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Abstract

Acoustical holography is the extension of holography into the ultrasonic domain. The basic systems for acoustical holography are the liquid-surface type and the scanning type. This article discusses the applications for acoustical holography, including inspection of large composite parts, through-transmission breast imaging system, inspection of welds in thick materials, and inspection of sleeve-bearing stock. It describes the basic system for liquid-surface acoustical holography and scanning acoustical holography. A comparison between these techniques is also provided.

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Acoustical Holography, Nondestructive Evaluation of Materials, Vol 17, ASM Handbook, Edited By Aquil Ahmad, Leonard J. Bond, ASM International, 2018, p 353–359, https://doi.org/10.31399/asm.hb.v17.a0006474

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