Structural Health Monitoring of Plate Structures Using Lamb Wave Methods

Nai Zhi Zhao; Chang Tie Huang; Xin Chen

doi:10.4028/www.scientific.net/AMR.368-373.2417

Paper Titles

Modal Decomposition Solution of Lamb Wave Scattering at Step-Like Discontinuity
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Lamb Waves Signal Analysis in Structural Health Monitoring Systems
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Application of MGM(1,N) on Concrete Temperature Prediction of RCC Dam
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Nondestructive Test on Typical Roadway Supports of a Mine via Drilling Core and Ground Penetrating Radar
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Structural Health Monitoring of Plate Structures Using Lamb Wave Methods
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The Construction Measure Control Technology of the Pylon of Sutong Bridge
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Experimental Study on Frost Resistance Durability and Service Life Prediction of Normal Cement Concrete
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Influence of Water Repellent Treatment on Corrosion of Steel in Concrete with Chloride Ingress
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Modal Analysis of Brick Walls Reinforced with Concrete Wall
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 368-373Structural Health Monitoring of Plate Structures...

Structural Health Monitoring of Plate Structures Using Lamb Wave Methods

Abstract:

In this paper，waveform is used to excite Lamb waves in the test plates during experimental testing. The optimal excitation frequency will depend on the test configuration. In order to select an excitation frequency, dispersion curves are first created to show what frequency range is best suited for Lamb wave excitation. According to dispersion curves were created for the aluminum test plates and it was concluded that a frequency below 1 MHz will be used in order to only excite the fundamental and modes. Experiments are performed on the aluminum test plates described. Experimental testing is first performed on undamaged plates in order to determine the path-to-path and test-to-test variability in Lamb wave measurements in the absence of damage. The admittance data is analyzed in order to determine if any of the PZT transducers need to be replaced because of poor bonding or mechanical failure. The sensor diagnostic technique is applied to each plate and used to ensure proper consistency between PZT transducers

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Periodical:

Advanced Materials Research (Volumes 368-373)

Pages:

2417-2420

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.368-373.2417

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Online since:

October 2011

Authors:

Nai Zhi Zhao, Chang Tie Huang, Xin Chen

Keywords:

Excitation Frequencies, Lamb Wave, SHM, Signals

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