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Related Experiment Video

Updated: Jan 9, 2026

Intermediate Strain Rate Material Characterization with Digital Image Correlation
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Enhancing the Resolution Utilization for DIC Measurement of Slender Components Using Shear Imaging.

Yinhang Ma1, Kangjiang Lv1, Zhuoxuan Song1

  • 1School of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China.

Sensors (Basel, Switzerland)
|December 11, 2025
PubMed
Summary

A new virtual multi-camera digital image correlation (DIC) method uses Michelson shear devices to improve resolution utilization for slender components. This cost-effective approach enables high-resolution deformation measurement without extra cameras.

Keywords:
Michelson shear devicedigital image correlationresolution utilizationslender object

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Area of Science:

  • Mechanical Engineering
  • Optical Measurement Techniques
  • Materials Science

Background:

  • Digital image correlation (DIC) is a key technique for full-field deformation measurement.
  • Slender components often underutilize DIC's spatial resolution due to their high aspect ratio.
  • Existing methods may require complex setups or additional cameras for high-resolution measurements.

Purpose of the Study:

  • To propose a novel virtual multi-camera DIC method for enhanced resolution utilization in slender component measurement.
  • To improve the cost-effectiveness and practicality of DIC systems in constrained environments.
  • To enable high-resolution full-field morphology and deformation measurements of slender components.

Main Methods:

  • Integration of a conventional dual-camera setup with two Michelson shear devices (MSDs).
  • Each MSD splits the component's image, projecting segments onto the same sensor to enhance resolution.
  • System calibration to establish extrinsic parameters for stitching 3D data from different regions.

Main Results:

  • Successful experimental validation using translation and bending tests.
  • Accurate full-field morphology and deformation measurements achieved.
  • Sub-pixel level agreement demonstrated in overlapping measurement regions.

Conclusions:

  • The proposed virtual multi-camera DIC method effectively enhances resolution utilization for slender components.
  • This approach provides a practical and cost-effective solution for high-resolution DIC measurements.
  • The method overcomes limitations of conventional DIC in measuring high-aspect-ratio structures.