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Elastic-plastic thermal stress analysis of an aluminum composite disc under parabolic thermal load distribution
Altan. Gurkan, Topcu. Muzaffer, Bektas. Numan-Behlul, Altan. Burcin-Deda 대한기계학회 Journal of mechanical science and technology 10 Pages
대한기계학회 Journal of mechanical science and technology 2008, Vol.22 No.12 2318-2327 (10 pages)
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Mechanical and thermal properties of MWCNT-reinforced epoxy nanocomposites by vacuum assisted resin transfer molding
Si-Eun Lee, Seho Cho, Young-Seak Lee 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.1 4 32-37 (6 pages)
vacuum assisted resin transfer molding (VARTM) method. The mechanical properties, fracture surface morphologies, and thermal stabilities of these nanocomposites are evaluated for epoxy resins with various amounts of MWCNTs. Composites consisting of different amounts of MWCNTs displayed an increase of the work of adhesion between the MWCNTs and the matrix, which improved both the tensile and impact strengths of the composites. The tensile and impact strengths of the MWCNT/epoxy composite improved... -
Disorientation angle influence on the thermal residual stresses in carbon multilayered composite plates of different thicknesses
Olga Bitkina, Ki-Weon Kang, Jang-Ho Lee 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 13 98-102 (5 pages)
One of the most acute problems in studying composite stress-strain states is determining the initial residual stresses during the design of layered construction elements. The full stress?strain state of composite constructions consists of the initial (generated during the manufacturing process) and operating (generated during the working period) stages. A thorough investigation of the initial stage of the stress-strain state is very important to finding the total stresses and deformations, and... -
Influence of Welding Residual Stress on the Mechanical Behavior of Externally Loaded Dissimilar SS400-STS304 Steel Weldment
방희선, 방한서, 김유철, 주성민, 좌순원, 노찬승, Bang. Hee-Seon, Bang. Han-Sur, Kim. You-Chul, Joo. Sung-Min, Joa. Soon-Won, Ro. Chan-Seoung 대한용접접합학회 大韓溶接·接合學會誌 8 Pages
대한용접접합학회 大韓溶接·接合學會誌 2009, Vol.27 No.5 34-41 (8 pages)
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Effect of fiber-matrix adhesion on the fracture behavior of a carbon fiber reinforced thermoplastic-modified epoxy matrix
H.J. Carrillo-Escalante, A. ?lvarez-Castillo, A. Valadez-Gonz?lez, P. J. Herrera-Franco 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2016, Vol.19 6 47-56 (10 pages)
known silane, (3-glycidoxy propyl trimethoxysilane) coupling agent. Toughness was determined using the double cantilever test, together with surface analysis after failure using scanning electron microscope. The presence of polysulfone particles improved the fracture behavior of the composite, but fiber-matrix adhesion seemed to play a very important role in the performance of the composite material. There appeared to be a synergy between the matrix modifier and the fibermatrix adhesion coupling... -
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... -
The impact fracture behaviors of CFRP/EVA composites by drop-weight impact test
Sun-Ho Go, Hong-Gun Kim, Hee-Jae Shin, Min-Sang Lee, Hyun-Gyung Yoon, Lee-Ku Kwac 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 4 23-32 (10 pages)
analyze the mechanical and thermal properties caused by the changes in the ratio of carbon fiber reinforced plastic (CFRP) to ethylene vinyl acetate (EVA) laminations. The ratios of CFRP to EVA were changed from 10:0 (pure CFRP) to 9:1, 8:2, 6:4, and 5:5 by manufacturing five different types of samples, and at the same time, the mechanical/thermal properties were analyzed with thermo-graphic images. As the ratio of the CFRP lamination was increased, in which the energy absorbance is dispersed by... -
Characterization and influence of shear flow on the surface resistivity and mixing condition on the dispersion quality of multi-walled carbon nanotube/polycarbonate nanocomposites
Young Sil Lee, Kwan Han Yoon 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 3 86-92 (7 pages)
