Original title: Why monitor acoustic emissions during nanomechanical tests?
Authors: Čtvrtlík, Radim ; Václavek, L. ; Tomáštík, J.
Document type: Papers
Conference/Event: International Conference on Local Mechanical Properties /14./, Prague (CZ), 20191106
Year: 2020
Language: eng
Abstract: 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
Keywords: acoustic emission; indentation; scratch test; thin films
Host item entry: Acta Polytechnica CTU Proceedings, ISBN 978-80-01-06735-2, ISSN 2336-5382

Institution: Institute of Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0315401

Permalink: http://www.nusl.cz/ntk/nusl-432705


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