Počet záznamů: 1
High frequency acoustic emission monitoring in nano-impact of alumina and partially stabilised zirconia
- 1.0561956 - FZÚ 2023 RIV CH eng J - Článek v odborném periodiku
Beake, B.D. - Čtvrtlík, Radim - Harris, A.J. - Martin, A.S. - Václavek, L. - Maňák, Jan - Ranc, V.
High frequency acoustic emission monitoring in nano-impact of alumina and partially stabilised zirconia.
Materials Science and Engineering A Structural Materials Properties Microstructure and Processing. Roč. 780, April (2020), č. článku 139159. ISSN 0921-5093. E-ISSN 1873-4936
Grant CEP: GA MŠk LM2015087
Institucionální podpora: RVO:68378271
Klíčová slova: micromechanics * electron microscopy * fracture mechanics/fracture behavior/fatigue * ceramics
Obor OECD: Ceramics
Impakt faktor: 5.234, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.msea.2020.139159
High frequency acoustic emission monitoring is proving a useful technique in improving the understanding of deformation processes occurring in nano- and micro-scale mechanical contacts. In this study AE monitoring has been used to investigate the fracture of alumina and MgO-partially stabilised zirconia (PSZ) at high strain rate in repetitive nano-impact tests with cube-corner and 5 μm radius spherical diamond indenters. Focussed ion beam milling of impact craters revealed sub-surface intergranular cracking on alumina and sub-surface transgranular cracking on PSZ. The evolution of AE through the test was strongly dependent on the geometry of the indenter used to create the impacts. AE energy was generally much higher when impacts cause rapid increases in penetration depth, with single high energy hits observed on abrupt depth bursts in tests with the cube corner indenter.
Trvalý link: https://hdl.handle.net/11104/0334381
Počet záznamů: 1