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Heterogeneous objects are objects composed of different constituent materials. In these objects, multiple desirable properties from different constituent materials can be synthesized into one part. In order to obtain mass applications of such heterogeneous objects, efficient and effective design methodologies for heterogeneous objects are crucial. In this(More)
Two recent advances—the use of functionally gradient materials in parts and layered manufacturing technology— have brought to the forefront the need for design and fabrication methodologies for heterogeneous objects. However, current solid modeling systems, a core component of computer-aided design and fabrication tools, are typically purely geometry based,(More)
—An increasing trend toward product development in a collaborative environment has resulted in the use of various software tools to enhance the product design. This requires a meaningful representation and exchange of product data semantics across different application domains. This paper proposes an ontology-based framework to enable such semantic(More)
Currently, solid modeling techniques are capable of capturing only the geometric and topological information of an object. However, there is a growing need for including additional information (such as material) in the solid model. Our focus application is Layered Manufacturing (LM), a process which is capable of fabricating a part made of several(More)