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	AutoGrid® vario
	Highest flexibility for component analysis and in-process materials testing
	ViALUX provides a fast and accurate tool for the determination of forming limit curves (FLCs) of sheet metal materials. Directly connected to the testing machine, the system gives precise ac-cess to the maximum strain value just before necking and subsequent cracking occurs. The AutoGrid® software package allows to create FLCs from a set of specimens very effectively.
	With the knowledge of the original undeformed grid size, the system is able to determine a field of strain values in the range of 0.5 % to more than 100 % without any unambiguity. Grid sizes range between 1-5mm. Images sequences of up to 24x4 frames per second can be recorded. In case of the standard testing velocity of 1-2 mm ⁄ s, a punch depth resolution of less than 0.1 mm can be achieved. The system also features additional data inputs that can track different values from the testing machine. For example, press load and punch stroke can be stored with each measurement. Automatic evaluation helps to generate complete forming limit curves. All process variables of differently shaped specimen are provided to determine reliable FLC data. Advanced software features can be used to process an export the measurement data and to make reports. The system also meets the requirements of bulge or tensile testing.
	Specifications
	Measuring head amount: 4 progressive scanning CCD cameras 780 (H) x 582 (V) active pixel with high quality measuring lenses hardware: PC connection and power supply via a single 4 m cable using the firewire interface mobility: convenient transport box Computer equipment brand mark first class PC with worldwide service Environmental temperature operating: 10 … 35° C non-operating: < -40, > +70° humidity: 20% …93% non-condensing Software Microsoft Windows XP Professional full compatibility with Microsoft Office applications and other standard software Measuring volume up to 500x400x200 mm³ per image set (other volumes on de-mand) Field of data up to 12.000 measured points per single measurement, combined measurements without size limitation Calibration fixed optical setup maintaining long term calibration; automated, robust self-calibration procedure (3 min) using certified calibration gauge Measuring time 3-5 min for a complete analysis of one image set Results 3D shape with coordinates x,y,z [mm] at grid line crossing points, engineering strain ε [%], true strain φ, v.Mises equivalent strain, thinning [%], thickness [mm], safety strain, max. failure Graphs 3D surface display using original object grid for direct result mapping to object, colour encoded presentation of strain and thickness as texture on the 3D object, 2D data profiles along user defined curves, forming limit diagram (FLD) with various FLC’s and auxiliary lines, interactive tool for the creation of FLC’s from strain data sets, free editable FLD reports Strain accuracy (rms) for grid size 2.0 mm Δε = 0.2% Graphic export printer, clipboard, *.bmp, *.tif, *.png, *.jpg, *.vrml, *.ps, *.eps Data export ASCII, AutoForm, Pam-Stamp, *.stl, AutoCAD, LS-Dyna Accuracy (rms) mm 1.0 2.0 2.5 5.0 mm³ 80x60x30 160x120x60 200x150x75 400x300x150
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