Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Prediction of Curl Distortion using Classical Lamination Theory in Stereolithography

SL 광조형 공정에서 고전적층이론을 적용한 곡률 변형 예측

  • 김기대 (대구가톨릭대학교 기계자동차공학부) ;
  • 이재곤 (대구가톨릭대학교 기계자동차공학부)
  • Published : 2005.11.01
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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

References

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