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Online since: March 2015
Authors: Izabela Cristina Stancu, Daniela G. Petre, Horia Emil Cioflan, Andrada Serafim, Adriana Lungu
However, the use of gelatin is often limited by its solubility in aqueous environments, poor mechanical and thermal properties.
(3) Mechanical properties.
Fig. 4: Equilibrium water content for the synthesized hybrid materials Mechanical properties.
The influence of two composition-based factors: (1) T% and (2) GelMA:PVP ratio on the elasticity of the materials was investigated.
They describe an interesting dependency of the mechanical properties with the composition.
Online since: February 2011
Authors: Yi Min Li, Guang Yao Wang, Hao He
Among the parameters, temperature was the most significant in affecting the interface morphology, followed by delay time, while injection velocity seemed to play no significant role.
The results were analyzed by taking account of rheological properties of the two feedstocks.
It was demonstrated the differences in the rheological properties of the metal feedstocks involved are key factors in determining the interface morphology of the molded parts.
The technological importance of the ability stems from its effect on various properties, and in particular on the mechanical behavior [6].
A good understanding of how and to what extent a molding parameter affects the interface morphology as well as its rheological reason is a prerequisite for controlling the morphology and properties of co-MIM parts.
Online since: June 2011
Authors: Norhamidi Muhamad, Khairur Rijal Jamaludin, Mohd Nizam Ab. Rahman, Sufizar Ahmad, Mohd Halim Irwan Ibrahim, Nor Hafiez Mohamad Nor
Sintering is a key step in the metal injection moulding (MIM) process, which affects the mechanical properties of the sintered part.
The mechanical property of the sintered compact is resulted from tremendous sintered part densification.
The process combines the design freedom of plastic injection moulding with material properties near that of wrought metals.
Table 1 Factor level (variables) in the experiment Factor Level 0 1 2 A Sintering Temperature (°C) 1340 1360 1380 B Dwell time (minute) 60 120 240 C Heating rate (°C/min) 6 8 10 D Cooling rate (°C/min) 6 8 10 Design of experiment (DOE) There are many sintering parameters that have some effect on the properties of the sintered part.
The most influential factor for the best flexure strength, a cooling rate, was found to have a linear reduction of flexure strength when the cooling rate is increases to the higher factor level.
Online since: April 2011
Authors: Li Na Wang, Yan Wei Wang, Chang Zheng Xin, Xiang An Huang
Optical microscope and Electron microscopy were employed to evaluate the properties and morphology of the materials.
The influence factors on polymerization were discussed.
Microencapsulated phase change materials (MPCMs) not only have the ability of phase change from solid-liquid to presolid-solid in the meantime avoiding the influence of outside moisture, oxygen and other factors, but also can improve the stability of phase change materials.
In this paper po1yoxyethylene octylphenol ether (OP-10) was the emulsifier, which was easily resolved in water and formed stable emulsion because the coverage area αs is 0.60 nm2 [6]. ②Emulsifying temperature Emulsifying temperature in the emulsifying step was one of the important factors affecting the result of emulsifying and also decided by melt-point of core.
The results can be obtained as following: 1) The emulsifier is one of the important factor affecting morphology of MPCMs, so the proper concentration of the OP is 1%. 2) The ammonia chloride reacted with methanol, which lead the PH decreased, the uniformity microcapsules can be obtained at 70℃. 3) The acidification time affects the ability of forming capsules, so the better is 60 minutes.
Online since: October 2011
Authors: Jin Liang Hu, Jun Lou, Hong Chan Sheng, Guo Xing Chen, Ke Feng Huang, Ze Kun Liu, Yi Ling Shi, Song Yin, Lin Ye, Shu Hui Wu
The influence of processing parameters on residual stresses, microstructure and properties are discussed.
Introduction Most failures of materials originate from their surface and are sensitive to their microstructure and properties.
Special attention is paid to residual compressive stresses, microstructure and properties after LSP[2-4].
Experiments with aluminum alloys showed that the hardness properties of the non-heat treatable (5086-H32) and over-aged (2024-T3, 7075-T73) alloys were significantly improved as compared with the un-shocked properties [10].
