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An experimental study of utilizing multimode polymer fiber for load detection

In this paper the applicability of the conventional multimode polymer fiber embedded in concrete specimens for detection of the applied load was studied. The certain loads were applied to the studied concrete beams and the resultant changes in the speckle patterns formed at the exit face of fiber were observed. The changes in the speckle patterns were studied using correlation processing technique. The obtained results show features and possibilities of utilizing the speckle patterns generated by multimode polymer fiber embedded into the concrete beam for sensing of applied load by employing appropriate loading setup.