全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:Wei Liu , Feng Li , Fuhua Yan ...
来源:[J].China Foundry(IF 0.346), 2017, Vol.14 (2), pp.108-120Springer
摘要:Shrinkage porosity is a type of random distribution defects and exists in most large castings. Different from the periodic symmetry defects or certain distribution defects, shrinkage porosity presents a random “cloud-like” configuration, which brings difficulties in quan...
作者:D. Concer , P. V. P. Marcondes
来源:[J].Journal of the Brazilian Society of Mechanical Sciences and Engineering(IF 0.234), 2017, Vol.39 (8), pp.3079-3088Springer
摘要:The resulting porosity is responsible to 70% of failures on the high-pressure aluminum die casting process. The determination of the origin and setting the pore elimination is a complex mechanism. There are several factors that induce their occurrence. Thus, it is common to emplo...
作者:Martti Kaasalainen , Vladimir Aseyev , Eva von Haartman ...
来源:[J].Nanoscale Research Letters(IF 2.524), 2017, Vol.12 (1), pp.1-10Springer
摘要:... We hypothesize that conventional light scattering (LS) methods can be used for a rigorous characterization of medium sensitive nanoparticles’ properties, like size, stability, and porosity. Two fundamentally different silicon-based nanoparticles were made: porous silicon (...
作者:Yujie Yuan , Reza Rezaee
来源:[J].Energies(IF 1.844), 2019, Vol.12 (11)DOAJ
摘要:Porosity and pore size distribution (PSD) are essential petrophysical parameters controlling permeability and storage capacity in shale gas reservoirs. Various techniques to assess pore structure have been introduced; nevertheless, discrepancies and inconsistencies exist between ...
作者:BoJing Zhu , HuiHong Cheng , YanChao Qiao ...
来源:[J].Chinese Science Bulletin(IF 1.319), 2012, Vol.57 (4), pp.320-327Springer
摘要:Abstract(#br)Based on the hybrid hypersingular integral equation-lattice Boltzmann methods (HHIE-LBM), the porosity and permeability evolution and evaluation process in anisotropic saturated porosity multiscale-multiphase-multicomponent (ASP-MS-MP-MC) structures under ultra high...
作者:Van Hieu Bui , Minh Duc Bui , Peter Rutschmann
来源:[J].Water(IF 0.973), 2019, Vol.11 (7)DOAJ
摘要:In gravel-bed rivers, monitoring porosity is vital for fluvial geomorphology assessment as well as in river ecosystem management. Conventional porosity prediction methods are restricting in terms of the number of considered factors and are also time-consuming. We present a framew...
作者:M. A. Eltaher , N. Fouda , Tawfik El-midany ...
来源:[J].Journal of the Brazilian Society of Mechanical Sciences and Engineering(IF 0.234), 2018, Vol.40 (3), pp.1-10Springer
摘要:... We implement a modified porosity model that represents porosity and Young’s modulus in an implicit form, where the density is assumed as a function of the porosity parameter, while Young’s modulus is assumed as a ratio of the mass density with porosity to that without porosity...
作者:Miao-Xia Xie , Yan-Xin Li , Xiang-Tao Shang ...
来源:[J].Materials(IF 2.247), 2019, Vol.12 (9)DOAJ
摘要:Porosity defects are still a challenging issue in the fusion welding of molybdenum and its alloys due to the pre-existing interior defects associated with the powder metallurgy process. Fiber laser welding of end plug and cladding tube made of nanostructured high-strength molybde...
作者:Manuel J. Chinchillas-Chinchillas , Carlos A. Rosas-Casarez , Susana P. Arredondo-Rea ...
来源:[J].Materials(IF 2.247), 2019, Vol.12 (13)DOAJ
摘要:... Therefore, it is important to evaluate the porosity in the interfacial transition zones. The porosity of the cement paste, the aggregate and the interfacial transitional zones (ITZ) of a PC with recycled coarse aggregates (RCA) and silica fume (SF) is measured by means o...
作者:Trishikhi Raychoudhury , Vikranth Kumar Surasani
来源:[J].Journal of Earth System Science(IF 0.695), 2017, Vol.126 (4)Springer
摘要:... To achieve the objectives, a one-dimensional transport model is developed by considering particle deposition, detachment, and straining mechanisms along with the effect of changes in porosity resulting from retention of NZVI particles. Two different flow conditions are c...

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