But the systematic research on properties of LSP treated metal and alloys in crucible environment, which involves more influencing factors, therefore extremely difficult to gain total understanding, also needs more efforts.
Online since: September 2013
Authors: Liang Chen, Zhen Li, Lei Liu, Zai Qin Wang, Hui Li, Shan Feng Wang
In the paper, organic lotion and flaky zinc are used to upgrade the properties through modifying their filler and film.
Owing to the poor mechanical properties of water-borne inorganic zinc-rich coatings, in practical applications, the composite material composed of silicate solution and organic lotions can remedy the defects on mechanical properties and improve the corrosion resistance and durability.
Result and conclusion Physical properties.
In theory, in order to ensure the electrochemical properties of the coatings, it was necessary to add enough zinc powder [10].
Xiong, Preparation and Properties of Inorganic Flake Zinc-rich Coatings[J] Journal of Beijing University of Chemical Technology, 2007,S2
Online since: May 2015
Authors: Xiao Gang Liu, Yong Chen, Ming Xiang Chen, Ke Cheng Li
Introduction Due to high surface area and low density, nanoporous metals (NPMs) show some novel properties, such as high chemical activity and robust mechanical strength, which have attracted more and more attention as a kind of brand new functional materials.
In fact, such assumptions were firmly demonstrated by the investigation on the mechanical properties of thin films, which was proposed by W.D.
In addition, it was concluded that annealing temperature was the most dominant factor affecting the microstructures of NPC using the range analysis method, on which was our emphasis placed.
Wong, Size-dependent melting properties of tin nanoparticles, Chem.
Nix, Mechanical properties of thin films, Mater.
Online since: May 2007
Authors: Zhen Liu, Yan Qiu Liu, Z.Y. Suo, Y.L. Ren, Ke Qiang Qiu
The mechanical properties were measured in compressive and tensile deformation modes.
Introduction Combing the advantages of both the matrix and the reinforcement, metal matrix composites (MMCs) can exhibit many excellent properties, such as high specific stiffness and specific strength, good dimensional stability, high damping capacity, and good elevated temperature creep properties [1-6].
The results on SiC which is usually used as the reinforcement in the pure magnesium and commercial-grade magnesium alloys, however, show limited success in improving the overall mechanical properties, especially the strength [1-5].
The combination of nickel foam with AZ91 magnesium alloy will be expected to have good damping capacity and mechanical properties.
The mechanical properties were measured in compressive and tensile deformation modes.
Online since: March 2018
Authors: Feng Qiang Nan, Chun Jiu Zhu, Jun Hui Lu, Wan Wu Shen
The rheological properties of propellant are several key factors in the process design, which affect the quality of propellant processing that determines the weapon's performance.
Weapon performance and energy release efficiency are affected by molding size, mechanical properties and molding quality of propellant.
Rheological parameters affect the rheological properties and the quality of formed propellant during the forming process.
Effect of NGu content on the rheological properties of the dough.
Figure 3 lnη – lnγ curve of different NGu content at 30 ℃ Effect of solvent ratio on the rheological properties of the dough.
Online since: October 2013
Authors: Yong Mei
The study shows: (1) the relative permeability can directly characterize the level of rock (coal) affected by mining; (2) in the vertical direction, the roof and floor have a wide range of relief, permeability increases and then decreases exponentially, affecting the range 30 ~ 40m; (3) overburden above the mined-out area damaged as an "O"-ring; (4) immediate roof obvious with a relief range of about 45 ~ 60m.
Introduction Coal seam permeability is affected by many factors, such as geological structure, stress state, seam depth, coal structure, coal quality characteristics, etc., and the combined effects is very complex [1], especially for surrounding rock in the mining process.
Physical and mechanical parameters of the strata are shown in Table 1.
Stress concentration factor close to 1.4, the peak stress occurs at a distance of approximately 10m to the coal face, and the range affected is about 30 ~ 40m.
Multiphase medium coal rocks (coal reservoirs) properties of physical simulation and numerical simulation [D].
Showing 4451 to 4460 of 25890 items