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Shear Experiment and Simulation Analysis at Bonded Surface of Specimen Tapered Double Cantilever Beam with Expanded Aluminum

Hongpeng Sun、Seong Sik Cheon、Jae Ung Cho2014-12-31Composites Research

본 연구에서는 발포 알루미늄으로 구성된 접착 구조물에서의 접합면에 대한 파괴 특성을 조사하기 위하여 각도를 변수로 정하고 TDCB 시험편을 설계하였다. 이 시험편들은 길이는 200 mm이고 시험편에 대한 접착면의 경사 각도는 $6^{\circ}$ , $8^{\circ}$ , $10^{\circ}$ 와 $12^{\circ}$ 인 네 가지로 모델링을 하였다. 이 시험편들의 실험 및 해석을 분석한 결과, 경사면 각도가 $6^{\circ}$ , $8^{\circ}$ , $10^{\circ}$ 와 $12^{\circ}$ 인 경우에 시험편들의 최대 하중은 각각 약 120 N,…

Mechanical Behavior of CompositesElectronic Packaging and Soldering TechnologiesHigh-Velocity Impact and Material Behavior

Investigation of the Effects of Ionic Liquids Pretreatments and Enzymatic Hydrolysis of Kempas, Koompassia malaccensis

Poh Loh、Nur Hasyareeda Hassan、M. Yusop2014-12-31Oriental Journal Of Chemistry

Oriental Journal of Chemistry is a peer reviewed quarterly research journal of pure and applied chemistry. It publishes standard research papers in almost all thrust areas of current chemistry of academic and commercial importance. It provides a platform for rapid publication of quality research papers, reviews and ch…

Nanoparticles: synthesis and applicationsThermochemical Biomass Conversion ProcessesBiodiesel Production and Applications

Comparisons of the Particle Emission Characteristics Between GDI and MPI Vehicles

Jongtae Lee、Kijoon Kim、Jeong-Soo Kim 等 5 位作者2014-12-31Journal of ILASS-Korea

As the regulations for Particulate Matter (PM) and Particle Number (PN) emissions from Gasoline Direct Injection (GDI) Vehicle stringent recently, a lot of studies have been made on the emission characteristics of PM and PN. In this study, PM and PN emission characteristics were compared to GDI and Multi Port Injectio…

Catalytic Processes in Materials ScienceVehicle emissions and performanceEngineering Applied Research

A Study on the Toxicity Evaluation of Combustion Gas of Fire Resistive Coating of Structural Members Using FT-IR

Oh-Sang Kweon2014-12-31Korean Society of Hazard Mitigation

이 연구에서는 화재발생 시 요구내화성능을 만족시키기 위한 건축물 주요구조부에 적용하는 내화피복재의 연소가스 독성평가를 위하여 무기질계 내화피복재 및 유기질계 내화피복제를 대상으로 실험을 수행하였다. 연소가스 독성평가에는 NES 713, BS 6853을 적용하였으며, 주요실험 변수는 무기질 및 유기질 계열로 구분하여 뿜칠재, 방화석고보드, 1시간 내화도료, 2시간 내화도료였다. 독성평가 결과 유기질 내화피복재가 무기질 내화피복재에 비해 연소가스가 현저하게 많이 발생하였으며, 특히 2시간 내화도료의 경우 가장 많은 연소가스를 발생시키는 내화피복재로 피복물량의 저감을 위…

Fire dynamics and safety researchFlame retardant materials and properties

Manufacture of melting temperature controllable modified sulfur (MS) and its application to MS concrete

Jin‐Hee Kim、Jin Sub Choi、No Hyung Park2014-12-31Journal of the Korean Crystal Growth and Crystal Technology

본 연구에서는 용융 온도 제어형 개질 유황(MS)을 제조하였고, 이를 포함한 개질유황시멘트콘크리트(SMC)의 특성을 연구하였다. 저융점 개질유황의 합성에 있어서 황 함량과 피리딘 함량에 따른 효과를 살펴보았고, 반응은 라만분광기를 이용하여 확인하였다. SMC는 일반 포틀랜드시멘트 대비 Water (W)/Cement (C) = 45 wt%, Sand (S)/Aggregate (A) = 45 wt%로 하였고, 5, 10, 15, 20 %로 개질유황 혼입율을 다르게 하여 제조하였다. 그리고 SMC의 압축강도, 쪼갬인장강도, 투수계수 등의 물성을 측정하였으며 비폭렬성을 확…

Structural Behavior of Reinforced ConcreteStructural mechanics and materialsAdvanced Energy Technologies and Civil Engineering Innovations

Property Changes of Woven Blouse Fabrics by bonding fusible interlinings for a 3D Virtual Try-on System

