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Prediction of Curl Distortion using Classical Lamination Theory in Stereolithography  

Kim, Gi-Dae (대구가톨릭대학교 기계자동차공학부)
Lee, Jae-Kon (대구가톨릭대학교 기계자동차공학부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.22, no.11, 2005 , pp. 210-217 More about this Journal
Abstract
A curl distortion induced by shrinkage during stereolithography polymerization process is analyzed with the classical lamination theory. Test parts of different layer thickness and part thickness are manufactured and their deformations are measured with CMM. Curl distortion is generated by the differential shrinkage of the layers, where the total shrinkage includes the shrinkages due to solidification and the change of temperature. It is shown that the curl distortion increases exponentially with decreasing the total thickness of the part, whose smaller layer thickness induces larger curl distortion. It is verified that only a part of the total shrinkage plays a role in generating the curl distortion.
Keywords
Curl distortion; Stereolithography; Classical Lamination Theory; Layer thickness; Solidification shrinkage;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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