SOLUTION SHEETFlexDIC System

Digital Image Correlation (DIC) system for advanced
materials testing and motion analysis applications inindustry & academia

A real measurement utility for any materials testing application
The FlexDIC is a Digital Image Correlation (DIC) measurement systemdesigned as a flexible, robust and multi-functional industrial & academic
utility for a wide range of materials testing & motion analysis applications.

Istra4D 2D-overlay visualizationof Lg. Principle Strain 1 (MajorStrain) of a notched, aluminium
coupon in a quasi-static tensile
test.

This easy-to-use system can perform all your testing needs allowing any
user to quickly perform accurate & precise measurements for displacement,
contour (shape), strain, and (discrete) kinematic quantities of tracked points.
The FlexDIC is completely modular and can be upgraded with additional
lenses, calibration targets, illumination systems, and also with additional
cameras turning the system into a MulticamDIC system.

Key benefits
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Complete & fully equipped measurement system
Utilizes a 3-camera configuration (as standard)
Incorporates USB3 or GiGE vision technology with either; 5 Mpx,12.3 Mpx, or 24.4 Mpx cameras
Upgradable system (i.e. to a MulticamDIC system)
Real-time correlation & Point (marker) tracking
Can be retrofitted with a stereoscopic microscope
Operates in either; DAQ Triggered or Master/Slave mode

Istra4D Point Tracking function of arobot arm with 3-tracked markers.

Everything that is needed in a versatile DIC system
The FlexDIC is a complete & fully equipped measurement system supplied (asstandard) with one Laptop PC, one DAQ Controller, lenses, calibration targets,
mounting, and a tripod. The measurement performance of the FlexDIC system
is harnessed using either; 1x, 2x, or 3x CMOS cameras with USB3 or GiGE Visiontechnology. (A standard FlexDIC system consists of a 3-camera system). Users
have the option of selecting; 5 Mpx, 12.3 Mpx, or 24.4 Mpx cameras.
The system can operate in either; DAQ Triggered or Master/Slave mode. Using
the DAQ Controller, the FlexDIC can read in up to 8x +/-10V analogue signals(i.e. for a load cell or LVDT). It also allows up to 2 analogue outputs to be readout from Istra4D.

Istra4D 2D-overlay visualization of
displacement of a quasi-static
bending test indicating the FoV fromutilizing 3-cameras.

Istra4D Point Tracking function ofspinning fan blade with 4-trackedmarkers.

Setup of the FlexDIC system

The 3rd Reference Camera Perspective (CRCP)
Since 3D-information can only be calculated from objects that are imaged by atleast 2 cameras, the Field-of-View (FoV) is limited to the overlap between eachcamera-pair FoVs. Achieving an overlap can be difficult, partially, due to thestereo-angle tradeoff, but also for the measurement of an object that is nonplanar or curved.
The solution to overcoming this restriction is to use an additional perspective
provided by a 3rd central camera positioned between the two outer cameras.
The central camera is then assigned as the “reference” camera. This approach is
known as the “Central Reference Camera Perspective (CRCP)”.

Schematic Diagram of a (traditional) 2-camera DIC setup & Schematic
Diagram of a 3-camera DIC setup
using the Central Reference Camera
Perspective (CRCP).

FlexDIC system used to measure Lg.
Principle Strain 1 (Major Strain) ofa quasi-static compression test of aplastic tube.
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When a CRCP is directed onto a 2-camera FoV, the outer camera FoVs can inturn be split & segmented with the FoV provided by the CRCP. This in turnincreases the FoV of the measurement system, whilst retaining the spatial
accuracy provided by the image scale as determined by the outer cameras.
This allows for improved surface coverage on test specimens that are curved,cylindrical, or have uneven surface shapes and is particularly useful for themeasurement of corners or edges with small radii.

Schematic diagram ofa 3-camera DIC setup.

FlexDIC system used to measure the displacementof a quasi-static bending test.

Components of the FlexDIC system.

Application Notes & Success Stories

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Technical specifications
FlexDIC
Number of Cameras
Sensor, Frame Rate &Interface

1, 2 or 3
5.0 Mpx
5.0 Mpx(2448 x 2048 px) (2448 x 2048 px)@ 77 Hz@ 24 Hz
USB3 CMOS
GiGE CMOS

24.4 Mpx(5312 x 4600 px)@ 5 HzGiGE CMOS

25 mm

Std. Lens Focal Length

Adjustable

Camera Setup Configuration
Std. Field-of-View (FoV)

12.3 Mpx
12.3 Mpx(4096 x 3000 px) (4096 x 3000 px)@ 30 Hz@ 9 HzUSB3 CMOS
GiGE CMOS

500 mm (H) x 350 mm (V) (down to 10 mm x 10 mm)
850 - 1500 mm

Std. Distance-to-Object (DtO)

Measurement PerformanceStd. Spatial
Resolution

2 cameras

204 µm/px

122 µm/px

94 µm/px

3 cameras

112 µm/px

67 µm/px

52 µm/px

Std. In-Plane
Resolution

2 cameras

2 µm

1 µm

1 µm

3 cameras

1 µm

1 µm

1 µm

4 µm – 20 µm

3 µm – 12 µm

2 µm – 9 µm

2 µm – 11 µm

2 µm – 6 µm

1 µm – 5 µm

2 cameras
Std. Out-ofPlane Resolution 3 cameras

10 µstrain

Strain Resolution

Order information
We offer the FlexDIC as both a pre-configured/fixed configuration system andalso as an unconfigured system.

Fixed/Standard Configuration
DSM 85600: 3-camera FlexDIC System
System

DSM 85700: 3-camera FlexDIC System

3x USB3 5.0 Mpx @ 77 Hz CMOS C-mount Cameras 3x USB3 12.3 Mpx @ 30 Hz CMOS C-mount Cameras
3x C-Mount f=16mm Lens
3x C-Mount f=16mm Lens3x C-Mount f=35mm Lens
3x C-Mount f=35mm Lens
1x Laptop PC with 1x USB-C 4-port USB-A Hub
1x Laptop PC with 1x USB-C 4-port USB-A Hub
1x DAQ Controller
1x DAQ Controller
1x Istra4D Software Package
1x Istra4D Software Packageincl. Software Platform, Camera Acquisition,incl. Software Platform, Camera Acquisition,
DAQ Triggering, 3D Correlation Evaluation,
DAQ Triggering, 3D Correlation Evaluation,
Real-time Correlation & Graphical Visualization. Real-time Correlation & Graphical Visualization.
Application Scripting Modules (free-of-charge)
Application Scripting Modules (free-of-charge)
FEA Validation Tool (free-of-charge)
FEA Validation Tool (free-of-charge)
1x 100mm Calibration Target
1x 110mm Calibration Target
1x 150mm Calibration Target
1x 150mm Calibration Target
1x XR-LED Illumination System (Red)
1x XR-LED Illumination System (Red)
1x Mounting Rail & Brackets (0.7 m)
1x Mounting Rail & Brackets (0.7 m)
1x Mounting Rail Extension Arms (1 Pair)
1x Mounting Rail Extension Arms (1 Pair)
1x Standard Tripod
1x Standard Tripod

Solution Sheet SS_0839_v1. Subject to change without notice. Copyright © 2024.
Dantec Dynamics. All Rights Reserved. www.dantecdynamics.com
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