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전체 선택해제
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본문검색 결과만 보기
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A constitutive model for concrete confined by steel reinforcement and carbon fiber reinforced plastic sheet
Li. Yeou-Fong, Fang. Tsang-Sheng 테크노프레스 Structural engineering and mechanics : An international journal 20 Pages
테크노프레스 Structural engineering and mechanics : An international journal 2004, Vol.18 No.1 21-40 (20 pages)
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Effect of fiber reinforcement on impact strength of heat polymerized polymethyl methacrylate denture base resin: in vitro study and SEM analysis
Mowade. Tushar Krishnarao, Dange. Shankar Pandurang, Thakre. Mrunali Balkrushna, Kamble. Vaibhav Deorao 대한치과보철학회 The journal of advanced prosthodontics 7 Pages
대한치과보철학회 The journal of advanced prosthodontics 2012, Vol.4 No.1 30-36 (7 pages)
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The effects of glass fiber reinforcement on the mechanical behavior of polyurethane foam
Han. Dae-Suk, Park. In-Beom, Kim. Myung-Hyun, Noh. Byeong-Jae, Kim. Wha-Soo, Lee. Jae-Myung 대한기계학회 Journal of mechanical science and technology 4 Pages
대한기계학회 Journal of mechanical science and technology 2010, Vol.24 No.1 263-266 (4 pages)
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Mechanical and electrical properties of cement paste incorporated with pitch-based carbon fiber
Inkyu Rhee, Jin Hee Kim, Sang Hee Park, Sungho Lee, Bong Ryeul Ryu, Yoong Ahm Kim 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2017, Vol.23 4 22-29 (8 pages)
The compressive strength and electrical resistance of pitch-based carbon fiber (CF) in cementitious materials are explored to determine the feasibility of its use as a functional material in construction. The most widely used CFs are manufactured from polyacrylonitrile (PAN-based CF). Alternatively, short CFs are obtained in an economical way using pitch as a precursor in a melt-blown process (pitch-based CF), which is cheaper and more eco-friendly method because this pitch-based CF is basically... -
Fabrication of carbon fiber SMC composites with vinyl ester resin and effect of carbon fiber content on mechanical properties
Haksung Lee, Mongyoung Huh, Jaeyoung Yoon, Dasom Lee, Seonyul Kim, Shinjae Kang 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 11 101-104 (4 pages)
strength and weight reduction make fiber composite materials an attractive replacement for metal components. The development of composites like carbon fiber reinforced plastic and related production technologies have contributed to the increasing application of fiber composite materials. Many new components have recently been adapted, including structural parts such as roof frames, under floors, trunk hoods and so on, using sheet molding compound (SMC) and resin transfer molding processes [1-5]. -
Effect of the surface modification using MWCNTs with different L/D by two different methods of deposition on the IFSS of single carbon fiber-epoxy resin composite
Minerva L. Herrera-Sosa, Alex Valadez-Gonz?lez, Humberto V?zquez-Torres, Pierre G. Mani-Gonz?lez, Pedro J. Herrera-Franco 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 3 18-27 (10 pages)
deposition on carbon fibers (CF). Before the hierarchical reinforcement with CF-MWCNT, the CFs were treated with 3-glycidoxypropyltrimethoxysilane, a coupling agent (Z6040) and with poly(amidoamine) (PAMAM) a dendrimer containing an ethylenediamine core and amine surface groups. The MWCNT were deposited on the CF using two methods, by electrostatic attraction and by chemical reactions. The changes in the CF surface morphology after the MWCNT deposition were analyzed using SEM, which revealed a... -
Yield enhancement of matrix precursor in short carbon fiber reinforced randomly oriented carbon/carbon composite
Thakur Sudesh Kumar Raunija, Sharad Chandra Sharma, Anil Verma 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2016, Vol.19 7 57-65 (9 pages)
for a duration of 5 h could withstand almost two-fold greater hot-pressing pressure without resulting in exudation as compared to that of a 1 h stabilized matrix precursor. The enhanced hot-pressing pressure significantly improved the yield of the matrix precursor. As a consequence, the densification and mechanical properties were increased significantly. Further, the matrix precursor stabilized for a duration of 20 h or more failed to provide proper and uniform binding of the reinforcement. -