Myoung-Ok Kim、Myung-Ja Park2014-12-31Fashion & Textile Research Journal

This study aims to analyze the changes in the mechanical properties of woven fabrics(cotton, linen, wool, silk, and polyester) by bonding fusible interlinings with varying deniers(10D, 20D, and 30D) for a 3D virtual try-on system(one that a user to try garments through screens using Avatar) developed over the last dec…

3D Shape Modeling and AnalysisTextile materials and evaluationsFashion and Cultural Textiles

Plasma-assisted Catalysis for the Abatement of Isopropyl Alcohol over Metal Oxides

Jin Oh Jo、Sang Baek Lee、Dong Lyong Jang 等 5 位作者2014-12-31Clean Technology

금속산화물이 담지된 허니컴 형상의 플라즈마-촉매 반응기를 이용하여 아이소프로필 알코올(isopropyl alcohol, IPA) 저감 및 부산물 생성 거동에 대해 조사하였다. 허니컴 형상의 다공질 세라믹 지지체(주성분: ${\alpha}-Al_2O_3$ )에 금속산화물로 산화철( $Fe_2O_3$ ) 또는 산화구리(CuO)를 담지시킨 후, 이 촉매가 동축 원통형 전극구조 내부에 위치하도록 플라즈마-촉매 반응기를 구성하였다. 플라즈마 반응에 의한 IPA 분해속도가 매우 빨랐기 때문에 IPA 분해효율 자체는 금속산화물 담지 여부 및 금속산화물 종류에 관계없이 유사한 것…

Catalytic Processes in Materials SciencePlasma Applications and DiagnosticsNanomaterials for catalytic reactions

Spray and Combustion Characteristics of n-dodecane in a Constant Volume Combustion Chamber for ECN Research

Jaeheun Kim、Hyunwook Park、Choongsik Bae2014-12-31Journal of ILASS-Korea

The spray and combustion characteristics of n-dodecane fuel were investigated in a CVCC (constant volume combustion chamber). The selection of ambient conditions for the spray followed ECN (engine combustion network) guidelines, which simulates the ambient condition of diesel engines at start of fuel injection. ECN is…

Advanced Combustion Engine TechnologiesCatalytic Processes in Materials ScienceCombustion and flame dynamics

Progressive Collapse Analysis of Reinforced Concrete Core Structure Subjected to Internal Blast Loading

Han‐Soo Kim、Jae-Gyun Ahn、Hyoseong Ahn2014-12-31Journal of the Korea Concrete Institute

논문에서는 철근콘크리트 코어 구조물의 내부폭발 효과를 폭발이나 충격해석에 특화되어 있는 하이드로코드인 Ansys Autodyn을 이용하여 조사하였다. 내부폭발의 경우 폭발하중의 반사효과로 인해 더욱 큰 파괴를 일으킬 수 있다. 그러므로, 본 논문에서는 UFC 3-340-02 를 사용하여 내부 폭발현상을 입증하였다. 추가적으로 Autodyn을 사용한 해석에 관하여 UFC에서 예제로 제시하는 폭발하중의 반사에 관한 실험 결과를 비교하여 Autodyn이 내부폭발 효과를 해석하는데 적합함을 증명하였다. 나아가, 초고층빌딩에서 가장 중요한 부분 중의 하나의 코어 구조의 붕괴…

High-Velocity Impact and Material BehaviorStructural Response to Dynamic LoadsFire effects on concrete materials

Fatigue Characteristics on Welded Joint of Gear Box-Shank in Vibro Ripper for Rock Crash

Kyoyul Oh、Jae Hoon Kim、Y.W. Kim 等 7 位作者2014-12-31Journal of the Korean Society of Safety

Abstract : Vibro ripper worked by high frequency vibration is developed to do rock fragmentation and work of ripper is the different concept with other existing breakers. The gear box-shank welded joint of vibro ripper is very important part to deliver vibromo tive force to tooth, so this part should endure high frequ…

Gear and Bearing Dynamics AnalysisMetal Alloys Wear and PropertiesMechanical Failure Analysis and Simulation

Switching behavior in Peramlloy/Niobium/Permalloy trilayer

Tae‐Jong Hwang、Dongho Kim2014-12-31Progress in Superconductivity and Cryogenics

We have investigated the effect of temperature and bias current on the stability of the inverse spin-switch effect in Permalloy(Py)/Nb/Permalloy pseudo spin-valves. The inverse spin-switch operates between two orientations of the ferromagnetic moments of Py layers; parallel (ON) and antiparallel-domain (OFF) state. Me…

Physics of Superconductivity and MagnetismMagnetic properties of thin filmsMagnetic and transport properties of perovskites and related materials

Influence of Temperature on Ductile-Fragile Behavior

Carlos Alves da Silva、Rodrigo Nascimento、M.S. Martins 等 4 位作者2014-12-31Materials science forum

The article to be presented will cover the whole process done in a fracture test for impact, taking into account the thermal treatment of the sample to be studied. The main objective of this article is to observe, verify, analyze and understand how the temperature difference of several samples influences the type and…

