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Improving an Experimental Test Bed with Time-Varying Parameters for Developing High-Rate Structural Health Monitoring Methods

  • D. T. Foley
  • B. S. Joyce
  • J. Hong
  • S. Laflamme
  • J. DodsonEmail author
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

With the development of complex structures with high-rate dynamics, such as space structures, weapons systems, or hypersonic vehicles, comes a need for real-time structural health monitoring (SHM) methods. Researchers are developing algorithms for high-rate SHM methods, however, limited data exists on which to test these algorithms. An experimental test bed to simulate high-rate systems with rapid parameter changes was previously presented by the authors. This paper expands on the previous work. The initial configuration consisted of a cantilevered steel beam with a cart-roller system on a linear actuator to create an adjustable boundary condition along the beam, as well as detachable added masses. Experimental results are presented for the system in new configurations during various parameter changes. A clamped-clamped condition to increase the system’s natural frequencies is studied, along with improvements in test repeatability and user control over parameter changes.

Keywords

Time-varying systems Testbed Structural health monitoring SHM Damage detection High-rate state estimation 

Notes

Acknowledgements

The material is based upon work supported by the Air Force Office of Scientific Research under award number FA9550-17RWCOR503. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the United States Air Force.

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Copyright information

© Society for Experimental Mechanics, Inc. 2020

Authors and Affiliations

  • D. T. Foley
    • 1
  • B. S. Joyce
    • 2
  • J. Hong
    • 3
  • S. Laflamme
    • 4
  • J. Dodson
    • 5
    Email author
  1. 1.University of FloridaGainsvilleUSA
  2. 2.University of Dayton Research InstituteEglin AFBUSA
  3. 3.Applied Research Associates, IncValparaisoUSA
  4. 4.Iowa State UniversityAmesUSA
  5. 5.Fuzes Branch, Air Force Research LaboratoryMunitions DirectorateEglin AFBUSA

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