Experimental methods for the characterization of fatigue in microstructures

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Published Dec 28, 2012
DOI https://doi.org/10.3221/IGF-ESIS.23.12

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G. De Pasquale
Department of Mechanical and Aerospace Engineering, Politecnico di Torino Corso Duca degli Abruzzi 24, 10129 Torino (Italy)
A. Somà
Department of Mechanical and Aerospace Engineering, Politecnico di Torino Corso Duca degli Abruzzi 24, 10129 Torino (Italy)

Abstract

The mechanical fatigue behavior of gold microbeams is analyzed. Dedicated devices have been designed and built able to produce alternate loading on gold specimens; the electrostatic actuation is used as driving force. Gold beams are tested under both bending and tensile alternate loadings. Results were used to plot S-N curves and fatigue Goodman-Smith diagram in order to estimate the fatigue limit of the material in presence of mean and alternate stress conditions. The surface topography evolution is studied and failure modes are discussed.

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    Issue
    Vol. 7 No. 23 (2013): January 2013
    Section
    Miscellanea

    How to Cite

    De Pasquale, G., & Somà, A. (2012). Experimental methods for the characterization of fatigue in microstructures. Frattura Ed Integrità Strutturale, 7(23), Pages 114–126. https://doi.org/10.3221/IGF-ESIS.23.12

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