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A New Fatigue Testing Apparatus Model and Parameter Identification

[+] Author Affiliations
Michael Falco, Ming Liu, David Chelidze

University of Rhode Island, Kingston, RI

Paper No. DETC2010-29107, pp. 1007-1012; 6 pages
  • ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 5: 22nd International Conference on Design Theory and Methodology; Special Conference on Mechanical Vibration and Noise
  • Montreal, Quebec, Canada, August 15–18, 2010
  • Conference Sponsors: Design Engineering Division and Computers in Engineering Division
  • ISBN: 978-0-7918-4413-7 | eISBN: 978-0-7918-3881-5
  • Copyright © 2010 by ASME


Recently, a novel fatigue testing rig was designed and constructed to investigate the interplay between a fatigue crack evolution and structural dynamics. The aim of this study is to build a simple nonlinear spring-mass-damper model for this testing apparatus and identify all related parameters. A set of forced vibration tests were conducted with different hardware configurations and excitation signals to understand dynamic properties of different components of the rig and present nonlinearities. The system parameters were identified using standard modal analysis and nonlinear system identification approaches.

Copyright © 2010 by ASME
Topics: Fatigue testing



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