LIMESS Messtechnik & Software GmbH
3Pages

Based on a digital image correlation technique and the stereoscopic principle of the setup with two cameras objects contour, displacement and strain is measured, contactless and full field. Material- and stability tests, determination of material parameters, component tests, usage in tension test machines, validation of FEM calculations, exploration of cracks, measurements at airplane components (A380, static and dynamic), dynamic tests like crash tests, pedestrian safety tests and airbag cover optimization. Features 0 3d full field measurement of deformation , stain, displacement and geometry 0 Large range of field of view (from 1mm2 to > 100m2) 0 Powerful export for CAD or further posprocessing 0 Fast setup and short preparation time 0 Measurement of static or dynamic events 0 Comparison to FEA- Data 0 High accuracy & flexible measurement Applications Material Testing I. Tensile Test / Shear Test Biomedical, Polymer, Composite, Metal [The image shows the test setup and results for 3D image correlation measurements on a bone sample.]

LIMESS Messtechnik & Software GmbH Component Testing Automotive Passenger Airbag Test CFRP Panel compressions Test • Optimization of crack lines & airbag folding • Two high-Speed cameras (5000 fps) used for capturing images at full resolution (1 MPixel) | Result Unexpected strain-compression behavior: Crack line shows compression and not expected tension behavior (upper right image) II. Structure loaded with 600KN Complex bending behavior measure Bending Test Sample wind engine blade [Blade length 20m; AOI width 10m Natural structure of blade used for DIC

Gear wheel measurement Area of interest 5 mm2 Determination of strain gradients while loading Exploration of out-of-plane behavior Detection of area of highest strain Extraction of data and comparison to FEA data Measurement field sizes: 1mm2 until >100m2 Precision for displacement: 0,01 Pixel (1pm @ IMPixel camera and 100mm AOI width) Precision for strain: 200 pstrains (=0.02%) Camera resolution: 0,3 MPixel until 16 MPixel Frame rates: 10 fps until 750.000 fps (with high speed cameras)