Downloaded from https://www.everyspec.com APPENDIX C MIL-STD-31000A Figure 6. Check In. Model healing is appropriate when preservation of parametric features is not required or appropriate, usually following translation from one 3D format to another. Examples of data checking software in use are shown in Exhibit C. C.6.3. Model healing processes and procedures. In general, 3D models should be free from defects before they are released for use by other people such as analysts, prototype fabricators, tool makers, or machinists. The best way to correct defects is in the CAD software that was used to make them.
When models are translated from one CAD 3D format to another, feature information may be lost. In these cases, data healing software is used to correct minor geometric and topological defects resulting from errors in translation. Healing software may be employed interactively or, when many models must be corrected, in a semi-automated batch process. In either case the same method is employed: 1. The healing software reads the 3D model. 2. Errors are identified and reported. 3. Automated healing procedures are applied and the model is checked again. 4. Operators interactively correct any remaining errors. An example of healing software is shown in Exhibit D.
Because error detection and identification must precede healing, it is often more efficient to perform data-quality checking and healing as part of a single process. 79