Study of High-Cycle Fatigue Behaviour of Titanium Alloy Using Acoustic Emission Method

Result code in 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>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Study of High-Cycle Fatigue Behaviour of Titanium Alloy Using Acoustic Emission Method

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JL - Fatigue and fracture mechanics

OECD FORD branch

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Project

<a href="/en/project/FR-TI4%2F602" target="_blank" >FR-TI4/602: *Diagnostic complex for detecting leakage of pressure media and material defects pressure components of nuclear and thermal power plants</a><br>

Continuities

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

Publication year

2014

Confidentiality

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

Article name in the collection

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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Number of pages

8

Pages from-to

1423-1430

Publisher name

TANGER Ltd., Ostrava

Place of publication

Ostrava

Event location

Brno

Event date

May 21, 2014

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000350641700236