• VDA Checker

    Quality Checker Product data quality and validation

VDA and SASIG quality check

The certified 3D_Evolution© Quality Checker verifies all 3D geometries independent of the CAD format. It is the only conversion tool that is certified in accordance with SASIG/PDQ and VDA 4955/2 specifications.

Failures on faces, surfaces, curves, and topology are accurately displayed on the model. The listing of error types in the checker’s tree structure allows for systematic selection of the geometries and error clearings. 3D_Evolution also has specific automatic healing and interactive clean-up functions for VDA-check-related errors, such as twisted faces, mini-faces and many others.

Depending upon the application and/ or customer requirements, testing profiles containing the relevant testing criteria can be saved. The result conforms with SASIG/PDQ and VDA 4955/2 specifications and can be saved in an HTML format. Similar to all other modules, the quality checker can be applied for individual parts or assemblies and runs also in batch mode.



LOTAR GVP validation

This tool has been developed in close collaboration with the aerospace industry to validate CAD data for Long-Term Archival and Retrieval (LOTAR).

Based on the Geometric Validation Properties (GVP) values written in the STEP AP 242 files by the CAD system generating the 3D models the data will be read and checked by the independent 3D_Evolution kernel validating these values. Property values that differ from the calculated ones in a given tolerance will be indicated. Examples for these GVP are:

• Geometric, e.g., volume, surface, centroid, and COPS

• Assembly, e.g., number of children and solid centroids

• PMI, e.g., polyline curve length comparison

• Tessellation, e.g., centroid and surface area

• Composites, e.g., number of sequences and cut pieces

In addition, a log file, meeting all LOTAR requirements will be created. As with all check functions this process can also be performed in batch mode.



JT data check

The JT format offers many different possibilities to describe structure and geometry as well as tessellated information. To check if a JT file created by an application is meets specific standards, the JT checker is an easy solution. At the push of a button the tool checks all relevant criteria defined by a free definable user profile such as:

• Geometry existence of XT or NURBS B-REP

• Criteria for LOD

• PLMXML assembly path

• Attributes like units, metadata, and monikers

After a check of the moniker identifier, it is also possible to automatically correct the monikers of a given model. User-defined profiles make it easy to verify if data is approved, e.g., for a JT data exchange with Daimler. In addition, a check based on Geometric Validation Properties, e.g., for STEP AP 242, is also available for the JT format.



Feature and link check

To investigate the model quality of formats such as CATIA V5, NX, SOLIDWORKS and Creo, this tool provides functions to check minimal and maximal values for feature parameters or link consistencies, e.g., if links between a 3D model and the drawing are functional. Additionally, the assembly structure can be checked if there are broken links to non-existing models.


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