Hybrid Reinforcement System을 이용한 콘크리트 교량상판 슬래브의 거동
박상렬, 조근희, Park. Sang-Yeol, Cho. Keun-Hee 한국콘크리트학회 콘크리트학회논문집 8 Pages
한국콘크리트학회 콘크리트학회논문집 2004, Vol.16 No.4 451-458 (8 pages)
연구는 재래 철근과 Fiber Reinforced Polymer 보강재를 사용한 Hybrid Reinforcement System의 기본 개념과 적용성에 대해 기술하고 있다. 콘크리트 교량상관은 보로서 지지되고 상하 두층의 보강재로 인장보강되어 있다. HRS를 이용한 콘크리트 교량상판에서는 보 지지점 부근의 부모멘트에 대한 상부 인장력은 FRP 봉으로 저항하고 보 지지점 중앙부근의 하부인장력은 재래의 철근으로 저항한다. HRS를 이용한 콘크리트 교량상판은 FRP 봉은 비 부식성이고, 부식되기 쉬운 철근은 교량상판 위로부터 가급적 멀리하여 부식물질의 침투를... -
Bond Strength of Carbon Fiber Sheet on Concrete Substrate Processed by Vacuum Assisted Resin Transfer Molding
Uddin. N., Shohel. M., Vaidya. U.K., Serrano-Perez. J.C. 한국복합재료학회 Advanced composite materials : the official journal of the Japan Society of Composite Materials and 23 Pages
한국복합재료학회 Advanced composite materials : the official journal of the Japan Society of Composite Materials and 2008, Vol.17 No.3 277-299 (23 pages)
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A new method for earthquake strengthening of old R/C structures without the use of conventional reinforcement
Tsonos. Alexander-Dimitrios G. 테크노프레스 Structural engineering and mechanics : An international journal 13 Pages
테크노프레스 Structural engineering and mechanics : An international journal 2014, Vol.52 No.2 391-403 (13 pages)
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Flexural behavior of concrete beams reinforced with aramid fiber reinforced polymer (AFRP) bars
Kim. Min Sook, Lee. Young Hak, Kim. Heecheul, Scanlon. Andrew, Lee. Junbok 테크노프레스 Structural engineering and mechanics : An international journal 19 Pages
테크노프레스 Structural engineering and mechanics : An international journal 2011, Vol.38 No.4 459-477 (19 pages)
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Experimental bond behavior of hybrid rods for concrete reinforcement
Nanni. Antonio, Nenninger. Jeremy S., Ash. Kenneth D., Liu. Judy 테크노프레스 Structural engineering and mechanics : An international journal 15 Pages
테크노프레스 Structural engineering and mechanics : An international journal 1997, Vol.5 No.4 339-353 (15 pages)
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Influence of hot-pressing pressure on the densification of short-carbon-fiber-reinforced, randomly oriented carbon/carbon composite
Thakur Sudesh Kumar Raunija and Sharad Chandra Sharma 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.1 4 25-33 (9 pages)
The prime objective of this research was to study the influence of hot-pressing pressure and matrix-to-reinforcement ratio on the densification of short-carbon-fiber-reinforced, randomly oriented carbon/carbon-composite. Secondary objectives included determination of the physical and mechanical properties of the resulting composite. The ‘hybrid carbon-fiberreinforced mesophase-pitch-derived carbon-matrix’ composite was fabricated by hot pressing. During hot pressing, pressure was varied from 5... -
Tribological properties of carbon fiber-reinforced aluminum composites processed by spark plasma sintering
Ki Hoon Jung, Seungjin Nam, Sung-Soo Kang, Bon-Cheol Ku, Yun Hyuk Bang, Jun Yeon Hwang 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 14 103-106 (4 pages)
The development of light-weight and high-strength materials have gained attention to meet the evergrowing demands for safer and fuel-efficient automobiles. Thus, the importance and applications of composite materials are gradually increasing [1]. In the field of metal-matrix composite manufacturing, reinforcing agents are added to the metal matrix in the form of powders, whiskers, and fibers to improve the mechanical properties of metals [2]. Fibers have been used since the 1950s as structural... -
Preparation and characterization of carbon fiber-reinforced thermosetting composites: a review
Fan-Long Jin, Soo-Jin Park 한국탄소학회 Carbon Letters 11 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 1 67-77 (11 pages)
mainly by the quality of interfacial adhesion between the CFs and the polymer matrix. Surface treatments of CFs are generally carried out to introduce chemical functional groups on the fiber surfaces, which provide the ability to control the surface characteristics of CFs. In this study, we review recent experimental studies concerning various surface treatment methods for CFs. In addition, direct examples of the preparation and properties of CF-reinforced thermosetting composites are discussed. -
Fiber-reinforced composite resin을 이용한 전치부 결손 수복
박헌정, 김종수, 김용기, Park. Heon-Jeong, Kim. Jong-Soo, Kim. Yong-Kee 대한소아치과학회 大韓小兒齒科學會誌 7 Pages
