Experimental methods for the characterization of fatigue in microstructures

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Published December 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

Experimental methods for the characterization of fatigue in microstructures. (2012). Fracture and Structural Integrity, 7(23), Pages 114-126. https://doi.org/10.3221/IGF-ESIS.23.12

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How to Cite

Experimental methods for the characterization of fatigue in microstructures. (2012). Fracture and Structural Integrity, 7(23), Pages 114-126. https://doi.org/10.3221/IGF-ESIS.23.12

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