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자료유형
학술저널
저자정보
Park, Jang-Min (Department of Mechanical Engineering, Pohang University of Science and Technology) Park, Seong-Jin (Department of Mechanical Engineering, Pohang University of Science and Technology)
저널정보
한국유변학회 Korea-Australia rheology journal Korea-Australia rheology journal 제23권 제4호
발행연도
2011.1
수록면
219 - 226 (8page)

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This paper introduces recent development and progress in rheology and processing of suspension materials. In particular, three topics with different suspensions will be discussed, which are relevant in polymer- and powder-based manufacturing industries for various applications. The paper begins with a fundamental study of rheological modeling for short fiber suspension in a viscoelastic liquid. Irreversible thermodynamics based approach is presented to describe the polymer viscoelastic deformation with the fiber anisotropy effect taken into account. Several distinguishing features of the model are presented. Then we turn our attention to more industry-oriented subject of pigment disk orientation in injection molding of aesthetic plastic parts. The major difference between fiber and disk orientation kinematics is briefly discussed using Jeffery model. Experimental and numerical results for the disk orientation and the surface color of the molded part are presented. Finally, we introduce our recent efforts regarding the rheology of magnetic particle suspension, which is an essential part for a development of precision magnetic powder injection molding process. Some rheometer data for stainless steel powder suspensions are presented.

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