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Articles 1 - 30 of 61
Full-Text Articles in Materials Science and Engineering
Rheological Properties And Structural Build-Up Of 3d Printed Magnesium Potassium Phosphate Cement, Hui Zhi Zhao
Rheological Properties And Structural Build-Up Of 3d Printed Magnesium Potassium Phosphate Cement, Hui Zhi Zhao
International Conference on Durability of Concrete Structures
This paper focuses on the rheological properties of 3D printed magnesium potassium phosphate cements (MKPCs) with different magnesium-to-phosphate (M/P) mass ratio, MgO fineness and supplementary cementitious materials (SCMs) types. The variable shear rate tests were used to monitor the extrudability. The highest slope of the evolution of storage modulus (G') and the maximum static yield stress (Mτs) value were used as an indication of the rigidification rate. The increased M/P mass ratio, MgO fineness and SCMs addition resulted in the promoted structural build-up of 3D printed MKPCs. The consistency between the evolution of G' and Mτs with …
Mechanical Properties And Microstructure Of High Strength Lc3 Pastes With Varying Limestone/Calcined Clay Ratios And Different Curing Conditions, Yemin Dong
International Conference on Durability of Concrete Structures
研究（抗施工蒸馏）石石和石榴石在淀粉胶系统（即0标准和低水印）下的水胶系统（即0标准和低水墨）X射线比、水量值水量-电子背基相关研究.61.25 .25.25.25.0.25.25.25.25.25.0.25.25.25.25.25.1.25.7.25.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.25.1.25.25.1.25.1.25.1.25.1.25.1.25.1 .25.1.25.1.25.1.25.1.25.1.25.0.0.0.0.0.0.0.00.0.0.1.25.1.25.1.25.1.25.1.25.0.0.0.00.0.0.0.0.0.0.0.0.0.0.0.0.0.00.0 .00.0.00.X射线比值、水量-电子显微镜相关研究测量值。早期的水泥水化程度小水的压合含煤量，降低了水泥石的。因此，需要采用合适的钙铝内容和体系以提高碳系统的性能。
Mechanical And Thermal Insulation Properties Of Clay-Based Lightweight Concrete, Chuang Shi, Chuanlin Hu
Mechanical And Thermal Insulation Properties Of Clay-Based Lightweight Concrete, Chuang Shi, Chuanlin Hu
International Conference on Durability of Concrete Structures
建材生产和住宅采暖将消耗大量能源并排放大量CO2。在混凝土制备中，使用陶土制备具有优异隔热性能的轻质混凝土，并使用煅烧粘土代替部分波特兰水泥，可以大大降低能耗。本研究采用页岩陶土和陶砂分别作为粗骨料和细骨料制备轻质混凝土。首先，确定最佳体积砂比。然后，使用煅烧粘土和石灰石的剂量从30%，50%到70%。研究了煅烧粘土和石灰石含量对混凝土微观结构、力学性能和隔热性能的影响。结果表明，最佳体积砂比为50%。当煅烧粘土和石灰石的用量为30%时，强度在所有年龄段最高，28 d时强度可达33.6 MPa，比对照组高12%。当更换水平不断增加时，所有年龄段的实力开始下降。所制备的粘土基轻质混凝土的导热系数低至0.144 W/mK，表现出优异的保温性能。本研究制备的轻质混凝土具有较高的强度和优异的保温性能，具有良好的应用前景。
The Effect Of Calcium Nitrate On The Hydration Of Calcium Aluminate Cement At Different Curing Temperatures, Hongxia Wang, Guizhi Diao, Guanghua Liu, H Wang, Lixiong Gao, Guangwei Liu
The Effect Of Calcium Nitrate On The Hydration Of Calcium Aluminate Cement At Different Curing Temperatures, Hongxia Wang, Guizhi Diao, Guanghua Liu, H Wang, Lixiong Gao, Guangwei Liu
International Conference on Durability of Concrete Structures
Phase conversion in calcium aluminate cements (CAC) induces significant volumetric instability; it would result in an increase in porosity and decrease in strength in CAC. In this study, calcium nitrate (CN) as a phase conversion inhibitor, the effect of CN on the hydration of CAC at different curing temperatures was studied. Xray diffraction, thermal analysis, SEM, isothermal calorimetry and the compressive strength were conducted on the CAC dosages of 0%, 5%, 10% and 15%CN cured at 20�, 30�, 40� and 50�. The results show CN can retard CAC hydration, alter the characters of the hydrates of CAC systems and avoid …
Computational Catalysis: Creating A User-Friendly Tool For Research And Education, Kevin P. Greenman, Peilin Liao
Computational Catalysis: Creating A User-Friendly Tool For Research And Education, Kevin P. Greenman, Peilin Liao
The Summer Undergraduate Research Fellowship (SURF) Symposium
