TY - JOUR
T1 - Guided Lamb wave-based structural health monitoring using a novel wave packet tracing method for damage localization and size quantification
AU - Kim, Inho
AU - Chattopadhyay, Aditi
N1 - Publisher Copyright:
© SAGE Publications.
PY - 2015/12/1
Y1 - 2015/12/1
N2 - In guided Lamb wave-based structural health monitoring, the interpretation of collected signals is a complex task because of the dispersive and multi-modal characteristics of guided Lamb waves. In this work, a novel wave packet tracing method for damage localization and size quantification is presented. This method involves creating time-space representations of the guided Lamb waves collected at a series of locations with a spatially dense distribution along paths at pre-selected angles with respect to the direction normal to the direction of wave propagation. The fringe patterns due to wave dispersion, which depends on the phase velocity, are selected as the primary features that carry information regarding the wave propagation and scattering. Simulated damage of various sizes, shapes, and locations is analyzed to visually and quantitatively demonstrate the wave packet tracing method.
AB - In guided Lamb wave-based structural health monitoring, the interpretation of collected signals is a complex task because of the dispersive and multi-modal characteristics of guided Lamb waves. In this work, a novel wave packet tracing method for damage localization and size quantification is presented. This method involves creating time-space representations of the guided Lamb waves collected at a series of locations with a spatially dense distribution along paths at pre-selected angles with respect to the direction normal to the direction of wave propagation. The fringe patterns due to wave dispersion, which depends on the phase velocity, are selected as the primary features that carry information regarding the wave propagation and scattering. Simulated damage of various sizes, shapes, and locations is analyzed to visually and quantitatively demonstrate the wave packet tracing method.
KW - Structural health monitoring
KW - actuator
KW - piezoelectric
KW - sensor
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U2 - 10.1177/1045389X15604406
DO - 10.1177/1045389X15604406
M3 - Article
AN - SCOPUS:84948436712
SN - 1045-389X
VL - 26
SP - 2515
EP - 2530
JO - Journal of Intelligent Material Systems and Structures
JF - Journal of Intelligent Material Systems and Structures
IS - 18
ER -