Title: Study of metal timber join by Acoustic Emission method

Authors: Lubos Pazdera, Marta Korenska, Jaroslav Smutny

Addresses: Faculty of Civil Engineering, Department of Physics, Brno University of Technology, Zizkova 17, 602 00 Brno, Czech Republic. ' Faculty of Civil Engineering, Department of Physics, Brno University of Technology, Zizkova 17, 602 00 Brno, Czech Republic. ' Faculty of Civil Engineering, Department of Railway Construction and Structures, Brno University of Technology, Zizkova 17, 602 00 Brno, Czech Republic

Abstract: Actual behaviour and general load carrying capacity of timber structures depends primarily on the load bearing capacity of joints. The present paper deals with slotted-plate steel-to-timber joints. In addition, innovative measuring methods were used to determine the strength of the metal-wood-metal structure. One of them was the acoustic emission method, which belongs to the group of non-destructive testing methods. It is to be noted that the acoustic emission method responds to the defect generation much sooner than the visual or any other method. The time-frequency analysis can play a central role in the signal analysis.

Keywords: ultrasonic testing; acoustic emission; metal-timber join; time-frequency technique; short time Fourier transform; STFT; steel; connections; nondestructive testing; NDT; load carrying capacity; timber structures.

DOI: 10.1504/IJMMP.2006.011650

International Journal of Microstructure and Materials Properties, 2006 Vol.1 No.3/4, pp.353 - 363

Published online: 07 Dec 2006 *

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