Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Fabrication of Microscale Wrinkles on a Curved Surface Using Weak-Polymerization and Thermal Curing Process

약한 광중합과 열경화를 이용한 곡면 미세 표면주름 제작

  • Yang, Jung Ho (Graduate School, School of Mechanical Engineering, Pusan National University) ;
  • Zhao, Zhi Jun (Graduate School, School of Mechanical Engineering, Pusan National University) ;
  • Park, Sang Hu (School of Mechanical Engineering, ERC/NSDM, Pusan National University)
  • 양정호 (부산대학교 기계공학부) ;
  • 조지준 (부산대학교 기계공학부) ;
  • 박상후 (부산대학교 기계공학부 / 정밀정형 및 금형가공연구센터)
  • Received : 2016.01.17
  • Accepted : 2016.06.27
  • Published : 2016.10.01
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Abstract

In this study, we proposed an effective and simple way to directly generate wrinkle patterns on a curved surface. A curved surface was prepared using a 3D printer and an UV (Ultraviolet)-lighting system was utilized to weakly polymerize the UV-curable thin resin layer coated on the surface, resulting in a gradient of material properties in the layer thickness. Subsequently, a thermal curing process was conducted to generate microscale wrinkles by compressive forces that were generated during complete curing. Wrinkle shapes from 5, 15, 25 sec of UV-light exposure were compared. With increasing UV-exposure, the line-width of wrinkles became thicker due to much higher strength of skin zone. The results indicated that the proposed fabrication process could be utilized for surface modification in diverse research fields.

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References

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