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Sizing of interface delamination in a composite T-joint using time-of-flight of Lamb Waves
Published in
2011
Volume: 22
   
Issue: 8
Pages: 757 - 768
Abstract
The quantitative evaluation of the size of interface delamination in a glass/ epoxy (GFRP) composite T-joint is discussed here. An expression was derived to estimate the size of interface delamination from Time-of-Flight and group velocities of the fundamental anti-symmetric Lamb mode, Ao. Numerical simulations were carried out on [02/902] s GFRP T-joint with different size of interface delaminations and validated with air-coupled ultrasonic experiments. The proposed methodology requires a baseline signal from a healthy region. Supplementary equations were presented to determine the error induced in the estimation of size of the interface delamination, due to mis-alignment during data collection. © 2011 The Author(s).
About the journal
JournalJournal of Intelligent Material Systems and Structures
ISSN1045389X
Open AccessNo
Concepts (17)
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    AIR-COUPLED
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    Anti-symmetric
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    Data collection
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    Different sizes
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    Group velocities
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    INTERFACE DELAMINATION
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    LAMB MODES
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    Lamb wave
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    Quantitative evaluation
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    T JOINTS
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    T-JOINT
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    TIME OF FLIGHT
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    Ultrasonic experiments
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    Elastic waves
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    Steel sheet
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    Ultrasonic waves
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    Delamination