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Surface-wave nondestructive testing using 1-dimensional acoustic holography

Surface-wave nondestructive testing using 1-dimensional acoustic holography

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A new method of surface nondestructive testing using 1-dimensional acoustic holography has been demonstrated. A simulated defect 0.5 mm in diameter and 1 μm thick has been clearly resolved using 60 MHz acoustic surface waves, propagating along a quartz substrate.

References

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      • R.M. de la Rue , R.F. Humphryes , I.M. Mason , E.A. Ash . Acoustic-surface-wave amplitude and phase measurements using laser probes. Proc. IEE , 2 , 117 - 126
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      • A.F. Metherell , H.M.A. El-Sum , L. Larmore . (1969) , Acoustic holography—Vol. 1.
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      • A.L. Boyer , J.A. Jordan , D.L. van Rooy , P.M. Hirsch , L.B. Lesem . (1970) , Acoustic holography—Vol. 2.
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