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Experimental Mechanics

An Optimized Stereo Digital Image Correlation Setup Based on Parfocal Zoom Lenses for Full-Field Measurements at 0.5–2× Magnification

  • 08-08-2024
  • Research paper
Published in:
Authors
E. Sarvari
A. Ahadi
G. Eggeler
J. Frenzel
Published in
Experimental Mechanics | Issue 9/2024

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Abstract

The article discusses the challenges and solutions for high-magnification stereo-digital image correlation (stereo-DIC) measurements, focusing on the use of parfocal zoom lenses. It compares the performance of parfocal zoom lenses with fixed focal length lenses and extension tubes, highlighting the advantages of parfocal lenses in terms of image contrast, noise levels, and system stability. The article also provides practical guidance on speckle pattern optimization, lighting conditions, stereo-rig design, and calibration procedures. Validation experiments on superelastic NiTi wires demonstrate the accuracy and reliability of the proposed stereo-DIC setup, making it a valuable resource for researchers in experimental mechanics and materials science.
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previous article A Note of Gratitude from the Editor-in-Chief
next article The SFIR Test: An Innovative Hydrostatic Compression Test to Characterize the Volumetric Behavior of Polymeric Foams
Title
An Optimized Stereo Digital Image Correlation Setup Based on Parfocal Zoom Lenses for Full-Field Measurements at 0.5–2× Magnification
Authors
E. Sarvari
A. Ahadi
G. Eggeler
J. Frenzel
Publication date
08-08-2024
Publisher
Springer US
Published in
Experimental Mechanics / Issue 9/2024
Print ISSN: 0014-4851
Electronic ISSN: 1741-2765
DOI
https://doi.org/10.1007/s11340-024-01101-w
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