Aufsatz in einer Fachzeitschrift
Small-scale high-cycle fatigue testing by dynamic microcantilever bending
Details zur Publikation
Autor(inn)en: | Merle, B.; Gabel, S. |
Verlag: | CAMBRIDGE UNIV PRESS |
Publikationsjahr: | 2020 |
Zeitschrift: | MRS Communications |
Seitenbereich: | 332-337 |
Jahrgang/Band : | 10 |
Heftnummer: | 2 |
Erste Seite: | 332 |
Letzte Seite: | 337 |
Seitenumfang: | 6 |
ISSN: | 2159-6859 |
eISSN: | 2159-6867 |
DOI-Link der Erstveröffentlichung: |
Zusammenfassung, 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.
