Journal article
Small-scale high-cycle fatigue testing by dynamic microcantilever bending
Publication Details
Authors: | Merle, B.; Gabel, S. |
Publisher: | CAMBRIDGE UNIV PRESS |
Publication year: | 2020 |
Journal: | MRS Communications |
Pages range : | 332-337 |
Volume number: | 10 |
Issue number: | 2 |
Start page: | 332 |
End page: | 337 |
Number of pages: | 6 |
ISSN: | 2159-6859 |
eISSN: | 2159-6867 |
DOI-Link der Erstveröffentlichung: |
Abstract
The lifetime of cyclically loaded devices is often limited by the fatigue resistance of their individual phases. An advanced method is presented for measuring the high-cycle fatigue behavior of materials at the micrometer scale using a nanoindenter. It is based on the cyclic deflection of focused ion beam-fabricated microcantilevers using the continuous stiffness method (CSM). In line with experimental data on bulk nanocrystalline copper, the specimens exhibit grain coarsening followed by the formation of extrusions and a fatigue strength exponent of -0.10. The method is suitable for characterizing single phases and individual components of further complex systems.
The lifetime of cyclically loaded devices is often limited by the fatigue resistance of their individual phases. An advanced method is presented for measuring the high-cycle fatigue behavior of materials at the micrometer scale using a nanoindenter. It is based on the cyclic deflection of focused ion beam-fabricated microcantilevers using the continuous stiffness method (CSM). In line with experimental data on bulk nanocrystalline copper, the specimens exhibit grain coarsening followed by the formation of extrusions and a fatigue strength exponent of -0.10. The method is suitable for characterizing single phases and individual components of further complex systems.
