Assessment of Parametric Assembly Models Based on CAD Quality Dimensions

Abstract

An approach to convey CAD quality - oriented strategies to beginning users to create bottom - up assemblies is described . The work builds on previous efforts in the area of single part history - based, feature - based parametric modeling evaluation by defining, testing, and validating a set of qu ality dimensions that can be applied to MCAD assembly assessment. The process of redefining and adapting dimension descriptors and achievement levels of parts rubrics to make them applicable to assemblies is addressed , then the results of two experimental studies designed to analyze the inter - rater reliability of this approach to assembly evaluation are reported. Results suggest the mechanism is reliable to provide an objective assessment of assembly models. Limitations for the formative self - evaluation of CAD assembly skills are also identified.