Dynamic Characterization of Satellite Components through Non-Invasive Methods

  • David Macknelly
  • Josh Mullins
  • Heather Wiest
  • David Mascarenas
  • Gyuhae Park
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

The rapid deployment of satellites is hindered by the need to flight-qualify their components and the resulting mechanical assembly. Conventional methods for qualification testing of satellite components are costly and time consuming. Furthermore, full-scale vehicles must be subjected to launch loads during testing. This harsh testing environment increases the risk of component damage during qualification. The focus of this research effort was to assess the performance of Structural Health Monitoring (SHM) techniques as a replacement for traditional vibration testing. SHM techniques were applied on a small-scale structure representative of a responsive satellite. The test structure consisted of an extruded aluminum space-frame covered with aluminum shear plates, which was assembled using bolted joints. Multiple piezoelectric patches were bonded to the test structure and acted as combined actuators and sensors. Various methods of SHM were explored including impedance-based health monitoring, wave propagation, and conventional frequency response functions. Using these methods in conjunction with finite element modelling, the dynamic properties of the test structure were established and areas of potential damage were identified and localized. The adequacy of the results from each SHM method was validated by comparison to results from conventional vibration testing. LA-UR 10-07115.

Keywords

Torque Foam Rubber Sine Doyle 

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • David Macknelly
    • 1
  • Josh Mullins
    • 2
  • Heather Wiest
    • 3
  • David Mascarenas
    • 4
  • Gyuhae Park
    • 4
  1. 1.Dept. of Mechanical Eng.Imperial College LondonLondonUK
  2. 2.Dept. of Civil and Environmental Eng.Vanderbilt UniversityNashvilleUSA
  3. 3.Dept. of Mechanical Eng.Rose-Hulman Inst. of Tech.Terre HauteUSA
  4. 4.The Engineering InstituteLos Alamos National LaboratoryLos AlamosUSA

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