Abstract
Loading experiments have been carried out on a flat panel and C-channels fabricated by the Continuous Resin Transfer Molding (CRTMTM) process. Arrays of fiber Bragg grating (FBG) strain sensors written during fiber draw were embedded in the structures, and the strains measured by these distributed sensors are compared with the results of surface-mounted resistance strain gages (RSG's) and FBG arrays. Reproducibility of the strains measured by an embedded FBG array was demonstrated during cyclical loading of a C-channel, and survivability and reliability of the array was established when the structure was loaded to failure. Discrepancies between the results reported by the embedded FBG's and surface- mounted RSG's and FBG's are attributed to deflections and/or distortions of the embedded FBG by the structural fibers during CRTMTM processing.© (1996) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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