With the analyses according to VDG - P 201 and BDG - P 202, you can tolerance the following parameters in arbitrarily oriented digital component sections by means of a porosity key:

• Maximum surface porosity
• Maximum pore diamenter (equal area of circle [ØF])
• Maximum length of pores ("Ferret"; compared diameter [ØL])
• Minimum normalized distance between adjacent pores
• Maximum number of pores

The evaluation is performed both in the entire section and in reference areas (square, rectangle, triangle, circle) set by the user.

The BDG Reference Sheet P 203 not only extends VDG - P 201 and BDG - P 202 to 3D but also puts an additional focus on the specific assessment of functionally relevant part areas by using free-form regions.

Volume Graphics software integrates important specifications according to the BDG Reference Sheet P 203 for the definition of the volume for pore assessment as well as for the definition of three-dimensional characteristics of internal volume deficits. Intuitive input functions make it easy to define porosity specifications based on the porosity key according to BDG - P 203.

Volume Graphics software also allows you to perform the porosity analysis according to BDG - P 203 on raw parts with additionally inserted reference surfaces, such as a 3D CAD machined part. This allows you to evaluate the porosity on the to-be-machined surfaces in advance.

Furthermore, the porosity key according to BDG - P 203 can also be used to exclude discontinuities from the evaluation due to their porosity parameters, such as gas pores and micro-cavities with a maximum diameter of 0.6 mm.