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Online since: October 2010
Authors: Chang Hong Liu, Yan Yan Li, Wen He, Jia Yuan Ding, Yun Long Ai
Compared with cold pressing, the comprehensive properties of warm pressing are better.
The preparation of green bodies play a key and basic role among the factors of microwave sintering, because the sintering process bases on the material's interaction with microwaves, it is thought that the heating state of the sample can be affected by the different compaction methods.
As shown in Fig.3 (b), the warm pressing sample is better, and has higher mechanical properties.
As we all know, grains’ refining strengthening is beneficial to mechanical properties.
Fig.4 XRD patterns of MoSi2 compacted by cold pressing and warm pressing Mechanical properties of the composite ceramics at room temperature.
Online since: January 2022
Authors: Jeremiah C. Millare, Stephen Chris J. Querijero, Aiela Paula L. Melgar, Maria Charisma Anne M. Suba, Mary Madelaine G. Lagman, Katrina R. Bucud
The additives essentially promoted chemical interaction hence affecting the morphology of the composite membranes.
Due to its nano-properties, nanomaterials have considerable differences from its macroscale counterparts regarding its mechanical, electrical, and magnetic properties, as well as its adsorption and high reactivity.
Pure CA was used as the control to study how O-MMT affects the properties of the CA/O-MMT membranes.
Van Haute in: The Influence of Mineral Fillers on the Membrane Properties of High Flux Asymmetric Cellulose Acetate Reverse Osmosis Membranes, Desalination, 18, pp. 203-214 (1976) [12] Y.
Goncalves in: Morphology and Mechanical Properties of Nanocomposites of Cellulose Acetate and Organic Montmorillonite Prepared with Different Plasticizers, Wiley Online Library (2011, December 6) [16] F.S.
Online since: February 2013
Authors: De Ren Kong, Li Ping Li, Fang Wang, Li Xia Yang, Chuan Rong Zhao
At the same time assess the accuracy of the pressure measuring, requites the relative errors between vice standard and standard crusher gauge is better than that between the testing-level and standard crusher gauge, also it requires the relative errors between the testing-level and standard crusher gauge is better than the relative errors between the working-level and standard crusher gauge[4]. 2 Analysis of Factors Influencing the Measuring Uncertainty of Standard Internal Crusher Gauge The factors that affect the measuring uncertainty of standard internal crusher gauge can mainly be divided into three categories: inconsistency of pressure’s true value from pressure source, the uncertainty imported by standard copper-cylinder and the random fluctuations of the individual character of crusher gauge. 2.1 The measuring uncertainty by the pressure source of pressure true value inconsistency The factors affect the true value of pressure’s inconsistencies include the dispersion of the pressure
values provided by the pressure environment simulators or standard gun under the conditions of the "standard" charge structure as well as heterogeneity of the same end face. 2.2 The measuring uncertainty introduced by standard copper-cylinder The factors that cause the measuring uncertainty by standard copper-cylinder can mainly be divided into five categories: the factors that affect pressure measuring uncertainty of standard copper-cylinder can be divided into as following categories: firstly, primary pressure standard; secondly, height measuring of copper-cylinder; thirdly, inconsistent individual deformation of standard copper-cylinder; fourthly, inconsistent pressure sensitivity; fifthly, the influence of temperature . 2.3 The measuring uncertainty introduced by the random fluctuations of the individual character of crusher gauge The random fluctuations of the individual character of crusher gauge are important factors that describe repeatability of the standard crusher gauge.
The facts than affect measuring uncertainty for crusher gauge are complex, including: (1) Uncertainty component introduced by overall mechanical properties of crusher gauge, Including: piston rod, processing geometry of cylinder, matching performance between piston rod and cylinder, and hardness of them; (2) The influence of pressure oil.
(2)The factors that affect the uncertainty of height measuring uncertainty of copper-cylinder are: the accuracy or the measuring uncertainty of height measuring, measuring uncertainty of the operators, measuring uncertainty introduced by the unevenness on two end face of copper-cylinder, Influence of the time of height measuring, donates:
According to selection method of standard internal crusher gauge, in-depth analysis the factors that affect the measuring uncertainty of standard internal crusher gauge which can mainly be divided into three categories: inconsistency of pressure’s true value from pressure source, the uncertainty imported by standard copper-cylinder and the random fluctuations of the individual character of pressure measuring gauge.
