• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 추계 학술논문 발표대회
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• pp.143-144
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• 2018

This study the workability of synthetic resin form was examined through field application. results there was no warping or bulging of the mold during concrete placement in the field application. Also, the concrete surface finish of synthetic resin form was better than that of euro-form.

• 대한기계학회논문집
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• 제16권7호
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• pp.1341-1350
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• 1992

본 연구에서는 시험 재료의 특성을 가장 잘 나타낼 수 있으며 시험 자료밖의 범위에서도 물리적 타당성을 갖는 변형 에너지 함수를 찾기 위한 방법의 일환으로 기 존의 여러 방법들을 이용하여 동일한 시험 자료에 적용함으로써, Rivlin 형태와 Ogden 형태에 대한 재 조사를 실시하였다. 그리고 비선형 대변형 재료의 실제 사용 예로서 앞에서 언급한 타이어용 고무를 들 수 있는데 이들에 대한 변형 에너지 함수를 결정하 기 위한 시험자료는 실제적 문제때문에 단순 인장과 같은 비교적 간단한 경우에 대하 여 한정되어 있으므로, 이러한 자료로부터 여러 종류의 하중 상태를 예측할 수 있는 변형 에너지 함수를 찾고자 하였다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1995년도 추계학술대회 논문집
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• pp.1186-1190
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• 1995

This paper is focused on the formulation of explicit closed-form functions describing the performance measures of the general flexible manufacturing system (FMS)according to the strategy of material handling system(MHS). the performance measures such as the production rate, the production lead-time and the utilization rate of the general FMS are expressed, respectively, as the explicit closed-form functions of the part processing time, the service rate of the material handling system (MHS) and the number of machine tools in the FMS. For this, the gensral FMS is presented as a generalized stochastic Petri net model, then, the moment generating function (MGF) based approach is applied to obtain the steady-state probabity formulation. Based on the steady-state formulation, the explicit closed-form functions for performance measures of the probability FMS can be obtained. Finally, the analytical results are compared with the Petri net simulation results to verify the validity of the suggested method. The paper is of significance in the sense that it provides a comprehensive formula for performance measures of the FMS even to the industry engineers and academic reademic resuarchers who have no background on Markov chain analysis method or Petrinet modeling

• The Korean Journal of Ceramics
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• 제4권4호
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• pp.336-339
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• 1998

Bioactive titanium metal can be prepared by simple 5M-NaOH treatment and subsuquent heat treatment at $600^{\circ}C$ to form an amorphous sodium titanate on its surface. In the present study, mechanism of apatite formation on the titanium metal was investigated by examining its surface compositional and structural changes in a simulated body fluid. The apatite formation on the metal was found to proceed in the sequence of 1)$Na^+$ ion release from the sodium titanate to form hydrated titania abundant in Ti-OH groups, 2) early and selective binding of calcium ions with the Ti-OH groups to form a calcium titanate, and 3) late binding of phosphate ions to make apatite nucleation and growth. This indicates that Ti-OH groups do not directly induce the apatite nucleation, but via formation of a calcium titanate.

• 한국건축시공학회지
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• 제10권5호
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• pp.137-143
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• 2010

본 연구는 거푸집에 부착하는 코팅재료에 따른 콘크리트 표면광택도 비교 분석으로서 시멘트모르터로 제작한 시험체의 광택도를 분석하고 유동화제를 혼합한 콘크리트와 혼합하지 않은 콘크리트의 노출콘크리트 표면 광택의 특성을 분석한 것이다. 시멘트모르터를 이용한 코팅재료별 광택도 분석에서 광택도가 가장 높게 나타난 코팅재료는 7번 재료로 액체포장재의 일부이며 2번째는 3번 재료로 투명필름을 이용한 재료이다. 코팅필름의 소재에 따라 광택도가 다르게 나타난 것으로 미루어 소재의 표면입자 상태와 화학적 구성요소의 따라 다른 것으로 판단된다. 콘크리트의 표면상태를 매끄럽게 하기 위해서는 불투수성이며 매우 밀실한 표면을 가진 코팅재료를 사용하는 것이 효과적이다.

• 한국건축시공학회지
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• 제4권4호
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• pp.103-108
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• 2004

In order for concrete as a basic material constituting reinforced concrete structure to meet the required performance, it is necessary to satisfy various requirements in concrete construction. Among them, form work has significant effects not only on the process of molding fresh concrete but also on the quality and performance of hardened concrete. Recently, the decrease and aging of form workers is becoming a great problem in the construction industry and, as a result, it is required to rationalize form works and reduce labor costs for employing form workers. Because form construction methods decide the type of form according to required performance, it is necessary to develop various form construction methods and examine their performance. Thus the present study purposed to expand the scope of application of form construction methods and, for this purpose, investigated the basic characteristics of rib- lath form and presented a system form construction method.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2002년도 봄 학술발표회 논문집
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• pp.985-990
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• 2002

Contemporary architecture calls for a wide range of surface textures and treatments. A surface compatible with the architect's design may vary from a glass-smooth finish to one requiring special sculptured ornamentation. These surfaces require many different types of form sheathing and lining. The purpose of study development new design form and made elaborateness shape. Easy to used in field that architecture finish material not used expect effective reduce of working hours, personnel expenses, architecture finish material, cost. After this, building wall apply a variety shape in concrete surface.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 1995년도 추계학술대회 논문집
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• pp.332-335
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• 1995

Electrification pipe modeled on the oil path of the high power transformer is designed and manufactured. Distributions of oil flow velocity are simulated as spacer form in the electrification pipe. Streaming currents are investigated as each electrification pipe. The surface oil velocity of spacer is small the streaming current.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 봄 학술발표회 논문집
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• pp.573-578
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• 2003

Contemporary architecture calls for a wide range of surface textures and treatments. A surface compatible with the architect's design may vary from a glass-smooth finish to one requiring special sculptured ornamentation. These surfaces require many different types of form sheathing and lining. The purpose of study development new design form and made elaborateness shape. Easy to used in field that architecture finish material not used expect effective reduce of working hours, personnel expenses, architecture finish material, cost. After this, building wall apply a variety shape in concrete surface

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 춘계 학술논문 발표대회
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• pp.151-152
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• 2019

This study length variation test, shock test were conducted to evaluate the performance of synthetic resin form. Results of both thermal length variation test and shock test satisfied the KS standards. for length variation test, the result of the horizontal and vertical valuse were -0.1% in average.