Downloaded from https://www.everyspec.com APPENDIX C MIL-STD-31000A C.7.5.3. Tiny face (G-FA-TI). Definition: Area of a face is below the allowable minimum. Effects of condition on CAD data quality: Design and drafting: Tiny faces may be treated as invalid. Surface offsets, fillets, rounds, cross sections, and other features in proximity to tiny faces may fail. Data exchange: Faces may not trim properly. Models may fail to sew into solids after translation. Finite element analysis: Mesh generation may fail. Mesh quality may suffer from excessive numbers of elements or distorted elements. Numerically controlled manufacturing: Errors in tool paths may occur.
Solid models may not sew properly upon import. Recommended correction: Enlarge or adapt neighboring faces to eliminate the tiny face. C.7.5.4. Narrow face (G-FA-NA). Definition: Width of a face in one direction is consistently below the allowable minimum. Effects of condition on CAD data quality: Design and drafting: Narrow faces may be treated as invalid. Surface offsets, fillets, rounds, cross sections, and other features in proximity to narrow faces may fail. Data exchange: Faces may not trim properly. Models may fail to sew into solids after translation. Finite element analysis: Mesh generation may fail. Mesh quality may suffer from excessive numbers of elements or distorted elements.
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