Browsing by Subject "3D CAD systems"

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    Strategy for Composite Development in Rapid Prototyping
    (1993) Charan, B.; Bagchi, A.; Ogale, A.A.; Renault, T.
    The polymeric parts built with a stereolithography apparatus (SIA) have good dimensional accuracy, but they cannot be used as functional prototypes because of their low mechanical properties. This paper describes the concept of fabricating fiber composites by 3-D photolithography. In this process, the strength and stiffness of parts are improved over stereolithography by adding fiber reinforcement to the resin. An automated desktop photolithography unit (ADPU) was designed and built in-house, to add continuous E-glass or quartzfibers in situ to the photoresin. Thefirst composite parts made by 3-Dphotolithography are presentedin this paper, thefeasibility ofcurvilinearaddition offibers is demonstrated, andstrategies for selective reinforcement are discussed.
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    Virtual Reality and Rapid Prototyping: Conflicting or Complimentary?
    (1993) Gibson, I.; Cobb, S.; Eastgate, R.
    It is likely that the uses for virtual reality (VR) will coincide with applications that rapid prototyping systems have already been used for. VR, with the ability to model real life environments, presents an ideal base for the design and development of new manufactured products. As a method of producing physical models directly from 3D CAD systems, rapid prototyping technology has also been used to visualise new product designs. This paper attempts to determine whether the two technologies are a means to the same end or whether they combine to form a more efficient route to product development.