GRITSCAN
Coatings & Industry > Mechanical properties > Flexibility and toughness > Stone Hammer Blow Tester
Analysis System GRITSCAN
The surface analysis system GRITSCAN is a combination of hardware and software for the automatic evaluation and documentation of impact images; connectable via USB cable to standard laptops / PCs (must be provided by the user).
Evaluation of results by camera system vs. manual result evaluation
• Any visual or manual evaluation, y ranking or classifying of the results is suffering
of the following:
– Visual evaluation & judgment trough the users‘ eyes include the “human error“– Individual impression by the user is time-limited in his mind & remembrance.– No digital documentation.
• An automatic evaluation by a digital vision system can provide the following advantages:
– Exclusion of the “human error“.– “Impression” is exchanged against measurement and the validity & access to the values is not time-limited.
– Objective, precise and repeatable results.– Digital communication
• EN ISO 21227-2 is making a good approach to describe a standard vision system to achieve reliable results.
• Design parameters of EN ISO 21227-2 as the following:
– Pixel resolution: min 6 pixel / mm– Illumination: Diffuse bright field (recommended)
– Area of Interest (AOI): 70 mm x 70 mm (recommended)– Threshold setting: by means of reference samples according ISO 20567-1