Catalysis is used in a significant portion of production processes in the industrialized world, including most processing of chemicals and fuels. This makes maximizing the efficiency of catalysts a high priority. However, the immense number of candidates for new catalysts precludes the possibility of testing all of them by experiments. Density functional theory (DFT) has been widely and successfully used to calculate material properties relevant to catalysis and to screen promising candidates for experimental testing, but there currently exists no publicly- available, user-friendly tool for performing these DFT calculations. This work details the development of such a tool for nanoHUB.org …
Thermophotovoltaic Devices: Combustion Chamber Optimization And Modelling To Maximize Fuel Efficiency, Arnold Chris Toppo, Ernesto Marinero, Zhaxylyk Kudyshev
Thermophotovoltaic Devices: Combustion Chamber Optimization And Modelling To Maximize Fuel Efficiency, Arnold Chris Toppo, Ernesto Marinero, Zhaxylyk Kudyshev
The Summer Undergraduate Research Fellowship (SURF) Symposium
Currently, 110 billion cubic meters of natural gas (primarily methane), a potent greenhouse gas, are flared off for environmental and safety reasons. This process results in enough fuel to provide the combined natural gas consumption of Germany and France. The research team developed a thermophotovoltaic device to convert thermal energy to electricity at a high efficiency using proprietary emitters and combustion system. With the current focus being fuel efficiency and the combustion process, the assembly was simulated using ANSYS Fluent modelling software and the following parameters were optimized: air/fuel ratios, flow rates, and inlet sizes. Simultaneously the heat transfer across …
Microstructure Evolution During Compaction Of Powder Blends, Ayush Giri, Marcial Gonzalez, Yasasvi Bommire
Microstructure Evolution During Compaction Of Powder Blends, Ayush Giri, Marcial Gonzalez, Yasasvi Bommire
The Summer Undergraduate Research Fellowship (SURF) Symposium
Powder compaction is a manufacturing technology used to transform powder particles into a solid material with unique anisotropic microstructure and low porosity. It is widely used by pharmaceutical companies to manufacture tablets with desired properties. These properties are the result of the microstructure obtained during the compaction process. Therefore, it is imperative to understand the mechanics underneath the constituent granular particles that eventually contribute to properties of the manufactured tablets. Computational simulation tools have been developed in the past to study powder compaction for pharmaceutical tablets. However, most of the already existing tools limit their scope to study individual particles …
Modelling Catalytic Structures With Python And Ase, Tommie L. Day, Peilin Liao, Pilsun Yoo
Modelling Catalytic Structures With Python And Ase, Tommie L. Day, Peilin Liao, Pilsun Yoo
The Summer Undergraduate Research Fellowship (SURF) Symposium
Voltaic cells hold great potential as a source of clean electricity generation. These fuel sources are more efficient than combustion engines, and they do not produce environmentally harmful by-products. The electrochemical reaction which occurs within the cell is typically catalyzed by platinum, which increases the cost. The search for a better performing, less expensive catalyst is hindered by the lack of a complete, predictive theory of catalysis. Using Quantum Espresso and the Atomic Simulation Environment library for Python, we created a tool for nanoHUB.org which can visually and computationally model catalytic surfaces. This tool can simulate nanoparticles and metallic surfaces …
Investigating Tantalum As A Plasma-Facing Component For Nuclear Fusion Reactors, Arvind Sundaram, Jitendra K. Tripathi, Theodore J. Novakowski, Ahmed Hassanein Ph. D.
Investigating Tantalum As A Plasma-Facing Component For Nuclear Fusion Reactors, Arvind Sundaram, Jitendra K. Tripathi, Theodore J. Novakowski, Ahmed Hassanein Ph. D.