대한소아치과학회 大韓小兒齒科學會誌 1999, Vol.26 No.1 62-68 (7 pages)
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Dopamine Modulates Corticostriatal Synaptic Transmission through Both D1 and D2 Receptor Subtypes in Rat Brain
HyunHoLee, SeJoonChoi, Ki-JungKim, HyeongSeokCho, SeongYunKim, Ki-WugSung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.5 2 263-268 (6 pages)
Striatum has important roles in motor control, habitual learning and memory. It receives glutamatergic inputs from neocortex and thalamus, and dopaminergic inputs from substantia nigra. We examined effects of dopamine (DA) on the corticostriatal synaptic transmission using in vitro extracellular recording technique in rat brain corticostriatal slices. Synaptic responses were elicited by stimulation of cortical glutamatergic inputs on the corpus callosum and recorded in the dorsal striatum.... -
Mediation of N-methyl-D-aspartate on Neuropeptide Y Expression Induced by Morphine in Mouse Cerebellum
Gee-younKwon, Soo-kyungKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.6 4 479-485 (7 pages)
not only naloxone (100 mg/kg, i.p.) but also a noncompetitive NMDA antagonist, MK-801 (0.3 mg/kg, i.p.). The competitive NMDA antagonist, AP-5 (0.9 mg/kg, i.p.) slightly attenuated the increased NPY expression by morphine. Also, the finding similar to morphine was shown by NMDA (70 mg/kg, i.p.) treatment. Our results indicate that NPY was inducible by morphine and this might reflect activation of NMDA receptors in granule cells that relay mossy fiber inputs to Purkinje cells via parallel fibers. -
정신분열증에서의 정보처리와 그 신경해부학 ᅳ정신병리의 신경과학적 이해를 위해ᅳ
대한신경정신의학회 신경정신의학 1991, 제 30권 제 4호 2 629-651 (23 pages)
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철근콘크리트 연결보 대체상세의 구조성능 검증에 대한 실험적 연구
김선웅, 박완신, 장영일, 윤현도, 엄남용, 김선우 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 8 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2015, 제 5권 제 2호 22 199-206 (8 pages)
최근 들어 동북아 아시아 지역에 지진의 발생빈도가 급격하게 늘어나고 있는 상황이다. 지진 발생 시 수 많은 가옥의 붕괴, 사회기반 시설의 파괴는 물론 수많은 인명피해가 발생되고 있어 이에 따른 대책이 필요한 실정이다. 따라서 지진에 대해 효과적으로 거동하는 재료 및 구조시스템에 대한 연구 가 국내·외적으로 활발히 수행되고 있는 가운데 지진에 대해 효과적으로 거동하는 내진시스템 가운데 하나인 연결보에 대한 연구가 활발히 수행되고 있다.[1]. 그러나 이러한 연결보는 ACI 318-05 및 318-08 규준식에 의하면 폭이 좁은... -
Morphologies and surface properties of cellulose-based activated carbon nanoplates
Seulbee Lee, Min Eui Lee, Min Yeong Song, Se Youn Cho, Young Soo Yun, Hyoung-Joon Jin 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2016, Vol.20 5 32-38 (7 pages)
In this study, cellulose nanoplates (CNPs) were fabricated using cellulose nanocrystals obtained from commercial microcrystalline cellulose (MCC). Their pyrolysis behavior and the characteristics of the product carbonaceous materials were investigated. CNPs showed a relatively high char yield when compared with MCC due to sulfate functional groups introduced during the manufacturing process. In addition, pyrolyzed CNPs (CCNPs) showed more effective chemical activation behavior compared with... -
Phenylethynyl-terminated polyimide, exfoliated graphite nanoplatelets, and the composites: an overview
Donghwan Cho, Lawrence T. Drzal 한국탄소학회 Carbon Letters 11 Pages
한국탄소학회 Carbon Letters 2016, Vol.19 1 1-11 (11 pages)
high-temperature sizing material for carbon fiber-reinforced polymer matrix composites, PETI-5 imidization and thermal curing behaviors have been extensively investigated based on the phenylethynyl end-group reaction. These studies are reviewed here. In addition, the use of PETI-5 to enhance interfacial adhesion between carbon fibers and a bismaleimide (BMI) matrix, as well as the dynamic mechanical properties of carbon/BMI composites, are discussed. Reports on the thermal expansion behavior of... -
Microstructural changes of polyacrylonitrile-based carbon fibers (T300 and T700) due to isothermal oxidation (1): focusing on morphological changes using scanning electron microscopy
Seong-Moon Oh, Sang-Min Lee, Dong-Su Kang, Jae-Seung Roh 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2016, Vol.18 3 18-23 (6 pages)
as a reinforcement for composite materials. PAN-based carbon fibers T300 and T700 were isothermally oxidized in air, and microstructural changes caused by oxidation reactions were examined. The results showed a decrease in the rate of oxidation with increasing burn-off for both T300 and T700 fibers. The rate of oxidation of T300 fibers was two times faster than that of T700 fibers. The diameter of T700 fibers decreased linearly with increasing burn-off. The diameter of T300 also decreased with... -
