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Online since: January 2013
Authors: Jing Jie Zhang, Chong Hai Xu, Hui Fa Zhang
In addition to compositions content, the hot pressing process parameters are the factors that affect the mechanical properties and the microstructure of ceramic materials.
And the materials is prepared and mechanical properties are tested in order to validate the combination algorithm.
According to above mentioned technology, the materials are prepared and the mechanical properties are tested.
And the output was the main mechanical properties including hardness, flexural strength and fracture toughness.
With the hot pressing parameters working as input parameters, and mechanical property as an output parameter, the optimum mechanical properties can be obtained.
Online since: December 2012
Authors: Shi Wei Su, An Chen, Hong Qiang Yang
Factors affecting the promotion of wood saving and substitution technologies in the packaging of electromechanical products With the development of green economy, the promulgation of energy saving and emission reduction policy, and the enhancement of sense of social responsibility of enterprises, China has made proactive exploration in the field of wood saving and substitution in the packaging of electromechanical products.
Focus on the research on mechanical properties of different wood substitution materials, structure of packaging products, and mechanical properties of structural members, connectors, and structural connectors so as to provide scientific and theoretical basis for the design and structural optimization of packaging products, and based on the research, propose normative and strict dimension definition for different weight bearing structural materials, and formulate related standards, including: (1)Research on mechanical properties of packaging materials (physical and mechanical property indexes of biomass materials, constructive relationships of materials, and material grades) (2)Safety grade of large packaging boxes (importance classification and reliability design of packaging boxes) (3)Normalization and standardization of packaging box load (static load, action of driving forces in various carrying conditions, temperature stress, working load, and so on) (4)Structural analysis methods
Furthermore, due to uneven rotary cutting thickness of veneers, uncontrollable factors impose greater influence upon the production process specifications.
Laminated veneer lumbers for packaging electromechanical products are structural laminated veneer lumbers and shall have perfect water resistance, weatherability and mechanical properties.
Manufacture and mechanical Properties of binderless boards from kenaf core.
Online since: August 2019
Authors: Azamat A. Zhansitov, S.Yu. Khashirova, Azamat L. Slonov, Azamat A. Khashirov, Ismel V. Musov, L.K. Kuchmenova
Moreover, their introduction improves the elastic-strength properties of carbon fibres-filled PEI.
When processing by injection molding, this leads to underfilling and defectiveness of products, and during processing by 3D printing (FDM) – to poor adhesion of the threads in the sample and, consequently, to low physical and mechanical properties [3].
PEI is one of the representatives of superstructure polymers with high thermal and mechanical properties [7].
It should be noted that various random factors can influence the temperature of loss of 2 % of mass, and they are not always regular, as opposed to temperature loss of 5 and 10 % of mass, which are more correct indicators of destruction.
Thus, we can conclude that the use of OPSU as a plasticizer allows us to obtain a composite with the most thermostable melt and high mechanical properties.
Online since: February 2004
Authors: J.M. Park, Hae Do Jeong
To investigate this, chemicals with different concentration are prepared and after a leaching procedure, the mechanical properties of the reacted surface were tested through a method of scratching, indentation and friction test.
For the measurement of both the mechanical property and machinability, the indentation and scratching test, as well as the friction test, were performed by Nano-indenter XPTM by MTS Co.
(1) Table 1 Conditions of chemical solution Parameters Conditions Chemical solution KOH Concentration (wt%) 0, 5, 10, 20 Buffer chemical Acetic acid Dipping time (min) 10 Temperature Room temperature Fig. 2 Geometry of Berkovich diamond tip Discussion The mechanical properties such as hardness, elastic modulus, scratching property and friction coefficient were tested to verify the characteristics of reacted surface.
Through the measurement of the hardness change, indentation test, friction coefficient, and scratch test, it is certain that the chemical solution affects the change of the surface property.
The penetration depth is a very important factor for the selection of the machining parameter.
Online since: August 2022
Authors: Sameh Hamed Ismail, Ahmed Roshdy Elsakhry, Mohamed Kamal Khalaf, Mostafa Abdel-Hamied, Gehad Genidy Mohamed
Moreover, most of the physical, chemical and biological deterioration factors lead to alteration in the physiochemical and mechanical properties of limestone and became fragile and weak [4].
Additionally, this process improves the properties of the damaged stones and gives them high stability to the surrounding environmental factors [2, 8, 9].
Measurement of physical properties 3.2.1.1.
Measurement of mechanical properties (Compressive strength test) Mechanical property measurements were critical in evaluating the materials utilized in the consolidation process [15, 21].
Ismail, Preference of using nano silica\magnetite core-shell on enhancement mechanical and morphological properties of cement mortar.
