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Online since: October 2020
Authors: Zheng Yi Jiang, Hai Bo Xie, Mahadi Hasam, Hamidreza Kamali, Fang Hui Jia
The optimal bonding parameters were attained and the obtained mechanical properties and bonding strength of the composite were analysed.
Thus, the effect of changing temperature is found to be the most important factor as this caused the porosity to reduce considerably, resulting in an increase in density and mechanical properties.
The mechanical properties of the composite were analysed by density, porosity and microhardness.
The influences of temperature, time and pressure were analysed on the mechanical properties of the sintered carbides and bonding shear strength.
It is found that the increase of the sintering parameters improves the mechanical properties and bonding shear strength.
Online since: September 2013
Authors: Jian Wu Lan, Jiao Jiao Shang, Ming Lei, Shao Jian Lin, Xia Huang, Wen He
The thermal properties and solubility of the novel CPIs were investigated.
The thermal properties of CPI-4 were evaluated by DSC and TGA.
The data of thermal properties of all polymers were summarized in Table 2.
Therefore, all of the CPIs showed appropriate thermal properties.
Synthesis and properties.
Online since: November 2012
Authors: Qi Wang, Qing Ming Wang
Since the soft tissue pad is viscoelastic and its mechanical properties depend on many aspects, certain parts of the combined complex structure are anisotropic, the biomechanical properties are also influenced by loading speed, loading frequency and lasting time[1].
Besides, the relationship between impact forces and insole properties has not been accurately described under a unified system.
As methods such as MRI can’t take both deformation and pressure as key factors together to describe DTCI.
Soft tissue behavior can be described by a combination of elastic and viscoelastic properties.
All these properties of DTCI may provide a better condition for design of certain sport shoes.
Online since: November 2012
Authors: Ji Wei Deng, Chang Wu Liu, Ze Hui Chen
Introduction As the product of deriving of geological activity of the crust, rock mass widely exists in nature, it also be widely used as various construction foundation, surronding rock or building materials in the field of engineering construction, so its mechanical characteristics and performance is always the focus of research. rock or rock material are the rock sample which get shredded from natural rock mass, owing to Incomplete development and effect of crustal stress in process of diagenetic, there always form natural defects such as Subtle fractures, holes and plane of weakness in rock texture, so to affecting the physico-mechanical properties of rock.
Table 1 Different dimensions da-qing limestone rock sample mechanical parameters Rock number D[mm] L[mm] L/D [MPa] [10-3] E[GPa] T05 87.36 62.48 0.715 31.08 1.71 20.1 T12 90.11 86.86 0.964 28.06 5.63 5.1 T08 120.13 62.74 0.522 32.48 6.17 19.1 T09 120.15 62.85 0.523 29.28 3.17 9.7 T11 134.75 86 0.638 28.31 1.3 22.3 According to the test result, drawing a scatter diagram about relation between compressive strength and size, As shown in Figure 1.
China University of Mining and Technology associate professor Sheng-Qi Yang based on two equations, put forward a theory model of size effect of rock material [10]: (3) In the equation: is the mechanical parameters of any draw ratio under uniaxial compression, is the mechanical parameters of standard rock samples(this article takes the average values of all specimens), L/D is the draw ratio of rock sample, parameter a represents the sensitivity that rock mechanical parameters to size, parameter b represents correlation between rock material and size, parameter a and b are all material parameters, can be got by least-square method in regression analysis.
Due to the limited conditions, this test uses the specimen are all less than 1, so the end of rock specimen friction is the key factor that different size of rock owns different compression strength.
Standardized test for determining the physical properties of mine rock [M].U.S.
Online since: December 2012
Authors: Li Jun Luan, Mu Jia Ma, Jian Feng Qi, Xin Yue Gu, Li Ze Yao
Therefore, characteristics which will not affect the results of the analysis, such as filleted corners are often ignored. 
Fig.4 3D structural entity unit of SOLID185 3)Definition of material properties: the material of the base frame was pre-selected as 16Mn, basic parameters of 16Mn were shown in Table 1.
Tab. 1 Chemical composition and Mechanical properties of 16Mn steel The name of a shop Chemical composition % Mechanical properties 16Mn C Si Mn P S Yield strength MPa tensile strength MPa Stretch length % 0.12~0.2 0.2~0.55 1.2~1.6 ≤0.045 ≤0.045 ≥345 ≥510~660 ≥22 4)The free mesh generation with meshing accuracy of "4" was adopted, as shown in Diagram 4, a total of 10541 nodes and 35072 units were generated.
Usually, the safety factor of the base was taken as (n)=1.1, thus , therefore, in the operating process, the base frame can ensure the working resistance of the bearing roof, which meets the design requirements. 2 Conclusion Based on the above analysis on base frame, the following conclusions can be drawn.Stress concentration occurred mainly in the column nest and surrounding areas, where the stress often reached its maximum, therefore, the intensity of the column nest should be fully considered in the design.Through this analysis, we can know that the use of finite element analysis software ANSYS can well simulate the operating stress state of the equipment, and that by fully utilizing the analysis software, we can make an accurate assessment of the design scheme.
