Publication detail
Assessment of Early Fatigue of Power Plant Material Using Acoustic Emission Method
VLAŠIC, F. BÁRTKOVÁ, D. MAZAL, P.
Czech title
Hodnocení raných stádií únavy reaktorové oceli s využitím metody akustické emise
English title
Assessment of Early Fatigue of Power Plant Material Using Acoustic Emission Method
Type
conference paper
Language
en
Original abstract
This work presents the application of the acoustic emission technique for detection and characterization of early fatigue damage. Specifically various manifestations of the localized plastic deformation that is the precursor of microcrack formation. A nuclear Cr-Ni-Mo-V low-alloy steel has been chosen for this study. The acoustic emission signal has been correlated with the defect formation mechanisms and the registration of loading (resonant) frequency changes of the tested specimen taken by RUMUL fatigue machine. The work is focused on the analysis of the acoustic emission signal during opening and closure half-cycle.
Czech abstract
Tato práce prezentuje využití metody akustické emise pro detekci a popis raných stádií únavového poškození. Zejména se jedná o různé projevy lokalizované plastické deformace, která předchází tvorbě mikrotrhlin. Pro tuto studii byla vybrána reaktorová Cr-Ni-Mo-V nízkolegovaná ocel. Signál akustické emise byl korelaván s různými mechanismy vzniku trhlin a průběhem zatěžovací (rezonanční) frekvence zkušebních vzorků z únavového zařízení RUMUL. Práce je zaměřena na analýzu signálu akustické emise při otevírání a zavírání trhliny.
English abstract
This work presents the application of the acoustic emission technique for detection and characterization of early fatigue damage. Specifically various manifestations of the localized plastic deformation that is the precursor of microcrack formation. A nuclear Cr-Ni-Mo-V low-alloy steel has been chosen for this study. The acoustic emission signal has been correlated with the defect formation mechanisms and the registration of loading (resonant) frequency changes of the tested specimen taken by RUMUL fatigue machine. The work is focused on the analysis of the acoustic emission signal during opening and closure half-cycle.
Keywords in Czech
hodnocení únavového chování, akustická emise, iniciace trhliny, materiál pro energetiku
Keywords in English
fatigue behaviour assessment, acoustic emission, crack initiation, power plant material
RIV year
2014
Released
06.10.2014
Publisher
VUT v Brně
Location
Praha
ISBN
978-80-214-5018-9
Book
XIth European Conference on NDT - Conference proceedings
Pages from–to
P04.09-1–P04.09-8
Pages count
8
BIBTEX
@inproceedings{BUT109836,
author="František {Vlašic} and Denisa {Bártková} and Pavel {Mazal},
title="Assessment of Early Fatigue of Power Plant Material Using Acoustic Emission Method",
booktitle="XIth European Conference on NDT - Conference proceedings",
year="2014",
month="October",
pages="P04.09-1--P04.09-8",
publisher="VUT v Brně",
address="Praha",
isbn="978-80-214-5018-9"
}