The Summer Undergraduate Research Fellowship (SURF) Symposium
Nuclear fusion is a potential source for producing unlimited environment-friendly energy. Tungsten (W) is selected as the primary candidate material for plasma facing component in nuclear fusion reactors due to its high melting temperature (3695 K), low sputtering erosion yield and strong mechanical properties. However, recent investigations on W have confirmed that it undergoes severe surface morphology changes during low energy He plasma and/or ion irradiation similar to a harsh fusion environment. Additionally, our previous studies indicate that tantalum (Ta) may show better resistance to the harsh radiation environment and is therefore worthy of investigation. Hydrogen retention properties, specifically deuterium …
Simulating Dynamic Failure Of Polymer-Bonded Explosives Under Periodic Excitation, Rachel Kohler, Camilo Duarte Cordon, Marisol Koslowski
Simulating Dynamic Failure Of Polymer-Bonded Explosives Under Periodic Excitation, Rachel Kohler, Camilo Duarte Cordon, Marisol Koslowski
The Summer Undergraduate Research Fellowship (SURF) Symposium
Accidental mishandling of explosive materials leads to thousands of injuries in the US every year. Understanding the mechanisms behind the detonation process is crucial to prevent such accidents. In polymer-bonded explosives (PBX), high-frequency mechanical excitation generates thermal energy and can lead to an increase in temperature and vapor pressure, and potentially the initiation of the detonation process. However, the mechanisms behind this energy release, such as the effects of dynamic fracture and friction, are not well understood. Experimental data is difficult to collect due to the different time scales of reactions and vibrations, so research is aided by running simulations …
Core-Shell Copper And Nickel Nanofoam: Uniform Electroplating And Properties, Hassan Zbib, David Bahr
Core-Shell Copper And Nickel Nanofoam: Uniform Electroplating And Properties, Hassan Zbib, David Bahr
The Summer Undergraduate Research Fellowship (SURF) Symposium
Characterizing materials on the nanoscale is a key factor to enhance nanotechnology in diverse applications, ranging from electronics to energy fields. However, controlling the structure of the material at the nanoscale or mimicking the nanoscale features of a structure that already exists requires linking processing conditions to the nanostructure. This work focuses on solids that show porous patterns at the nano-micro scale; these are often called cellular solids and classified into two categories: honeycombs and foams. This study focuses on nanofoams; with ligament dimensions in the sub-micron scale. Electrospinning has been developed to produce nanofoam structures of polymers with controlled …
Effect Of Thickness Of Anode Functional Layer On Electrochemical Performance Of Ni-Ce0.8gd0.2o1.9 Anode-Supported Solid Oxide Fuel Cells, Xueping Guo, Kaiping Peng, Chan Zheng, Wei Li, Wenzhe Chen
Effect Of Thickness Of Anode Functional Layer On Electrochemical Performance Of Ni-Ce0.8gd0.2o1.9 Anode-Supported Solid Oxide Fuel Cells, Xueping Guo, Kaiping Peng, Chan Zheng, Wei Li, Wenzhe Chen
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Study On Impact And Friction Properties Of Za45si3cu Alloy, Weihe Shi
Study On Impact And Friction Properties Of Za45si3cu Alloy, Weihe Shi
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Modelling The Evaporation Of Aluminum In Ti–6al–4v Alloy Melted With Electron Beam And Laser, Xuan Wang, Liang Wang, Liang S. Luo, Yan Q. Su, Xin Z. Li, Rui R. Chen, Jing J. Guo, Heng Z. Fu
Modelling The Evaporation Of Aluminum In Ti–6al–4v Alloy Melted With Electron Beam And Laser, Xuan Wang, Liang Wang, Liang S. Luo, Yan Q. Su, Xin Z. Li, Rui R. Chen, Jing J. Guo, Heng Z. Fu
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Study On Criterion Of Fabricating Columnar Dendrite Structure Dz466 Superalloy Based On Lmc Process, Xun Sun
Study On Criterion Of Fabricating Columnar Dendrite Structure Dz466 Superalloy Based On Lmc Process, Xun Sun
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Numerical Modeling And Seismic Assessment Of Smart Isolation System For High-Speed Railway Rc Bridge Subjected To Near-Field Ground Motions, Lingkun Chen
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Research Of Obtaining Of Composite Materials Based On Aluminum Matrix, Dmitry Kuis, Alexandr Volochko, Artem Shegidevich, Nikolay Svidunovich