Online since: January 2013
Authors: Yu Tao Feng, Hai Bo Yang, Shu Guang Sang
Furthermore, quality supervision departments tend to concentrate on furniture amount of strength, stability, formaldehyde, heavy metals, soft and hard covering areas such as physical and chemical properties of the surface when they inspect office space and office furniture.
All the factors above mentioned are all related to users’ physiological and psychological experience and affect their health and safety as well as the product evaluation and purchase.
In addition, it has a good moisturizing quality, steady elasticity, great survivability and no expansion and contraction. 2.4 Material Factors Affecting the Performance of Office Chairs.
The sultry phenomenon caused by adpressed parts of the body with seat is a factor to affect comfort level.
From the related parameters, wool fabrics not only has good moisture absorption properties and heat insulation but also moisture disappears quickly.
Online since: July 2017
Authors: Rudolf Kawalla, Grzegorz Korpala, Alexander Kabanov, Sergey Ionov
Steels with bainitic microstructures and retained austenite can own these properties.
The chemical composition and the technology have an impact on the development of these processes, which in turn greatly change the microstructure and the mechanical properties.
After deformation, the main factor, which affects the microstructure and mechanical properties, is the accelerated cooling rate during the phase transformation.
Simulation of hot rolling The experimental simulation of the rough rolling, finish rolling with subsequent thermo-mechanical treatment were realized on the Gleeble HDS-V40 thermo-mechanical simulator by means of the plane strain compression test.
The effect of the finish temperature of the accelerated cooling on the microstructure and mechanical properties has been already studied and reported in [8–10].
Online since: September 2011
Authors: Tuan Dat Vu, Da Wei Dong, Bing Yan, Chun Rong Hua, Qi Yang Tu
Solid tetrahedral element is used to mesh with material properties of QT450-10 [2].
In operating, the dynamic load sources are not only from road roughness but also from the flowing of hydraulic oil in system [9], therefore MSC.Adams/Hydraulic module is used to describe environment of hydraulic system with parameters of hydraulic cylinder, oil operational pressure and properties.
The fatigue properties of material QT450-10 is used to create S-N curve of material.
Therefore, getting over blocks will affect fatigue life greatly.
Fang and Editorial Member: Mechanical Engineering Material Features Data Manual (Mechanical Industrial Publications, China 1994), p.753 (in Chinese)
Online since: December 2011
Authors: Fang Wang, Gang Chang Ji, Jie Guang Song, Da Ming Du, Yang Liang Li
For most of these applications, the porous materials need to fulfill specific requirements regarding their microstructure, porosity, permeability and mechanical properties. [7].
To tailor the properties for each application it is necessary to control the factors affecting the sintering process such as the initial particle characteristics, the microstructure, the additives and the processing technique [8].
In this paper, unfired porous quartz bricks were fabricated using river sand from the Yangtze River in China, the influence of fabricated technology on properties of unfired quartz porous bricks were investigated.
The effect of foaming agent content on the properties of unfired porous quartz brick is shown in Fig.3, which indicates the density of unfired birck shows the highest value as the foaming agent content for 0.5%.
Fig.2 Effect of quartz sand content on the properties of unfired porous quartz brick Fig.3 Effect of foaming agent content on the properties of unfired porous quartz brick The effect of ratio of materials and water on the properties of unfired porous quartz brick is shown in Fig.4, which indicates the density of unfired brick is least value as the ratio of materials and water for 1:1.1.
Online since: January 2014
Authors: Jun Li, Yu Hua Fan, Bin Xiao
Geological hazards along the highway with Disaster in the rate, the complexity of the causes of the disaster , affecting a wide range, breaking strength and other characteristics of road transport caused great adversely affected.
Using aqueducts , tunnels, over water, roads, culverts, bridges and other measures across landslides.When using the bridge across the debris flow -prone areas need to focus on issues to consider erosion and siltation problems.When the bridge aperture determines not only the flow of factors to consider , but also need to consider the array of flow characteristics , and headroom allows the aperture to ensure unimpeded by mudslides .Bridge sites need to choose a stable and river straight in bed at , try and riverbed vertical slope must not be set at the point of the bridge riverbed .Secondly, the platoon guide .
Landslide disaster prevention.Improve the nature of the sliding surface debris, mechanical balance and drainage is a common highway landslide disaster prevention measures .In the actual control, the need for a reasonable choice of appropriate control measures in accordance with the nature of the landslide , causes and laws and so on.First, to improve the properties of the sliding surface debris .
Electro-osmosis method is based on the principle of electro-osmosis , the DC pass into the saturated soil , sparse dry soil , enhance soil strength ;Grouting method is to inject chemical pulp or cement mortar in the vicinity of the rock band slide through cementation , coagulation improved shear strength of soils and rocks .Secondly, the mechanical balance method.
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