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Proceedings Paper

Full-field dynamic displacement and strain measurement using pulsed and high-speed 3D image correlation photogrammetry
Author(s): Timothy Schmidt; John Tyson; Konstantin Galanulis
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Paper Abstract

3D image correlation is a robust method for measuring full-field displacements and strains using a calibrated pair of video cameras. Underlying principles and benefits are reviewed, and the method is compared to both 3D ESPI and 2D image correlation. Several applications combining image correlation photogrammetry with stroboscopic illumination and/or high-speed video cameras are presented. Operational strains in ionic polymeric muscle samples and electro-restrictive actuators are determined. The use of short-duration white light pulses to study automobile tires on road wheels at speeds up to 150 miles per hour is demonstrated. Initial work measuring strains on an 18" flywheel in a spin pit at up to 35,000 rpm is described. A notched rubber dogbone sample is pulled to failure at 125% strain in 38 milliseconds, and hundreds of full-field strain maps are captured. This paper includes discussion of sample preparation methods and special lighting systems, including pulsed arc lamps and pulsed lasers. A matrix of capability using available high speed cameras is included.

Paper Details

Date Published: 26 February 2004
PDF: 12 pages
Proc. SPIE 5265, Two- and Three-Dimensional Vision Systems for Inspection, Control, and Metrology, (26 February 2004); doi: 10.1117/12.519196
Show Author Affiliations
Timothy Schmidt, Trilion Quality Systems (United States)
John Tyson, Trilion Quality Systems (United States)
Konstantin Galanulis, GOM mbH (Germany)

Published in SPIE Proceedings Vol. 5265:
Two- and Three-Dimensional Vision Systems for Inspection, Control, and Metrology
Bruce G. Batchelor; Heinz Hugli, Editor(s)

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