1998 / DB reference year
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Author Kim, J Y. Lee, K. Park, J C. Jung, Y H. Institution Seoul Natl Univ, Seoul, South Korea
Source International Journal of Advanced Manufacturing Technology. v 14 n 12 1998. p 882-888.
Abstract Prototypes of a design are always needed for the purposes of visualization and evaluation for manufacturability, functionality, and aesthetic appearance. Since the prototyping process requires a significant amount of cost and time, various rapid prototyping processes have recently been introduced. However, it is usually necessary for a part built up by a rapid prototyping system to be finished by a post-processing process, in which the stair steps on the surfaces, the support structures (if they exist), and the unprocessed material are eliminated. This post-processing is usually done manually and is a time-consuming task. Eliminating the trapped volumes (the volume of the unprocessed material entrapped by the solidified portion) is sometimes impossible in some processes. This study provides a designer with a tool to detect the existence of trapped volumes and to calculate the quantity in a given build-up direction, so that a suitable build-up direction is chosen or the part is built in pieces to a void the problems caused by the trapped volumes. Since the proposed algorithm can efficiently calculate the amount of the trapped volumes in any build-up direction, it has the potential for such applications as optimizing the build-up direction to minimize the trapped volumes. (Auth abstract) [References: 11] XX