The applications field of the Q400 systems is very wide spread.
The essential prerequisite for the application are

• The optical access of the component surface to be measured
• A natural pattern present on the surface or a prepared speckle pattern

It can be measured on nearly all materials like: wood, metals, plastics, (metal) foams, rubber, composites, paper, etc.

Typical applications:

• Material testing for the determination of material parameters such as Young's modulus, Poisson number, u.v.m.
• Component testing: Component tests, strength tests, stress tests, test benches, temperature chambers, tensile testing machines
• Validation of FEM simulations
• Crack propagation, crack growth
• Delamination tests
• Fracture Mechanics
• Dynamic tests: crash tests, pedestrian safety, airbag tests, rapid tensile tests
• Vibration measurement, vibration tests
• Fatigue tests, Relaxation tests
• Measurement of thermal expansion coefficients

To the applications examples

Deformation analysis & Component testing

Material testing

Vibration analysis

Pattern recognition

Digital image correlation is a camera based technique for the measurement of deformations on object surfaces. The method tracks the grey value pattern (speckle pattern") in small neighborhoods ("subsets" or "facettes") shown light blue in the camera images.

Major strain E1 of the image sequence.

3D DIC

During the object deformation stereo images are recorded with two cameras. The stereo correlation between the left and right images measures the geometry and position of the object at every load stage.

The two shown images are recorded simultaneously with the left and right camera of a stereo system.

Time Course

The temporal correlation between reference state and deformed state calculates the 3D displacement and 3D deformation of the object.

Modular software package with integrates

• Camera control
• Automatic Real time calibration
• Images acquisition
• Analysis

Import and export of external image sources (e.g., high-speed camera, microscope)

Visualization of the spatially resolved measurement results as a 2D color overlay or as a 3D representation

Data display on points, lines, polygonal lines as well as circular and polygonal areas

Definition of "virtual strain gauge"

Definition of "virtual extensometers" with a definable length

Temporal diagram plots of variables

Spatial variable diagrams of polygonal line sections

Multiple possibilities of data export (ASCII, STL, HDF5)

Generation of AVI videos and image export of results

Integrated analysis modules (scripting):

• Automatic calculation of complex measured variables
• Generation of results diagrams
• The scope of delivery includes a wide range of evaluation modules e.g. for the determination of material parameters
• Easy adaptation of the analysis modules by the user or LIMESS