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Variable Amplitude Fatigue Testing Apparatus and Its Dynamical Characterization

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Structural Health Monitoring, Photogrammetry & DIC, Volume 6

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Abstract

A modified version of variable amplitude fatigue testing rig suitable for studying the effects of crack breathing phenomenon under variable R-ratios is presented. This system is intended to investigate the interaction between fatigue damage evolution and structural dynamics, and apply the acquired understanding to practical fatigue life prediction. Generalized frequency response function, sine-sweep, and restoring force surface methods were used to identify and characterize nonlinearities, and estimate the corresponding parameters. A simple, two-degrees-of-freedom model development and experimentally validation are also presented.

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Authors and Affiliations

  1. Mechanical, Systems and Industrial Engineering Department, University of Rhode Island, Kingston, RI, USA

    Hewenxuan Li & David Chelidze

Authors
  1. Hewenxuan Li
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  2. David Chelidze
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Corresponding author

Correspondence to David Chelidze .

Editor information

Editors and Affiliations

  1. Department of Mechanical Engineering, University of Massachusetts, Lowell, Massachusetts, USA

    Christopher Niezrecki

  2. Kettering University, Flint, Michigan, USA

    Javad Baqersad

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© 2019 The Society for Experimental Mechanics, Inc.

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Li, H., Chelidze, D. (2019). Variable Amplitude Fatigue Testing Apparatus and Its Dynamical Characterization. In: Niezrecki, C., Baqersad, J. (eds) Structural Health Monitoring, Photogrammetry & DIC, Volume 6. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-74476-6_19

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  • DOI: https://doi.org/10.1007/978-3-319-74476-6_19

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-74475-9

  • Online ISBN: 978-3-319-74476-6

  • eBook Packages: EngineeringEngineering (R0)

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