리브를 가진 일체형 SMC 압축성형재의 Sink Mark 형성에 관한 실험적 연구An Experimental Study on Sink Mark Formation in Compression Molded SMC Parts with Rib

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dc.contributor.author정진호ko
dc.contributor.author임용택ko
dc.date.accessioned2009-12-17-
dc.date.available2009-12-17-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued1995-06-
dc.identifier.citation대한기계학회논문집 A, v.19, no.6, pp.1490 - 1500-
dc.identifier.issn1226-4873-
dc.identifier.urihttp://hdl.handle.net/10203/15100-
dc.description.abstractCompression molding of SMC (Sheet Molding Compound) in a thin plaque with substructures like a rib is involved with the formation of surface defect along the centerline over the rib area called by sink mark depending on process parameters. The surface quality of the external panels in automotive manufacturing is so critical that this kind of defect should be eliminated during manufacturing stages. The effect of process parameters on sink mark formation and the distribution of chopped fiberglasses in the compression molded thin plaque with a rib was experimentally investigated in the present study. In order to estimate the effect of the molding parameters such as molding temperature, mold closing speed, depth of the rib, corner radius of the rib, and final molded part thickness of flat portion on the depth of sink mark and the distribution of fiberglasses in the molded SMC part with the rib under the present experimental conditions, the molding parameters used in experiments were non-dimensionalized equation for predicting the depth of sink mark was determined through dimensional analysis based on the experimental data. The orientation and distribution of fiberglasses and fillers which directly affect the formation and depth of sink mark were investigated by taking the photographs of the cross-sectional area of the molded specimen using scanning electron microscope. The experimental results proposed from this investigation are useful in understanding the formation of sink mark and predicting the depth of sink mark in compression molding of SMC with substructures.-
dc.description.sponsorship본 연구는 상공자원부와 한국과학재단의 연구지원사업과 삼성중공업(주),현대자동차(주),제일모직(주),LG 화학(주),화신산업의 연구지원에 의해 수행된 것으로 이에 관계자 제위께 감사드린다. 또한, 주사전자현미경 사진을 찍는데 큰 도움을 주신 한국과학기술원 재료공학과의 남승우 교수님과 SMC시편 제작을 위해 인장시험기 사용을 허락해 주신 기계공학과의 허훈 교수님께도 깊은 감사를 드린다.en
dc.languageKorean-
dc.language.isokoen
dc.publisher대한기계학회-
dc.title리브를 가진 일체형 SMC 압축성형재의 Sink Mark 형성에 관한 실험적 연구-
dc.title.alternativeAn Experimental Study on Sink Mark Formation in Compression Molded SMC Parts with Rib-
dc.typeArticle-
dc.subject.alternativeCompression Molded SMCen
dc.subject.alternativeSubstructureen
dc.subject.alternativeSink Marken
dc.subject.alternativeSEMen
dc.subject.alternativeIn Mold Coatingen
dc.type.rimsART-
dc.citation.volume19-
dc.citation.issue6-
dc.citation.beginningpage1490-
dc.citation.endingpage1500-
dc.citation.publicationname대한기계학회논문집 A-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.contributor.localauthor임용택-
dc.contributor.nonIdAuthor정진호-
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ME-Journal Papers(저널논문)
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