High frequency acoustic emission monitoring in nano-impact of alumina and partially stabilised zirconia

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F20%3A73600719" target="_blank" >RIV/61989592:15310/20:73600719 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26620/20:PU140213 RIV/68378271:_____/20:00561956

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0921509320302458" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0921509320302458</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2020.139159" target="_blank" >10.1016/j.msea.2020.139159</a>

Jazyk výsledku

angličtina

Název v původním jazyce

High frequency acoustic emission monitoring in nano-impact of alumina and partially stabilised zirconia

Popis výsledku v původním jazyce

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. The damage progression in tests with the spherical indenter differed between the ceramics, with more AE events near the start of the test on alumina and later in the test for PSZ. Reasons for these differences are discussed.

Název v anglickém jazyce

High frequency acoustic emission monitoring in nano-impact of alumina and partially stabilised zirconia

Popis výsledku anglicky

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. The damage progression in tests with the spherical indenter differed between the ceramics, with more AE events near the start of the test on alumina and later in the test for PSZ. Reasons for these differences are discussed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

ISSN

0921-5093

e-ISSN

—

Svazek periodika

780

Číslo periodika v rámci svazku

APR

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

"139159-1"-"139159-11"

Kód UT WoS článku

000524357800008

EID výsledku v databázi Scopus

2-s2.0-85081126242