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Erschienen in:
2013 | OriginalPaper | Buchkapitel
Use of Acoustic Emission Signal and X-ray Diffraction Analysis for Detection of Microstructural Changes in Cyclically Loaded AlMg Alloys
verfasst von : P. Mazal, P. Liskutin, F. Vlasic, F. Hort, J. Fiala
Erschienen in: Nondestructive Testing of Materials and Structures
Verlag: Springer Netherlands
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Abstract
This paper summarizes basic experimental results of microstructural changes during high cycle fatigue loading of AlMg alloys (EN AW-6082 and EN AW-2017). These changes are detected by using of acoustic emission (AE) method. The authors targeted the main attention on more exact identification of causes of changes of AE signal activity in the stage of fatigue damage cumulation. The method of X-ray diffraction analysis of the structure is used for explanation of this phenomenon. The results of presented experimental works indicate the connections between changes of acoustic emission signal and cyclical changes of so called “mosaic blocks” of the crystal structure identified by means of X-rays diffraction during fatigue loading of material.