• Elastomers and Composites
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• v.25 no.2
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• pp.103-111
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• 1990

The blends of ethylene-propylene-diene terpolymer (EPDM) and high density polyethylene (HDPE) have been studied. Blends were prepared in a laboratory internal mixer, where EPDM was cured under shear with dicumyl peroxide (DCP) in the absence of HDPE and later blended with HDPE (cure-blend). The effect of DCP concentration, shear intensity of the mixing, and rubber/plastic composition were studied on the rheological, thermal and physical properties of the cure-blend. The results obtained were compared with those from blend-cure of Lee and Kim's work and discussed.

• Journal of architectural history
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• v.1 no.1 s.1
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• pp.191-204
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• 1992

This study is done in order to settle down as a Architecture Movement mainly had conducted by Theo van Doesburg. The process of this research is mainly focus on the Theo van Doesburg had used it as a house and studio, which had built in November 1930 since Agust 1925. Even though the works and theories of Theo van Doesburg had widely inffuenced on Modern Architects, these were the only experimental paper architecture by conceptural proposal of plastic architecture. Namely, The value of his works and theories did not overcome experimental archtecture. but, Theo van Doesburg left one work, at Meudon near Paris. This study intends to clear the special features of changing process and spatial characteristics on planing throughout from the planning to accomplisment of it.

• Proceedings of the Korean Geotechical Society Conference
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• 2008.10a
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• pp.1199-1203
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• 2008

It has been recognized that unsaturated soil behavior plays an importantrole in geomechanics. In the last decade several constitutive models have been proposed and used in the analysis. Many of them, however, are constructed in the frame work of rate independent model such as elasto-plastic one. Although rate dependency is an important characteristics of soil for both saturated and unsaturated soils, very few models have been developed taking account of rate dependency. In the present paper, we have developed an elasto-viscoplastic model considering an effect of suction based on the overstress-type viscoplasticity with soil structure degradation. In the model, we have adopted an averaged pore pressure composed of pore water pressure and air pressure to determine the effective stress.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08a
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• pp.698-701
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• 2007

A top emission organic light emitting diode comprising of a triple anode on polycarbonate $film/TNATA/NPB/Alq_3:C545T/cathodes$ has been fabricated. The triple layer structure of Cr/Al/Cr allowed for fabrication of a crack-free anode and provided better higher work function than ITO anode.The anode showed compatibility with flexible plastic substrate and no crack was formed during bending test while ITO anode showed crack.

• Steel and Composite Structures
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• v.18 no.5
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• pp.1161-1176
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• 2015

The connection between a column and a beam is of particular importance to ensure the safety of civil engineering structures, such as high-rise buildings and bridges. While the connector must bear sufficient force for load transmission, increase of its ductility, toughness and damping may greatly enhance the overall safety of the structures. In this work, a composite beam-column connector is proposed and analyzed with the finite element method, including effects of elasticity, linear viscoelasticity, plasticity, as well as geometric nonlinearity. The composite connector consists of three parts: (1) soft steel; (2) polymer; and (3) conventional steel to be connected to beam and column. It is found that even in the linear range, the energy dissipation capacity of the composite connector is largely enhanced by the polymer material. Since the soft steel exhibits low yield stress and high ductility, hence under large deformation the soft steel has the plastic deformation to give rise to unique energy dissipation. With suitable geometric design, the connector may be tuned to exhibit different strengths and energy dissipation capabilities for real-world applications.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.5 no.4
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• pp.41-45
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• 2006

In recent years, the demands of the aspheric glass lenses increase since it is difficult to obtain the desirable performance in the plastic lens. Glass lens is manufactured by the forming with high precision mold core. This paper presents the analysis of optimal grinding condition of tungsten carbide(WC, Co 0.5%) using design of experiments(DOE). The process parameters are turbin spindle, work spindle, feedrate and depth of cut. The experiments results are evaluated by MINITAB software.

• Journal of the Korea Safety Management & Science
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• v.14 no.1
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• pp.117-122
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• 2012

This paper deals with the productivity increment through construction of lean production system for automobile factory in China. This lean production system has been progressed according to 5 steps. Step 1 is the work preparation. Step 2 is the process design. Step 3 is the establishment of method to count production quantity. Step 4 is the establishment of measuring method for input and output. Finally, step 5 is the construction of flexible production system able to adapt for environment change. This lean production system is expected to obtain the productivity increment by 50% for plastic plant and reduction by 50% in inventory quantity.

• Korean Journal of Cleft Lip And Palate
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• v.11 no.2
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• pp.59-63
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• 2008

Craniofacial Centre at Children's Hospital Boston is a worldwide leader in the care of children and adolescents with craniofacial anomalies especially with cleft lip and/or cleft palate, which provides a team approach to the evaluation, diagnosis and treatment of children and adults with congenital (present at birth) or acquired facial deformities. This is staffed by an experienced team of clinicians, such as in oral and maxillofacial surgery, plastic surgery, neurosurgery, dentistry, audiology, speech and language pathology, genetics, psychiatry, otolaryngology, and social work, all with specialized training in the care of children with craniofacial anomalies. Here, there is a short introduction of history, attending surgeons, works, and sequential treatment for cleft lip/palate patients about this institution.

• Proceeding of KASS Symposium
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• 2006.05a
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• pp.73-80
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• 2006

In this paper, we work with steel circular tubes and propose analysis model which can consider local buckling that it has an effect on failure of steel structures and induce the relation between loading and deformation. First of all, in respect to axial symmetry local buckling, which is simplest case, elasto-plastic behavior acting only axial loads is object. Therefore, it suggests analysis model for axial symmetry local buckling. And that is explainable the process from increasing internal force to decreasing passing maximum internal force. Besides, we induce the relation between the axial force and axial deformation.

• Steel and Composite Structures
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• v.4 no.2
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• pp.77-94
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• 2004

Steel beam-to-column joints are often subjected to a combination of bending and axial forces. The level of axial forces in the joint may be significant, typical of pitched-roof portal frames, sway frames or frames with incomplete floors. Current specifications for steel joints do not take into account the presence of axial forces (tension and/or compression) in the joints. A single empirical limitation of 10% of the beam's plastic axial capacity is the only enforced provision in Annex J of Eurocode 3. The objective of the present paper is to describe some experimental and numerical work carried out at the University of Coimbra to try to extend the philosophy of the component method to deal with the combined action bending moment and axial force.