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2D DIC

2D Digital Image Correlation:Simply See More Download
Max. measurement range
  • Dependent on the videoXtens
Temperature range
  • Ambient temperature -80°C to +360°C High temperature
Type of test + change in width
  • Tensile, compression, flexure tests Cyclic tests Strain distribution Test re-run
Material
  • Composites Metals Plastics Rubber, elastomers Components Geotextiles Others

2D Digital Image Correlation:Simply See More

2D digital image correlation visualizes deformations and strain over the entire visible specimen surface. The non-contact videoXtens extensometer records image series during the test, compares image by image, and calculates the displacement in a pre-defined facet field, where each facet includes a specified number of camera pixels. This data is used to create two-dimensional color strain maps, which allow you to analyze the specimen behavior at a glance.

Key advantages and features

Key advantages and features

Why use 2D Digital Image Correlation (DIC)?
Convenient evaluation with testXpert III
Easy specimen preparation
DIC setup:go with the (work) flow

Why use 2D Digital Image Correlation (DIC)?

Through 2D DIC, in combination with standard strain measurement, you gain valuable additional information on specimen behavior for specimens that maintain a plane surface throughout the test.

The ZwickRoell 2D DIC option makes local strains visible in 2D over the entire specimen surface:

  • Color displays of specimen behavior provide indications of inhomogeneous local strain and other special features.
  • You can also analyze complex specimens with notches or non-homogeneous materials.
  • Errors in the test arrangement, such as inaccurate specimen alignment quickly become visible.

Convenient evaluation with testXpert III

The 2D DIC option was developed in-house at ZwickRoell and is fully integrated in testXpert III. With just one software system, live measurement and 2D DIC-analysis are performed and all measured values are managed.

  • Measured values, test results and images are stored, managed and evaluated together. You can easily and extensively analyze all measured values with each other. Strain values of a gauge length defined in the 2D DIC can be displayed and evaluated in a stress-strain curve.
  • You will reach your goal quickly and with just a few clicks: by specifying a workflow, you are guided step by step from setup to analysis and display of the measured values.
  • Prepare analysis parameters once, then save them in testXpert and use them over and over.
  • Reliable results: the 2D DIC-measured values are synchronized with the measured values of the testing machine.
  • Through the test re-run option for each evaluation a new specimen is added whenever you choose. This makes evaluation retrievable.

Easy specimen preparation

A high-contrast pattern can simply and quickly be sprayed onto the specimen.

Additional markings are not necessary for the live strain measurement. Virtual gauge marks are placed on the existing pattern through the software.

DIC setup:go with the (work) flow

Operating the 2D DIC is simple and intuitive. By specifying a workflow, you are guided step by step from setup to analysis and display of the measured values.

Technical overview

2D Digital Image Correlation (DIC):Simply Analyze

2D Digital Image Correlation (DIC):Simply Analyze

Analysis tools
Creation of graphs / diagrams
Export options

Analysis tools

Analysis tools in 2D DIC

  • Measuring points: these can be placed in any desired locations within a strain map.
  • Gauge lengths or virtual extensometers: establish two points on the strain map, between which the change in distance is to be determined.
  • Intersections: the strain progression is visualized along the lines. The intersection deforms with the specimen. In addition, there is an intersection stack through which selected time steps are displayed in a diagram, making the time-based development of the intersection visible.
  • Virtual strain gauges: for the virtual strain gauges, you can individually define the position, size and angle. In addition, multiple virtual strain gauges can be placed on top of each other at different angles. For example, two virtual strain gauges can be combined to form a biaxial strain gauge with measuring grids oriented at 90° to each other. The virtual strain gauges can save you a lot of time and cost.

Creation of graphs / diagrams

Graphical display / diagram

The following measured values can be displayed as strain maps and in diagrams:

  • Displacements in X direction
  • Displacements in Y direction
  • Local longitudinal strains Ɛx
  • Local transverse strains Ɛy
  • Local shear strains Ɛxy
  • Maximum normal strains
  • Minimum normal strains
  • Poisson's ratio
  • Equivalent Von Mises strains

Vector maps can be displayed in all strain maps, showing the main strain directions.

Export options

Export options:

  • Export of individual data in .csv
  • Export of the video in .avi
  • Export color map / diagram in .bmp

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2D DIC

2D DIC, videoXtens and testXpert III:perform 2D DIC analysis and live strain measurement with a single testing software
The new 2D DIC (Digital Image Correlation) option for videoXtens allows you to carry out live strain measurement easily and efficiently, expanding your evaluation options via testXpert III.
to 2D DIC

Downloads

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  • Product Information:2D Digital Image Correlation (DIC) PDF 1 MB
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