Research Of Obtaining Of Composite Materials Based On Aluminum Matrix, Dmitry Kuis, Alexandr Volochko, Artem Shegidevich, Nikolay Svidunovich
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Research Of 3d Graphene Reinforced Aluminum Matrix Composites By Semisolid Processing, Mei Tang, Zhengbing Xu, Jianmin Zeng, Guoqiang He
Research Of 3d Graphene Reinforced Aluminum Matrix Composites By Semisolid Processing, Mei Tang, Zhengbing Xu, Jianmin Zeng, Guoqiang He
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
On The Lcf Behavior Of Cast Ni-Based Superalloy K3 Influenced By Eb-Pvd Nicocraly Coating At 1073 K, Tianquan Liang, Yili Wang, Yujie Li, Xiaoming Shen, Jianmin Zeng
On The Lcf Behavior Of Cast Ni-Based Superalloy K3 Influenced By Eb-Pvd Nicocraly Coating At 1073 K, Tianquan Liang, Yili Wang, Yujie Li, Xiaoming Shen, Jianmin Zeng
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Effect Of Er On Microstructure And Electrochemical Performance Of Al–Zn–In Anode, Zhengbing Xu
Effect Of Er On Microstructure And Electrochemical Performance Of Al–Zn–In Anode, Zhengbing Xu
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Molecular Dynamics Studies Of The Adsorption Behavior Of Methyl 3-((2-Mercaptophenyl)Imino)Butanoate As Corrosion Inhibitors On Copper Surface, Jianlin Sun, Sang Xiong, Xudong Yan, Yang Xu
Molecular Dynamics Studies Of The Adsorption Behavior Of Methyl 3-((2-Mercaptophenyl)Imino)Butanoate As Corrosion Inhibitors On Copper Surface, Jianlin Sun, Sang Xiong, Xudong Yan, Yang Xu
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Numerical Simulation Of Mechanical Wave Propagation During Solidification Of Zl205a Alloy, Wang Rujia, Wu Shi Ping, Chen Wei
Numerical Simulation Of Mechanical Wave Propagation During Solidification Of Zl205a Alloy, Wang Rujia, Wu Shi Ping, Chen Wei
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Effect Of Heat Input On Microstructure And Formability Of Dp980 Steel Welded Joints By Fiber Laser Welding, Qian Sun
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Materials Processing For Building High Field Magnets, Ke Han
Materials Processing For Building High Field Magnets, Ke Han
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Numerical Simulation And Experiments Analysis On Stiffness Control Mechanism Of Hyperboloid Shallow Shells, Zhao Lihong, Yu Haiping, Xing Zhongwen, Lei Chengxi, Wu Bin
Numerical Simulation And Experiments Analysis On Stiffness Control Mechanism Of Hyperboloid Shallow Shells, Zhao Lihong, Yu Haiping, Xing Zhongwen, Lei Chengxi, Wu Bin
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
The Influence Of Welding Parameters On Initial Instability Dynamics During Solidification, Fengyi Yu, Yanhong Wei, Xiaohong Zhan
The Influence Of Welding Parameters On Initial Instability Dynamics During Solidification, Fengyi Yu, Yanhong Wei, Xiaohong Zhan
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Prediction Of The Graphite Morphology And Nodularity Based On The Quantitative Sample Solidification Cooling Curves, Han Ye, Chao Li, Qingyou Han, Xiangjie Yang
Prediction Of The Graphite Morphology And Nodularity Based On The Quantitative Sample Solidification Cooling Curves, Han Ye, Chao Li, Qingyou Han, Xiangjie Yang
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Physical Simulation Of The Effect Of Mechanical Vibration On Feeding Flow During Solidification Of Paste Alloy, Chen Wei, Wu Shi Ping, Wang Rujia
Physical Simulation Of The Effect Of Mechanical Vibration On Feeding Flow During Solidification Of Paste Alloy, Chen Wei, Wu Shi Ping, Wang Rujia
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Analysis Of Optimal Process Conditions And Mechanical Properties On Nanocomposites According To Structural Changes Of Halloysite Nanotubes, Yun-Hae Kim, Soo-Jeong Park, Antonio Norio Nakagaito
Analysis Of Optimal Process Conditions And Mechanical Properties On Nanocomposites According To Structural Changes Of Halloysite Nanotubes, Yun-Hae Kim, Soo-Jeong Park, Antonio Norio Nakagaito
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.
Influence Of Pressure Field In Melts On Microstructure Formation In Solidification Processing, Milan Rakita, Qingyou Han
Influence Of Pressure Field In Melts On Microstructure Formation In Solidification Processing, Milan Rakita, Qingyou Han
The 8th International Conference on Physical and Numerical Simulation of Materials Processing
No abstract provided.