June 24, 2017
June 24, 2017
June 28, 2017
Engineering Design Graphics
Geometric Dimensioning and Tolerancing (GD&T) is a design tool and symbolic language that allows design engineers to communicate design intent and requirements, with particular attention to function and relationship of the part features, to those manufacturing the parts. GD&T can help save money by reducing waste parts, increasing uniformity, completeness and interchangeability of parts in manufacturing. GD&T is a topic that many employers consistently request that undergraduate students know and understand, both at graduation and during undergraduate summer internships and coops, as early as the summer after their first year. GD&T can be a particularly tricky topic to teach, due to complexity, breadth of information, required spatial reasoning, and common lack of prior exposure to the topic. To assist students in developing a spatial understanding GD&T at a basic level in a first year undergraduate engineering CAD, sketching, and visualization course, a set of hands-on demonstration tools have been developed. This paper presents those tools and how to make your own set, along with a few additional activities to help students engage with and retain the concepts. The tools can be made with inexpensive materials, requiring only clear plastic sheets (PVC, acrylic, etc.), clear tape, permanent marker, and colored paper. These materials have been used in a course with 9 sections of 50 students each, and indicate appropriate feasibility for classes of a similar scale.
Paige, M. A., & Fu, K. (2017, June), Spatial Demonstration Tools for Teaching Geometric Dimensioning and Tolerancing (GD&T) to First-Year Undergraduate Engineering Students Paper presented at 2017 ASEE Annual Conference & Exposition, Columbus, Ohio. https://peer.asee.org/28835
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