Thermography and acoustic emission for monitoring the fracture of aluminium plates

E. Z. Kordatos, D. G. Aggelis, T. E. Matikas

Onderzoeksoutput: Chapterpeer review

Samenvatting

Acoustic Emission (AE) supplies information on the fracturing behavior of different materials. In this study, AE activity was recorded during fatigue experiments in metal coupons with a V-shape notch which were loaded in fatigue until final failure. AE parameters exhibit a sharp increase approximately 1000 cycles before than final failure. Therefore, the use of acoustic emission parameters is discussed both in terms of characterization of the damage mechanisms, as well as a tool for the prediction of ultimate life of the material under fatigue. Additionally, an innovative nondestructive methodology based on lock-in thermography is developed to determine the crack growth rate using thermographic mapping of the material undergoing fatigue. The thermographic results on the crack growth rate of aluminium alloys were then correlated with measurements obtained by the conventional compliance method, and found to be in agreement.

Originele taal-2English
TitelNondestructive Testing of Materials and Structures :Proceedings of NDTMS-2011, Istanbul, Turkey,May 15-18, 2011
RedacteurenOral Buyukozturk
UitgeverijSpringer
Pagina's519-524
Aantal pagina's6
ISBN van geprinte versie9789400707221
DOI's
StatusPublished - 1 dec 2012

Publicatie series

NaamRILEM Bookseries
Volume6
ISSN van geprinte versie2211-0844
ISSN van elektronische versie2211-0852

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