Assessment of Early Fatigue of Power Plant Material Using Acoustic Emission Method

Assessment of Early Fatigue of Power Plant Material Using Acoustic Emission Method

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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.

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.

fatigue behaviour assessment, acoustic emission, crack initiation, power plant material

fatigue behaviour assessment, acoustic emission, crack initiation, power plant material

VLAŠIC, F.; BÁRTKOVÁ, D.; MAZAL, P.

2017

06.10.2014

VUT v Brně

Praha

978-80-214-5018-9

XIth European Conference on NDT - Conference proceedings

P04.09-1

P04.09-8

8

http://ecndt2014.com/