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An information model of materials and their properties has been developed to support an international standard on product model data. Under the auspices of ISO, the Standard for the Exchange of Product Model Data (STEP) is being developed to support data exchange between software that performs all the engineering functions associated with manufactured products. Materials information is very important for STEP and the modeling effort has two goals: to provide a general framework for the description of a material, its properties, and the environment in which those properties are meaningful; and to support the use of materials information in product-related applications. The modeling effort has built upon work of several groups, especially ASTM Committee E49. The model has been developed using a data modeling language and its associated graphical representation.
data models, information model, ISO, material database, material testing, STEP
Program Manager, National Institute of Standards and Technology, Gaithersburg, MD