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Iowa State University

1992

Electrical engineering (Communication systems and signal processing)

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Full-Text Articles in Physics

Study Of Beamforming Techniques For Ultrasound Imaging In Nondestructive Testing , Sleiman Riad Ghorayeb Jan 1992

Study Of Beamforming Techniques For Ultrasound Imaging In Nondestructive Testing , Sleiman Riad Ghorayeb

Retrospective Theses and Dissertations

Many of the innovations in modern materials testing technology make use of ultrasound. Therefore, the theory and application of ultrasound have become of extreme importance in nondestructive inspection of complete engineered systems. However, despite the fact that most of these ultrasound inspection techniques are based on well-established phenomena, two key problems pertaining to their application still remain unresolved. These problems can be identified as (1) the material being tested is assumed to be isotropic and homogeneous by nature, and (2) the scanning/data collection process, prior to the reconstruction scheme, is very time consuming. As a result, techniques for fast ...