Establishment of process model for part strength in stereolithography
Establishment of process model for part strength in stereolithography
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DOI：
10.1016/j.jmatprotec.2007.12.144
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发表时间：
2008-11-21
影响因子：
6.3
通讯作者：
Ramanathan, K. N.
中科院分区：
文献类型：
--
作者：
Chockalingam, K.;Jawahar, N.;Ramanathan, K. N.
光固化快速成形是一种应用广泛的快速成形技术。三个参数，即层厚度，后固化时间和取向的SL产品的强度的贡献是最显着的。本文对SL 5000机床上采用CIBATOOL 5530快速模具制造零件时，影响零件强度的工艺参数进行了研究，并优化了工艺参数水平。除此之外，还开发了部件强度（拉伸、冲击、弯曲）与上述工艺参数（层厚度、后固化时间和取向）之间的工艺模型（经验关系/回归模型）。通过经验关系获得的工艺模型可以预测对于给定的一组工艺参数可以实现多大的强度，从而在实际制造SL部件之前提供部件强度的先验知识。该过程模型能够显示强度对工艺参数的依赖性，这是非常有用的信息，机器设计人员以及RP机器用户。(C)2008 Elsevier B. V.保留所有权利。
Stereolithography (SL) is one of the popular RP processes used for rapid tooling applications. The contribution of three parameters namely layer thickness, post-curing time and orientation are the most significant to the strength of SL product. in this paper, an attempt has been made to identify the process parameters that influence on the strength of parts made with CIBA TOOL 5530 in SL 5000 machine, one of the processes used for rapid tooling and optimize the parameter levels. Addition to the above, a process model (empirical relationship/regression model) between part strength (tensile, impact, flexural) and the above-mentioned process parameters (layer thickness, post-curing time and orientation) has been developed. The process model obtained by the empirical relation can predict how much strength can be achieved fora given set of the process parameters, thus providing prior knowledge of part strength before actually making a SL part. The process model is able to show the dependency of strength on process parameters, which is very useful information for machine designers as well as RP machine users. (C) 2008 Elsevier B.V. All rights reserved.