MulticamDIC

MulticamDIC (4-camera) system using a planar setup for the measurement of 180° surface section of a wheel rim in a compression test.

The MulticamDIC is a combined, stereo-rig array, Digital Image Correlation (DIC) measurement system consisting of 4 or more (up to 16), USB3, or GigE cameras. This advanced, application-specific measurement system gives testing engineers the ability to perform large-scale and complex (contoured) surface testing of sub-(components) and structures.

Quasi-static (double-sided) tensile testing of an aluminium specimen using a (4-camera) MulticamDIC system.
MulticamDIC (16-camera) system using a planar, single-sided setup arrangement. The measured wall section was 10 m x 2.5 m in size. 29,358 individual facets/subsets were measured.

One of the key benefits of using a MulticamDIC system is that the Field-of-View (FoV) can be expanded to multiple m2 (up to ca. 25-30 m2), using the added view provided by multiple cameras (without reducing the spatial accuracy). This allows for complete measurement visualization of entire components, objects, and structures.

In a MulticamDIC system, cameras can be arranged freely in a clustered array, as opposed to being arranged in pairs. For example, the FoV area of using a (16-camera) MulticamDIC system can be enlarged by up to 8x, compared to the FoV provided by a single, stereo-rig DIC system (with the same spatial resolution).

Using the MulticamDIC system, multiple cameras can be arranged, configured & setup in a clustered array for specific materials testing applications. For example:

  • a single-sided (planar) array can be configured for the testing of large-scale and complex (contoured) surfaces (i.e. for wings, blades, beams, and walls),
  • a single-sided (cylindrical/spherical) array can be configured for the testing of round/cylindrical/spherical surfaces (i.e. for pressurized cylinders or inflated objects), and
  • a double-sided (bi-planar) array can be configured for the testing of the true strain via measurement of the cross-section

The advantage of a MulticamDIC system is that measurements can be performed using DIC of large, complex (contoured) surfaces, and double-sided geometries, that would otherwise not be possible to measure using a single, stereo-rig DIC system.

Possible material testing applications with the MulticamDIC system include; simple, quasi-static tension, compression, buckling, bending, and fracture mechanic testing, but also low-speed fatigue and inflation (pressure) testing.

The MulticamDIC system utilizes five, core advanced algorithms and concepts exclusive to Istra4D.

  1. Clustered Bundle-Adjustments Algorithm (CBAA)
  2. Central Reference Camera Perspective (CRCP)
  3. Multicamera Cluster Approach (MCA)
  4. Object Aligned Parameterization (OAP)
  5. Multicamera Subset Reference Tracking (MSURET)
MulticamDIC (4-camera) system using a bi-planar, double-sided setup arrangement.
Inflation test of a ball using an (8-camera) MutlicamDIC system. The test was developed in partnership with the University Ljubljana – Faculty of Mechanical Engineering. Burst testing for the measurement of maximum peak (major) strain before rupture can be performed effectively using the MulticamDIC system. Alternatively, compression and buckling testing can also be carried out with the MulticamDIC, since the location detection of local (peak) strain can be found because a complete, full-field, surface measurement is captured.
MulticamDIC Technical Specifications

Components

FEA Validation

FEA Validation

The FEA Validation Tool, is a free-of-charge plugin that allows users the possibility to import measurement data from an Istra4D DIC system into AnsysTM for validation against FEA results
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Camera Technology

Camera Technology

At Dantec Dynamics, we embrace, integrate and support the very latest in what camera technology has to offer so you can do more with DIC.
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PC & Hardware components

PC & Hardware components

We have a wide portfolio of standardized PCs and hardware components, including; Tower PCs, DAQ Controllers, Network Cards and FrameGrabbers
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Calibration Targets

Calibration Targets

A calibration target is a reference object that consists of a defined shape grid pattern manufactured to a surface.
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Speckle Pattern Application

Speckle Pattern Application

DIC uses a contrasting, speckle pattern as the information source for the correlation algorithm. The performance of the correlation is, among other things, dependent on the quality of the speckle pattern.
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Illumination Systems

Illumination Systems

Illumination systems vary in wavelength, illuminance output and optics. The selection of the most appropriate system is dependent on the measurement test application.
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Application Scripting and Modules

Application Scripting and Modules

The Istra4D DIC application scripting functionality allows users to initiate custom, numerical computations of application data series.
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DIC Basic User Training

DIC Basic User Training

The DIC Basic User Training Course 1.0 is the latest edition to Dantec Dynamics‘ eLearning courses. Users can now can get complete, unlimited access to this training course, anytime & anywhere
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Support & eLearning

Support & eLearning

We support and assist users in the operation of our DIC systems with your respective measurement application via the following six mediums.
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VDE 2626: Pre-Acceptance Test

VDE 2626: Pre-Acceptance Test

VDI/VDE 2626 is a standard practise that describes a general procedure for performing an accetptance & interim check for a stereoscopic Digital Image Correlation (DIC) setup.
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