Online since: August 2013
Authors: M. Ignacio Guerra Romero, Julia M. Morán del Pozo, Andrés Juan Valdés, Julia García González, Desirée Rodríguez Robles
One example of this is water absorption, which in recycled aggregates reaches such high values that the amount of free water calculated for mixing the concrete is affected, consequently impacting on the concrete's properties, especially consistency.
One of the factors to consider when substituting natural aggregates with recycled aggregates in concrete mixes is that the latter are highly porous and therefore have a greater capacity for water absorption.
In the IW series, slump presented a rising trend even from the lowest replacement rate, which was mainly due to two factors.
Even without stirring, immersion of recycled aggregates for 10 minutes causes some of the adhered mortar to be washed away, affecting the aggregate's subsequent water absorption capacity.
Tests for mechanical and physical properties of aggregates - Part 6: Determination of particle density and water absorption
Online since: May 2011
Authors: Li Yang, Na Zhang
The phase ratio determines the mechanical properties and corrosion resistance of duplex stainless steel joint.
The chemical composition and mechanical properties of the materials are shown in Tab1 and Tab2.
Results of Mechanical Properties Test.
This shows that to A240-S32205, GTAW joint has better mechanical properties than SMAW joint with acid electrode.
Conclusions (1) Compared to SMAW with acid electrode, GTAW can obtain better mechanical properties in joint
Online since: November 2014
Authors: Farid Nasir Ani, M.M. Zamberi, S.N.H. Hassan
The properties of the biodiesel such as viscosity, acid value, sulfur content and heating value are varying with type of feedstock [2].
Catalyst concentration is one of the major factors that can affected on the transesterification process and cost of production.
All the biodiesel properties were found within the biodiesel standard limits.
[2] J.M.Marchetti, A summary of the available technologies for biodiesel production based on a comparison of different feedstock’s properties.
Rodriguez, Biodiesel from used frying oil, Variables affecting the yields and characteristics of the biodiesel.
Online since: June 2014
Authors: Axel von Hehl, Barbara Striewe, Norbert Grittner, Florian Nürnberger, Mirko Schaper
The mechanical properties were determined by tensile tests.
Due to the differing material properties the compound production process has to meet demanding requirements.
Additionally, the mechanical properties of the compounds were determined.
North: Influence of silicon in aluminium on the mechanical properties of titanium/aluminium friction joints.
Aki: Mechanical properties of titanium-5083 aluminium alloy friction joints.
Online since: February 2011
Authors: Yan Jie Li, Bing Du, Nan Wei Li, Jie Liang, Gong Ming Yang
A B Fig.1 Bacterial biofilms in hole on food-contact surface(A×3000,B×3500) Factors effects biofilms formation in food industry It found that the microbial attachment and biofilm formation on surfaces of food equipments affected by a lot of factors, such as the chemical and physical properties of the cell and substratum surfaces and the composition of the surrounding medium.
The ability of bacteria to colonize materials is influenced by environmental factors such as temperature and medium composition, which affect the physiological characteristics of bacteria.
Altering the physicochemical properties of a cell will probably affect its adherence properties.
Cleaning may alter the surface charge and the physicochemical properties of the surface and subsequently affect bacterial adhesion(BoulangePetermann, 1996).
(2) Choose the proper equipment and materials Material reasonable or not directly affects the mechanical properties and the production of the products.
Online since: January 2006
Authors: Zong Xia Jiao, Xiao Dong Wang, Guo Ping Huang
A CAD/CAM idea with its relation model including the analyses of braid process, yarns internal geometry and mechanical properties is proposed.
Mechanical properties were analyzed by various approaches according to the braiding situations [4].
In order to analyze the mechanical properties of a part, a macroscopic shape of it must be established.
The properties includes the mechanical, thermo, fatigue, energy absorption ones, etc.
Here, finite element method is adopted to analysis the macro properties of braided composite[6].
Online since: February 2011
Authors: Mei Lin Zhang, Ming Wei Zhao
It is known that the surface structure has significant influence on the microstructure and properties of the final coating such as adhesion [5-7].
It was stated that grit blasting generated sufficient roughness, which ensured mechanical anchoring between coating and substrate.
By varying the grit blasting pressure, the adhesive properties of WC-Co coatings are positively affected by roughness variations.
Furthermore, the surface roughness and thermal conductivity greatly affected the structure and properties of coating [12].
These factors can be used to affect heat affected area of the grit blasted specimen was larger than that of the electrospark one.
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