Conventional mechanical analysis of Key components of the auxiliary supporting equipment of the self-propelled road header based [J].
Online since: May 2011
Authors: Hua Qing Wang, Jie Cheng, Zheng Ping Fang, Hong Qiang Yan
The glass fiber reinforced composites for this blends are made and their properties are studied.
By altering the relative amounts of each polymer in the IPNs, the individual polymer properties may be changed, in which the lower Tg component is shifted to a higher temperature, while the higher Tg component is shifted to a lower temperature.13 This characteristic structure of IPNs may result in synergistic effect on properties, which is expected to combine good properties of different polymers.14 The object of this study is to provide a novel IPNs BT resin containing a naphthalene structure and analyze their laminate properties.
The ridges between interlaced network are been increased due to being a few of co-polymerizations between BMPN and DNCY, which implying enhanced propensity for brittle failure in tune with the results on mechanical properties.
Properties analysis of glass fibre reinforced composites for the novel IPNs BT resin containing naphthalene structure Flexural property The flexural property of bismaleimide resins is not good in the limit to their application.10 To enhance flexural property, the ether linkage is introduced into the structure of novel BT resin.
M., High Performance Thermoset, Chemistry, Properties, Application, Hanser, 1993
Online since: December 2022
Authors: Mohd Aizuddin Shahmi A'zim, Raja Nazrul Hakim, Mohd Amin Indok Nurul Hasyimah, F.W. Shaarani, Z.A. Mohd Yusof, A.N.D.Mohd Said
The processing conditions (such as reaction temperature and time) have a significant impact on the catalyst's properties.
Catalyst Characterization (BET) In heterogeneous catalysts, specific area and pore volume are significant factors to consider especially for the supported catalyst.
Wasmi, “Determination of zinc glutarate complexes synthesis factors affecting production of propylene carbonate from carbon dioxide and propylene oxide,” Chem.
Ang et al., “Determination of zinc glutarate complexes synthesis factors affecting production of propylene carbonate from carbon dioxide and propylene oxide,” Chem.
Kim et al., “NEXAFS spectroscopy study of the surface properties of zinc glutarate and its reactivity with carbon dioxide and propylene oxide,” J.
Online since: August 2015
Authors: Tomasz Muszyński, Arkadiusz Rubiec, Adam Bartnicki
By analysing the subject literature [7, 9], it can be shown that the nominal volume of hydraulic accumulators is the main factor that affects the efficiency and effectiveness of suspension system operation.
With today’s advancement of computers, model discretisation for complex structures of mechanical systems presents no problem.
For the assessment of how hydraulic accumulators affect UGV suspension characteristics, a simulation model (Fig. 1) has been created which essentially consists of two sub-models: – A model of mechanical elements (full vehicle model), and – A model of the system of hydropneumatic components.
Block diagram of the UGV model The full vehicle model refers to kinematic (rotary and linear) joints that connect the model’s individual elements and mass properties, whereas the model of hydropneumatic components relates to properties and features of the suspension hydraulic system.
The member connecting the hydraulic system model and the mechanical model is a hydraulic cylinder.
Online since: March 2016
Authors: Hong Xi Zhu, Wen Jie Yuan, Cheng Ji Deng, Bi Hui Kuang, Qing You Zhu
For the urgent requirements of high performance castables in iron and steel making industry, effects of rare earth chlorides on properties of Al2O3-MgO castables were addressed.
In order to achieve enhanced properties including volumetric stability and mechanical strength, various mineralizers were used as additives such as fluorides, chlorides, magnesium borate and oxides (B2O3, TiO2 and SnO2) [4-6].
This work addresses effects of different rare earth chlorides on properties of Al2O3-MgO castables by means of phase compositions, apparent porosity, bulk density, permanent linear change and bending strength.
Different cations could be incorporated into spinel, which was affected by several factors including temperature, pressure and composition [10].
Zhu, Effects of SnO2 addition on the properties of alumina-magnesia refractory castables, N.
Online since: August 2015
Authors: Pornpen Siridamrong, Somporn Swasdison, Niyom Thamrongananskul
The filaments are SF having good mechanical properties.
The morphology and physical properties of the SF: G: C blended fiber mats were investigated. 2.
The next studies will be improving the mechanical property for using in the resorbable barrier membrane.
Ma, Phase separation, pore structure, and properties of nanofibrous gelatin scaffolds, Biomaterials, 30 (2009) 4094-4103
Haghighat Kish, Structural characterization and mechanical properties of electrospun silk fibroin nanofiber mats, Polym.
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