Response of a Focused Transducer Facing a Rigid Reflector
Date
Authors
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Authors
Research Projects
Organizational Units
Journal Issue
Is Version Of
Versions
Series
Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.
Department
Abstract
Focused ultrasonic transducers can be useful in material characterization and tissue property measurement because of the improved signal to noise ratio as compared to flat transducers. To fully understand the transducer output, it is useful to know the system transfer function or impulse response of a focused transducer first acting as a transmitter and then receiving the signal reflected off a rigid plane. The resulting received pressure of a pulse-echo system can also be characterized in terms of a diffraction correction factor. The determination of the impulse response or diffraction correction factor is well understood for flat disk transducers, but is more complex for focused transducers.