Print Email Facebook Twitter Monitoring strain in rolling element bearings using fiber Bragg grating sensors Title Monitoring strain in rolling element bearings using fiber Bragg grating sensors Author van den Bercken, Vincent (TU Delft Aerospace Engineering) Contributor Groves, R.M. (mentor) van Genuchten, Eric (graduation committee) Van Eesbeek, Stijn (graduation committee) Garcia, Santiago (graduation committee) Degree granting institution Delft University of Technology Programme Aerospace Engineering Date 2017-10-26 Abstract Using Fiber Bragg Grating (FBG) sensors in rolling element bearings is a novel way of monitoring bearings. During prototype testing, differences between sensor readouts were observed, leading to the research question: “What causes the observed differences in the strain distribution from sensor to sensor in a rolling element bearing equipped with FBG sensors?”. Further tests were performed with an interrogator capable of scanning the spectra with a resolution 25 times higher compared to the original measurements, performed with a SmartScan SBI interrogator. These tests showed that in different temperature conditions, sensors may behave differently, resulting in a translation of the strain levels between sensors. Furthermore, it was found that (1) the peak detection method used by the SBI interrogator, (2) the lower resolution of the SBI interrogator and (3) the differences in FWHMs between the sensors and between different load conditions, led to inconsistent strain readings from the sensors. Subject FBGInterrogatorPeak detectionCentroidBragggratingFiberFWHMStrainBearingRolling elementnon-uniformReflective spectraNDTHealth monitoring To reference this document use: http://resolver.tudelft.nl/uuid:7b3e7317-320c-4f08-b60c-eb4711bee742 Embargo date 2020-01-01 Part of collection Student theses Document type master thesis Rights © 2017 Vincent van den Bercken Files PDF VvdBercken_Thesis.pdf 18.14 MB Close viewer /islandora/object/uuid:7b3e7317-320c-4f08-b60c-eb4711bee742/datastream/OBJ/view