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Three-Dimensional High-Resolution Optical/X-Ray Stereoscopic Tracking VelocimetryMeasurement of three-dimensional (3-D) three-component velocity fields is of great importance in a variety of research and industrial applications for understanding materials processing, fluid physics, and strain/displacement measurements. The 3-D experiments in these fields most likely inhibit the use of conventional techniques, which are based only on planar and optically-transparent-field observation. Here, we briefly review the current status of 3-D diagnostics for motion/velocity detection, for both optical and x-ray systems. As an initial step for providing 3-D capabilities, we have developed stereoscopic tracking velocimetry (STV) to measure 3-D flow/deformation through optical observation. The STV is advantageous in system simplicity, for continually observing 3-D phenomena in near real-time. In an effort to enhance the data processing through automation and to avoid the confusion in tracking numerous markers or particles, artificial neural networks are employed to incorporate human intelligence. Our initial optical investigations have proven the STV to be a very viable candidate for reliably measuring 3-D flow motions. With previous activities focused on improving the processing efficiency, overall accuracy, and automation based on the optical system, the current efforts is directed to the concurrent expansion to the x-ray system for broader experimental applications.
Document ID
20050031578
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Cha, Soyoung S.
(Illinois Univ. Chicago, IL, United States)
Ramachandran, Naryanan
(BAE Systems Huntsville, AL, United States)
Date Acquired
August 22, 2013
Publication Date
January 1, 2005
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: 2004 ASME International Mechanical Engineering Congress
Location: Anaheim, CA
Country: United States
Start Date: November 13, 2004
Sponsors: American Society of Mechanical Engineers
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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