Study of High-Cycle Fatigue Behaviour of Titanium Alloy Using Acoustic Emission Method
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F13%3APU103678" target="_blank" >RIV/00216305:26210/13:PU103678 - isvavai.cz</a>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Study of High-Cycle Fatigue Behaviour of Titanium Alloy Using Acoustic Emission Method
Popis výsledku v původním jazyce
The paper deals with evaluation of bending fatigue behaviour of Ti-6Al-4V alloy in high-cycle area. The microstructural changes under cyclic loading have been investigated using acoustic emission method. It is one of the most important non-destructive testing methods for materials, constructions and machines. This method is based on the detection and conversion of high frequency elastic waves to electrical signals. The fatigue properties and acoustic emission characteristics have been analyzed based on the microstructural observations. In this study, acoustic emission activity of smooth specimens was recorded at different stress amplitude levels until final failure. The analysis of acoustic emission signal was primarily focused on the classification of AE hits into four different groups depending on duration, amplitude and energy. It was shown that the source damage mechanisms of acoustic emission signal from fatigue tests can be divided into three regions - stages. These regions correspond to microplastic and slip plane formation stage (evolution of the dislocation structures and surface relief creation), crack nucleation and incubation stage and crack propagation stage. The resonance frequency changes were registered during all measurements of the specimens, which were tested on the fatigue equipment RUMUL Cracktronic. It was found that the acoustic emission technique can be used as a sensitive early warning method for detecting fatigue damage.
Název v anglickém jazyce
Study of High-Cycle Fatigue Behaviour of Titanium Alloy Using Acoustic Emission Method
Popis výsledku anglicky
The paper deals with evaluation of bending fatigue behaviour of Ti-6Al-4V alloy in high-cycle area. The microstructural changes under cyclic loading have been investigated using acoustic emission method. It is one of the most important non-destructive testing methods for materials, constructions and machines. This method is based on the detection and conversion of high frequency elastic waves to electrical signals. The fatigue properties and acoustic emission characteristics have been analyzed based on the microstructural observations. In this study, acoustic emission activity of smooth specimens was recorded at different stress amplitude levels until final failure. The analysis of acoustic emission signal was primarily focused on the classification of AE hits into four different groups depending on duration, amplitude and energy. It was shown that the source damage mechanisms of acoustic emission signal from fatigue tests can be divided into three regions - stages. These regions correspond to microplastic and slip plane formation stage (evolution of the dislocation structures and surface relief creation), crack nucleation and incubation stage and crack propagation stage. The resonance frequency changes were registered during all measurements of the specimens, which were tested on the fatigue equipment RUMUL Cracktronic. It was found that the acoustic emission technique can be used as a sensitive early warning method for detecting fatigue damage.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
JL - Únava materiálu a lomová mechanika
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/FR-TI4%2F602" target="_blank" >FR-TI4/602: *Diagnostický komplex pro detekci úniků tlakových médií a materiálových vad tlakových komponent jaderných a tepelných elektráren</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2014
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
Metal 2014 - 23rd International Conference on Metallurgy and Materials
ISBN
978-80-87294-52-9
ISSN
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e-ISSN
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Počet stran výsledku
8
Strana od-do
1423-1430
Název nakladatele
TANGER Ltd., Ostrava
Místo vydání
Ostrava
Místo konání akce
Brno
Datum konání akce
21. 5. 2014
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
000350641700236