Title: Non-Destructive Evaluation of Kissing Bonds using Local Defect Resonance (LDR) Spectroscopy: A Simulation Study
Authors: Delrue, Steven ×
Van Den Abeele, Koen
Tabatabaeipour, Seyed Morteza
Hettler, Jan #
Issue Date: May-2015
Host Document: Physics Procedia vol:70 pages:648-651
Conference: International Congress on Ultrasonics edition:2015 location:Metz date:10-14 May 2015
Abstract: With the growing demand from industry to optimize and
further develop existing Non-Destructive Testing & Evalu-
ation (NDT&E) techniques or new methods to detect and
characterize incipient damage with high sensitivity and
increased quality, a lot of research has been performed to
better understand the typical behavior of kissing bonds,
such as delaminations and cracks. Recently, it has been
shown experimentally that the nonlinear ultrasonic re-
sponse of kissing bonds could be enhanced by using Local
Defect Resonance (LDR) spectroscopy. LDR spectroscopy
is an efficient NDT technique that takes advantage of the
characteristic frequencies of the defect (defect resonances)
in order to provide maximum acoustic wave-defect inter-
action. In fact, for nonlinear methodologies, the ultrasonic
excitation of the sample should occur at either multiples
or integer ratios of the characteristic defect resonance fre-
quencies, in order to obtain the highest signal-to-noise re-
sponse in the nonlinear LDR spectroscopy.
In this study, the potential of using LDR spectroscopy for
the detection, localization and characterization of kissing
bonds is illustrated using a 3D simulation code for elas-
tic wave propagation in materials containing closed but
dynamically active cracks or delaminations. The model
allows to reveal the presence of local defect resonances,
to establish the link between several types of defects and
their characteristic resonances and to assist in the further
design and testing of LDR spectroscopy.
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Physics, Campus Kulak Kortrijk
Physics and Astronomy - miscellaneous
× corresponding author
# (joint) last author

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