Abstract
This paper reports an application of an optical fiber sensor in a continuous and in situ failure testing of an E-glass/vinylester top hat stiffener (THS). The sensor head was constructed from a compact phase-shifted fiber Bragg grating (PS-FBG). The narrow transmission channel of the PS-FBG is highly sensitive to small perturbation, hence suitable to be used in acoustic emission (AE) assessment technique. The progressive failure of THS was tested under transverse loading to experimentally simulate the actual loading in practice. Our experimental tests have demonstrated, in good agreement with the commercial piezoelectric sensors, that the important failures information of the THS was successfully recorded by the simple intensity-type PS-FBG sensor.
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Azmi, A.I., Raju & Peng, G.D. Failure monitoring of E-glass/vinylester composites using fiber grating acoustic sensor. Photonic Sens 3, 184–192 (2013). https://doi.org/10.1007/s13320-012-0076-1
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DOI: https://doi.org/10.1007/s13320-012-0076-1