Paper Title:
Application of Phased Array Antenna Technique in Structural Damage Detection
  Abstract

Over decades phased array antenna technique attracts much more attention in Lamb wave based structural damage detection. Lamb wave generated by the piezoelectric wafers omnidirectionally could be steered at a specific direction during its propagation. Thus, the wave beam steering and focusing has been established, the location of structural damage is done with pulse-echo method by wave propagation. However, the detection accuracy will decrease as side bands energy leakage during wave propagation, so, signals to be generated have to be modified by window tone burst in order to concentrate energy in main bands and minimize the effect of dispersion side bands. In this paper, signals modified by Hanning-windowed tone burst was used to decrease the effect of side bands energy leakage, the results improved the detection accuracy better than signals without window tone burst and show good agreement with theoretical results. Meanwhile, A numerical simulation of aluminium plate demonstrates that phased array antenna technique is feasible in structural damage detection.

  Info
Periodical
Advanced Materials Research (Volumes 368-373)
Chapter
Chapter 3: Security and Life Cycle Engineering Design of Civil Engineering
Edited by
Qing Yang, Li Hua Zhu, Jing Jing He, Zeng Feng Yan and Rui Ren
Pages
1667-1671
DOI
10.4028/www.scientific.net/AMR.368-373.1667
Citation
Y. Zhang, L. Yu, Y. J. Yan, Y. Guo, "Application of Phased Array Antenna Technique in Structural Damage Detection", Advanced Materials Research, Vols. 368-373, pp. 1667-1671, 2012
Online since
October 2011
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Price
$32.00
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