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A strategy for testing product conformance to geometric dimensioning & tolerancing standards



Simon P. Frechette, Bryan Fischer


Geometric Dimensioning and tolerance (GD&T) information is created as part of the design process. Today, that process is performed using computer-aided design systems, which generate 3D digital product models. GD&T is created and stored as an integral part of those models. In many industries, the goal is to reuse GD&T to drive downstream activities including engineering, analysis, production, and inspection. To achieve this goal, the software applications associated with those activities must be able to exchange and interpret G&T information correctly and, to the extent possible, automatically. To facilitate that exchange and interpretation, ASME and ISO developed information standards for defining, representing, and presenting GD&T information. The complexity of those standards, however, frequently causes both exchange and interpretation errors. Those errors can result in significant delays and cost overruns. This paper presents a strategy for testing conformance to ISO and ASME GD&T standards. That strategy includes a testing architecture, testing requirements, test cases, and coverage analysis.
Conference Dates
April 18-19, 2012
Conference Location
Conference Title
CIRP-CAT Conference 2012


GD&T, conformance testing, toleranceing, compliance, standards, model-based engineering


Frechette, S. and Fischer, B. (2012), A strategy for testing product conformance to geometric dimensioning & tolerancing standards, CIRP-CAT Conference 2012, Huddersfield, -1, [online], (Accessed July 17, 2024)


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Created April 20, 2012, Updated February 19, 2017