Flexural properties, interlaminar shear strength and morphology of phenolic matrix composites reinforced with xGnP-coated carbon fibers
Jong Kyoo Park, Jae Yeol Lee, Lawrence T. Drzal, Donghwan Cho 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2016, Vol.17 No.1 5 33-38 (6 pages)
the xGnP-coated carbon fiber/phenolic matrix composites were investigated in terms of their longitudinal flexural strength and modulus, interlaminar shear strength, and by optical and scanning electron microscopic observations. The results were compared with a phenolic matrix composite counterpart prepared without xGnP. The flexural properties and interlaminar shear strength of the xGnP-coated carbon fiber/phenolic matrix composites were found to be higher than those of the uncoated composite.... -
Manufacturing and characteristics of PAN-based composite carbon fibers containing cellulose particles
Jee-Woo Yang, Da Young Jin, Ji Eun Lee, Seung Goo Lee, Won Ho Park 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.3 7 203-210 (8 pages)
This study fabricated low thermal conductive polyacrylonitrile (PAN)-based carbon fibers containing cellulose particles while maintaining their mechanical properties. The high thermal conductivity of carbon fibers limits their application as a high temperature insulator in various systems such as an insulator for propulsion parts in aerospace or missile systems. By controlling process parameters such as the heat treatment temperature of the cellulose particles and the amount of cellulose added,... -
Effect of stacking sequence on the flexural and fracture properties of carbon/basalt/epoxy hybrid composites
Jae Il Lim, Kyong Yop Rhee, Hyun Ju Kim, Dong Ho Jung 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.2 9 125-128 (4 pages)
In this study, the effect of stacking sequence on the flexural and fracture properties of carbon/ basalt/epoxy hybrid composites was investigated. Two types of carbon/basalt/epoxy hybrid composites with a sandwich form were fabricated: basalt skin-carbon core (BSCC) composites and carbon skin-basalt core (CSBC) composites. Fracture tests were conducted and the fracture surfaces of the carbon/basalt/epoxy hybrid composites were then examined using scanning electron microscopy (SEM). The results... -
Effect of chemically reduced graphene oxide on epoxy nanocomposites for flexural behaviors
Seul-Yi Lee, Mi-Hwa Chong, Mira Park, Hak-Yong Kim, Soo-Jin Park 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.1 9 67-70 (4 pages)
the mechanical properties of the epoxy nanocomposites. It was found that the presence of RGO improved both flexural strength and modulus of the epoxy nanocomposites till the RGO loading reached 0.4 wt%, and then decreased. The optimum loading achieved about 24.5 and 25.7% improvements, respectively, compared to the neat-epoxy composites. The observed mechanical reinforcement might be an enhancement of mechanical interlocking between the epoxy matrix and RGO due to the unique planar structures. -
Morphological optimization of process parameters of randomly oriented carbon/carbon composite
Thakur Sudesh Kumar Raunija, Sushant Krunal Manwatkar, Sharad Chandra Sharma, Anil Verma 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.1 3 25-31 (7 pages)
a randomly oriented discrete length hybrid carbon fiber reinforced carbon matrix composite. The composite is fabricated by moulding of a slurry into a preform, followed by hot-pressing and carbonization. Heating rates of 0.1, 0.2, 0.3, 0.5, 1, and 3.3°C/min and pressures of 5, 10, 15, and 20 MPa are applied during hot-pressing. Matrix precursor to reinforcement weight ratios of 70:30, 50:50, and 30:70 are also considered. A microstructure analysis of the carbon/ carbon compacts is performed for... -
Strenthening of C/C Composites through Ceramer Matrix
S.R.Dhakate, R.B.Mathur, T.L.Dhami 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2004, Vol.5 No.4 1 159-163 (5 pages)
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Oxidation Resistance and Graphitization of Boron Oxide Implanted Carbon/Carbon Composites
Hyeok-Jong Joo, In-Hwan Oh, Il-Hwan Ahn 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2004, Vol.5 No.3 5 127-132 (6 pages)
탄소/탄소 복합재료는 열용량이 크고 비강도가 높으며,특히 진공 및 불활성 분위기 하에서 2500℃ 이상의 초고온에서도 뛰어난 열충격 저항성과 기계적 물성이 유지되기 때문에 현재까지 지속적인 관심을 받고 있다. 그러나 탄소/탄소 복합재가 갖는 이러한 많은 장점에도 불구하고. 산화 분위기에서 대략 온도가 500℃ 정도에 이르면 탄소 물질이 이들 기체와 반응을 일으켜 일산화탄소나 이산화탄소로 산회되므로 급격한 물성의 저하를 나타내는 문제점이 있다. 이러한 문제는 특히 높은 온도를 요구하는 곳에의 응용과 수증기, 산소,...