Advanced machining processes and optimizationMetal Forming Simulation TechniquesHigh-Velocity Impact and Material Behavior

Preparation and Properties of Sodium Alginate/PEO and Chitosan/PEO Blend Films

Yeong Jeong Kang、Eun Hyeon Kim、Joon Ho Kim2014-12-31Textile Science and Engineering

Alginates and chitosan are natural biopolymers with desirable biological properties. Sodium alginate/poly(ethylene oxide) (PEO) and chitosan/PEO blend films that are non-toxic, biodegradable, and biocompatible were prepared using the solvent casting method. The characteristics of the blend films with different blendin…

Nanocomposite Films for Food Packagingbiodegradable polymer synthesis and propertiesElectrospun Nanofibers in Biomedical Applications

Design and Fabrication of Stratified Microwave Absorbing Structure Consisted of Glass/Epoxy - Resistive Sheet - Foam

Won-Ho Choi、Jae‐Hwan Shin、Tae‐Hoon Song 等 5 位作者2014-12-31Composites Research

In this study, a novel microwave absorber which consists of a structural part, a resistive sheet, and a low dielectric layer is proposed. Unlike the conventional Salisbury screen, a newly proposed absorber is capable of a range of absorbing performance, from narrowband to broadband. In the case of the narrowband absor…

Electromagnetic wave absorption materialsAdvanced Antenna and Metasurface TechnologiesElectromagnetic Compatibility and Measurements

Behaviour of Fluids in Porous Materials

M.A. Martı́nez、F. Velasco、J. Abenójar2014-12-31Materials science forum

The pore structure and the presence of open and close porosity has always made difficult the study of the interaction between fluids and porous materials, being complicated the analysis of liquids wettability and permeability, capillarity or speed of wetting, among others. This work tries to deal with these problems i…

Surface Modification and SuperhydrophobicityTribology and Lubrication EngineeringAdhesion, Friction, and Surface Interactions

Synthesis and Characterization of Non-halogen Type Phosphorus-Based Flame Retardants

Young Gyun Han、Seong Kee Min、Chan Young Park2014-12-31Elastomers and Composites

난연제 가운데 가장 많이 사용되는 할로겐 함유 난연제는 사용상 환경적인 제한을 받고 있어서 비할로겐타입인 인계에 기초한 난연제가 각광을 받고 있다. 난연제는 수지에 가해지는 경우에 흔히 열분해와 기계적 특성저하를 일으킨다. 물성의 열화를 최소화하고 충분한 난연성을 얻기 위한 시도로 새로운 난연제에 대한 연구를 수행하였다. 본 연구에 있어서는 diaryl alkyl phosphate esters, aromatic phosphate esters 및 phosphonium nitron 난연제 등 세가지 형태의 비할로겐 인계에 기초한 난연제를 합성하여 GC, IR 및 TGA…

Flame retardant materials and propertiesSynthesis and properties of polymersSynthesis of Organic Compounds

Decomposition of Ethylene using a Hybrid Catalyst-packed Bed Plasma Reactor System

Sang Baek Lee、Jin‐Oh Jo、Dong Lyong Jang 等 4 位作者2014-12-31Journal of Korean Society for Atmospheric Environment

A series of experiments using atmospheric-pressure non-thermal plasma coupled with transition metal catalysts were performed to remove ethylene from agricultural storage facilities. The non-thermal plasma was created by dielectric barrier discharge, which was in direct contact with the catalyst pellets. The transition…

Catalytic Processes in Materials ScienceGas Sensing Nanomaterials and SensorsPlasma Applications and Diagnostics

Squareness of NdFeB Stoner-Wohlfarth Hysteresis

Marcos Flávio de Campos、Fernanda A.S. da Silva、José Adílson de Castro2014-12-31Materials science forum

Hysteresis curves were calculated according the Stoner-Wohlfarth (SW) model using values of K2/K1 from zero up to 0.25 (where K2 is the 2nd order anisotropy constant and where K1 is the 1st order anisotropy constant). The SW calculations assume Nd2Fe14B nanocrystalline magnets with single domain particle size (grain d…

Magnetic properties of thin filmsMagnetic Properties and ApplicationsMagnetic Properties of Alloys

A Breakage-Stop System for Linen Wet Spinning Frame

Jin Bo、Lijun Zhao、Shiqiang Zhu2014-12-31The Open Electrical & Electronic Engineering Journal

A multi-way control system for spun yarn breakage detecting and tow stopping is presented for linen wet spinning frame upgrade in medium-sized businesses of southeastern China. The signals from periodic rotations of spun yarns are picked by piezoelectric sensors. After input protection and multiplexers, the weak volta…

Textile materials and evaluationsVibration and Dynamic AnalysisAdvanced Measurement and Detection Methods