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Detection of a Submillimeter Notch-Type Defect at Multiple Orientations by a Lamb Wave A0 Mode at 550 kHz for Long-Range Structural Health Monitoring Applications. [PDF]
Sensors (Basel)Capineri L, Taddei L, Marino Merlo E.
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LAMB WAVES IN A POROELASTIC PLATE
Journal of Computational Acoustics, 2013In this paper we consider the propagation of Lamb waves in a poroelastic plate containing a linear crack, the special case where the surface of the plate is unloaded, by employing the Wiener-Hopf technique. The problem we solve here is a mathematically interesting toy problem. Physically speaking the more reasonable problem would be to consider there
Gilbert, Robert P. +2 more
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Lamb Wave Frequency Diverse Array
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2022The imaging method based on the conventional phased array (PA) can only realize angle focusing. To break through the above limitations, frequency diverse array (FDA) is first introduced from radar to Lamb wave, which opens up a possibility to realize angle-range focusing in damage localization. The energy pattern of FDA without considering the features
Yanfeng Lang +3 more
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The interaction of Lamb waves with defects
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1992The interaction of individual Lamb waves with a variety of defects simulated by notches is investigated using finite-element analysis, and the results are checked experimentally. Excellent agreement is obtained. It is shown that a 2-D Fourier transform method may be used to quantify Lamb wave interactions with defects.
D N, Alleyne, P, Cawley
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Localization of notches with Lamb waves
The Journal of the Acoustical Society of America, 2003A time–frequency representation (TFR) is used to analyze the interaction of a multimode and dispersive Lamb wave with a notch, and then serves as the basis for a correlation technique to locate the notch. The experimental procedure uses a laser source and a dual-probe laser interferometer to generate and detect Lamb waves in a notched plate.
Rüdiger, Benz +3 more
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IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1998
Lamb waves are extensively involved in plate structure inspection because of their guided nature. However, their dispersive nature often limits their use in flaw detection. In this paper we show that the use of a time-reversal mirror (TRM) allows to automatically compensate for the dispersive nature of Lamb waves.
R K, Ing, M, Fink
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Lamb waves are extensively involved in plate structure inspection because of their guided nature. However, their dispersive nature often limits their use in flaw detection. In this paper we show that the use of a time-reversal mirror (TRM) allows to automatically compensate for the dispersive nature of Lamb waves.
R K, Ing, M, Fink
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IEEE Symposium on Ultrasonics, 2002
Tomographic imaging of the condition of tin materials has been performed using Lamb waves. Lamb waves were generated in thin sheets of aluminum submerged in water using an immersion transducer set at the critical angle. An identical transducer at a fixed separation detected energy radiated back into the water by the propagating Lamb wave.
D.P. Jansen, D.A. Hutchins
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Tomographic imaging of the condition of tin materials has been performed using Lamb waves. Lamb waves were generated in thin sheets of aluminum submerged in water using an immersion transducer set at the critical angle. An identical transducer at a fixed separation detected energy radiated back into the water by the propagating Lamb wave.
D.P. Jansen, D.A. Hutchins
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Long-Wave Asymptotics of Lamb Waves
Mechanics of Solids, 2017The six-dimensional complex formalism is used to obtain equations for determining long-wave asymptotics of symmetric fundamental modes of Lamb waves in an anisotropic layer. Analytic expressions are obtained for long-wave asymptotics of phase velocities of Lamb waves propagating in an isotropic layer.
R. V. Goldstein, S. V. Kuznetsov
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