Multi-walled carbon nanotube (MWCNT)/polycarbonate (PC) nanocomposite was prepared by direct melt mixing to investigate the effect of the shear rate on the surface resistivity of the nanocomposites. In this study, an experiment was carried out to observe the shear induced orientation of the MWCNT in the polymer matrix using a very simple melt flow indexer with various loads. The compression-molded, should be eliminated. MWCNT/PC nanocomposite sample exhibited lower percolation thresholds (at 0.8... -
Carbon nanofiber-reinforced polymeric nanocomposites
Changwoon Jang, John Hutchins, Jaesang Yu 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2013, Vol.14 No.4 1 197-205 (9 pages)
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압축잔류응력이 판의 파괴 특성에 미치는 영향에 관한 실험적 평가
장창두, 박용관, 송하철, 김병일, Jang. Chang-Doo, Park. Yong-Kwan, Song. Ha-Cheol, Kim. Byung-I 한국항해항만학회 한국항해항만학회지 6 Pages
한국항해항만학회 한국항해항만학회지 2002, Vol.26 No.4 435-440 (6 pages)
잔류응력이 판의 파괴 특성에 미치는 영향의 정량적 평가를 위하여, 균열이 존재하는 CT(Compact Tension) 시편에 가스 토오치 (gas torch)를 이용한 국부 가열을 실시하여 인위적인 잔류응력을 생성시키고, 열탄소성 유한요소해석을 통하여 생성된 잔류응력장을 평가하였으며, 잔류응력이 존재하는 시편과 잔류응력이 존재하지 않는 시편에 대한 파괴인성 실험을 실시하여 이들의 결과를 파괴저항 선도 상에서 비교, 분석함으로써 압축 잔류응력이 파괴 특성에 미치는 영향을 정량화하였다. -
TMCP 강판의 고유변형도 기반 열변형 해석법 개발
하윤석, 양진혁, 원석희, 이명수, Ha. Yun-Sok, Yang. Jin-Hyuk, Won. Seok-Hee, Yi. Myung-Su 대한용접접합학회 大韓溶接·接合學會誌 6 Pages
대한용접접합학회 大韓溶接·接合學會誌 2008, Vol.26 No.3 61-66 (6 pages)
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선체 용접부의 균열진전 및 피로수명예측에 관한 연구(II)
김경수, 심천식, 권영빈, 고희승, 기혁근, Kim. Kyung-Su, Shim. Chun-Sik, Kwon. Young-Bin, Ko. Hee-Seung, Ki. Hyeok-Geun 대한조선학회 大韓造船學會 論文集 9 Pages
대한조선학회 大韓造船學會 論文集 2008, Vol.45 No.6 679-687 (9 pages)
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용접변형 고정도 예측을 위한 지배인자의 특정
이재익, 장경호, 김유철, Lee. Jae-Yik, Chang. Kyong-Ho, Kim. You-Chul 대한용접접합학회 大韓溶接·接合學會誌 6 Pages
대한용접접합학회 大韓溶接·接合學會誌 2013, Vol.31 No.5 1-6 (6 pages)
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Effects of thermoforming on the physical and mechanical properties of thermoplastic materials for transparent orthodontic aligners
Jeong-Hyun Ryu, Jae-Sung Kwon, Heng Bo Jiang, Jung-Yul Cha, Kwang-Mahn Kim 대한치과교정학회 The Korean Journal of Orthodontics 10 Pages
대한치과교정학회 The Korean Journal of Orthodontics 2018, 제 48권 제 5호 5 316-325 (10 pages)
a thermal vacuum. Transparency, water absorption and solubility, surface hardness, and the results of three-point bending and tensile tests were evaluated before and after thermoforming. Data were analyzed using one-way analysis of variance and Student’s t -test. Results: After thermoforming, the transparency of Duran and Essix A+ decreased, while the water absorption ability of all materials; the water solubility of Duran, Essix A+, and Essix ACE; and the surface hardness of Duran and Essix A+... -
Continuous straight archwire에 의하여 발생하는 force system의 분석
최광철(Kwang-Chul Choy), 손병화(Byung Hwa Sohn) 대한치과교정학회 The Korean Journal of Orthodontics 10 Pages
대한치과교정학회 The Korean Journal of Orthodontics 1996, 제 26권 제 3호 6 281-290 (10 pages)
Edgewise bracket에 continuous straight archwire를 장착 했을 때 각 bracket에 발생하는 force system은 statically indeterminate system이기 때문에 임상적으로 측정이 어렵다. 이에 본 연구는 linear beam theory를 도입하여 full arch에 straight wire가 장착된 경우 geometry(a/b), 재질, 단면의 모양, interbracket distance에 관계없이 발생 가능한 모든 상태를 설명할 수 있는 식을 유도하고 일례의 분석을 통하여 다음과 같은 결과를 얻었다. 1. Bilateral fixed beam의 양끝에서 발생하는 force system을 알 수 있는 계산식을... -
A review: synthesis and applications of graphene/chitosan nanocomposites
Hui Yuan, Long-Yue Meng, Soo-Jin Park 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2016, Vol.17 No.1 2 11-17 (7 pages)
promising material with excellent electrical, thermal, mechanical, and optical properties, which play important roles in most fields. Researchers have achieved considerable progress with graphene. Chitosan (CS) is a natural polymer that has been studied intensively owing to its specific formation, high chemical resistance, and excellent physical properties. These outstanding properties have led to its universal use in applications such as textile fabrics, tissue engineering, medicine and health,...
