Dynamic measurements on a star tracker prototype of AMS using fiber optic sensors

A. Cusano, P. Capoluongo, S. Campopiano, C. Ambrosino, M. Giordano, M. Caponero, A. Paolozzi, F. Felli

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

An aluminum prototype of the AMIGA (Astro Mapper for Instrument Check of Attitude) Star Tracker Support (ASTS) of the AMS_02 (Alpha Magnetic Spectrometer) space experiment has been instrumented with Fiber Bragg Gratings (FBGs). In this work the use of FBGs to perform dynamic tests on the ASTS prototype is reported. The excitation has been provided by an instrumented impact hammer, the mechanical response of the structure has been obtained by bonded FBGs and accelerometers. All time histories have been recorded, transformed in the frequency domain to retrieve Frequency Response Functions (FRFs) -accelerometer responses- and Strain Frequency Response Functions (SFRFs) FBG responses-, both providing resonant frequencies and displacements (strain) shapes of the ASTS. Numerical simulations of this structure have been performed to predict its resonant frequencies and vibrational displacement (strain) shapes. Experimental results demonstrate the capability of FBGs to perform in situ experimental modal analysis as confirmed by the comparison of the optical response with the accelerometers one and the good agreement with the numerical analysis.
Original languageEnglish
DOIs
Publication statusPublished - 2005
Externally publishedYes
Event17th International Conference on Optical Fibre Sensors, OFS-17 - , Belgium
Duration: 1 Jan 2005 → …

Conference

Conference17th International Conference on Optical Fibre Sensors, OFS-17
CountryBelgium
Period1/1/05 → …

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Cusano, A., Capoluongo, P., Campopiano, S., Ambrosino, C., Giordano, M., Caponero, M., ... Felli, F. (2005). Dynamic measurements on a star tracker prototype of AMS using fiber optic sensors. Paper presented at 17th International Conference on Optical Fibre Sensors, OFS-17, Belgium. https://doi.org/10.1117/12.623608