Název: Why monitor acoustic emissions during nanomechanical tests?
Autoři: Čtvrtlík, Radim ; Václavek, L. ; Tomáštík, J.
Typ dokumentu: Příspěvky z konference
Konference/Akce: International Conference on Local Mechanical Properties /14./, Prague (CZ), 20191106
Rok: 2020
Jazyk: eng
Abstrakt: Acoustic Emissions (AE) monitoring has been proved as an effective non-destructive technique at the macro scale. Nevertheless, it may also be employed at nano/micro scale during nanomechanical and nanotribological testing. Local mechanical properties of surfaces or micro object are routinely explored using nanoindentation, scratch test or dynamic impact tests that are evaluated based on analysis of depth-load-time records or microscopic observation of residual indents, scratch grooves or impact craters, respectively. Although these approaches have been proven to be sufficient in most cases for a variety of materials, there are many situations where they do not provide sufficient information for a complex understanding of the deformation response. On the other hand, analysis of AE signals generated during these tests may provide valuable complementary information and provide some insight into the dynamics of phenomena like cracking, phase transitions, plastic instabilities, etc.\n
Klíčová slova: acoustic emission; indentation; scratch test; thin films
Zdrojový dokument: Acta Polytechnica CTU Proceedings, ISBN 978-80-01-06735-2, ISSN 2336-5382

Instituce: Fyzikální ústav AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0315401

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-432705


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Fyzikální ústav
Konferenční materiály > Příspěvky z konference