics, ed. A.S. Kobayashi, Prentice Hall, Englewood Cliffs, NJ (1987).
Guo, Y., Post, D. andCzarnek, R., “The Magic of Carrier Fringes in Moiré Interferometry,”Experimental Mechanics,29,169–173 (1989).
Morimoto, Y., Seguchi, Y. andHigashi, T., “Two-Dimensional Moire' Method and Grid Method using Fourier Transform,”Experimental Mechanics,29 (4),399–404 (1989).
Singh, H., and Sirkis, J.S., “Direct Extraction of Phase Gradients From Fourier Transform and Phase-Step Fringe Patterns,” submitted to Appl. Opt.
Singh, H., and Sirkis, J.S., “Micro-Mechanical Analysis of Thick Composites with Embedded Optical Fibers,” Proc. 1993 SEM Spring Conf. on Exp. Mech. (1993).
Guo, Y. andPost, D. andHan, B., “Thick Composites in Compression: An Experimental Study of Micromechanical Behavior and Smeared Engineering Properties,”J. Comp. Mat.,26 1930–1944 (1992).
Case, S.W. and Carman, G.P., “Compression Strength of Composites Containing Embedded Sensors or Actuators,” submitted to J. of Int. Mat. and Struct.
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Sirkis, J.S., Singh, H. Moiré analysis of thick composites with embedded optical fibers. Experimental Mechanics 34, 300–305 (1994). https://doi.org/10.1007/BF02325144
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DOI: https://doi.org/10.1007/BF02325144