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Online since: September 2007
Authors: Young Sam Ham, Jai Sung Hong, Kyong Yop Rhee, M.H. Kim
This seems to occur because real contact area between specimen and mating ball was affected by the specimen hardness.
Introduction It is well-known that wear is a phenomenon affected by surface properties and can be repressed according to the hardening of a surface [1].
One of the advantages using the induction-hardening method is in that it can harden just a part of a surface without affecting the inside of the material.
Then, the ball-on-disk wear test was performed to determine the changes in the wear properties of SPS5 steel according to the induction-hardening treatment.
That is, the actual surface of contact, which is a factor that greatly affects wear properties, cannot be increased over a certain level and thus the coefficient of friction decreases.
Online since: August 2013
Authors: Shu Zhen Li, Bo Lin He, Min Hua Jiang
The technological characteristics and influence factors of CS welding.
Two methods mentioned above are compared, it is concluded that the latter may obtain good mechanical properties of welding joint.
Because of very fast speed of CS welding, it is not difficulty to obtain uniform microstructure and high mechanical properties of CS welding joint.
There are great differences in the physical and chemical properties of the base material, it has great trouble in the actual welding.
The present research mainly focused on the effect of welding parameters on the properties of the joint.
Online since: December 2007
Authors: Yung Kang Shen, Jeou Long Lee, Fwu Hsing Liu, Keng Liang Ou, Wei Yu Wu, Ya Chan Tu, Yi Lin, Chih Wei Wu
The single parameter method was used to discuss the flatness and replication properties for different processing parameters (mold temperature, melt temperature, packing pressure, packing time and injection pressure).
Lower mold temperature induces better flatness properties.
Figures 4~8 show the flatness properties of lightguiding plate by different processing parameters.
Figure 9 shows the measured points of lightguiding plate for replication properties.
This paper shows that the mold temperature is the most important factor for the lightguiding plate.
Online since: September 2013
Authors: Shao Yin Zhang, Li Jian Liu, Da Zhi Wang, Tong Kuan Xu, Lin Jia, Feng Ding
Thermal properties of PASAs were investigated by TGA.
Thermal properties of wholly Aromatic PASAs were investigated by TGA.
The stoichiometric balance of the two monomers and the temperature are the two crucial factors affecting the molecular weight of the products formed by polycondensation.
Thermal properties.
The thermal properties of PASAs were evaluated by TGA.
Online since: January 2022
Authors: Lin Liu, Jing Chang Wang
Therefore, based on the temperature field distribution and heat transfer characteristics of embedded heat source concrete, the influence of moisture content, temperature, hydration degree and other factors on the thermal conductivity of early concrete is studied.
Influence Factors of Thermal Conductivity Water Content.
The executive standard of the equipment is GB / T10294-2008 Determination of Steady-State Thermal Resistance and Related Properties of Thermal Insulation Materials - Protective Hot Plate Method, in which the steady-state thermal resistance and related physical properties of insulating materials are measured by double test pieces Hot plate device.
(1)The main factors affecting the thermal conductivity are analyzed and studied.
The mechanism of influencing factors on the thermal conductivity is discussed.
Online since: March 2011
Authors: Antoniomaria di Ilio, Francesco Lambiase
To this day, the optimization of product quality in terms of mechanical properties homogeneity has lead to employ numerical techniques to investigate the influence of process parameters on drawing force and mechanical characteristics of produced wire [4] for copper wires.
In order to industrially utilize roll drawing process, it is necessary to forecast the geometrical profile and mechanical properties of wires after a roll drawing pass.
The factors and respective levels are summarized in table 2.
Interaction is present when the response at a factor level depends upon the levels of other factors.
The maximum error affecting the regression model is lower than 0.1 mm therefore proving such relationship can be retained acceptable for industrial purposes.
Online since: August 2022
Authors: Nadia Kamaruddin, M.K.A. Shukri, Rohaya Abdul Malek, Gooven Subramaniam, Siti Hawa Salleh
However, adding up to 20 % results in a steep decrease in the compressive strength due to the densification and space ratio factors in the mortar.
Details of physical properties composition of the RHA used in this study are as shown in Table 1.
Table 1: Physical properties of cement and Perlis rice husk ash.
Combustion temperature and duration are important factors that influence whether silica remains amorphous or becomes crystalline in RHA.
Jeon, “Effect of polymer cement modifiers on mechanical and physical properties of polymer-modified mortar using recycled artificial marble waste fine aggregate,” J.
Online since: March 2014
Authors: Yue Qiu, Jun Yan Dai, Jian Liang Wei
The Influence Factors of Traffic Conditions.
This article chooses the seven factors affecting traffic condition as the attribute variables, including commercial district as the select properties, as shown in Table 2.
In the article, we dig out and analyze the influence factors of the business circle’s traffic condition, and find out the effects of various factors in the business circle, it is helpful for the government department to predict the traffic condition based on the environment factors in the future, so they can respond in a timely manner to the traffic condition.
In the process of the research, there are some deficiencies, such as the influence factors of traffic condition are not comprehensively.
The concept of data mining and technology, Mechanical industry press (2012), Beijing
Online since: July 2011
Authors: Ling Zhang, Jian Xun Ma, Ling Ling Zhang
The environmental factors included dry and wet cycles of saltwater, the coupled action of freeze and thaw cycles and dry and wet cycles.
The single and multi-factor coupling effects of the main marine environmental factors such as saltwater immersion, dry and wet cycles in saltwater, freeze and thaw cycles were also considered.
Tab.1 Material properties of a resin Tensile bonding test Tensile test Compression test Bonding strength / MPa Tensile strength /MPa Elastic Modulus / MPa Ultimate strain / % Compression strength /MPa 3.62 40.6 2080 2.2 81.5 Tab.2 Tensile properties of CFRP sheet (UCP—200g) Cross-sectional area /mm2 Tensile strength / MPa Elastic Modulus / 105MPa Ultimate strain / % 1.665 4430 2.54 1.7 RC column specimens were square-section reinforced concretes with dimensions 100mm×100mm ×400mm.
(4) External environment affected the bearing capacity of columns, and multi-factor coupling effects were more than a single factor effect
But the durability performances of CFRP sheets and concrete were the key factors.
Online since: July 2012
Authors: Shu Zhen Wu, Fang Xu
Introduction The copper has superior strength, thermal conductivity, mechanical properties and corrosion resistance properties, it has a wide range of applications in various fields.
Research Contents Test1 Tab 1 The factors and levels of the orthogonal test 1 factor level 1 2 BTA(A) 2g/l 3g/l sulfosalicylic acid (B) 2g/l 3g/l twelve alkyl sodium sulfate (C) 0.04g/l 0.05g/l RE-salt (D) --- 2g/l By the contrast test filter out a better inhibitor: the BTA: 3g / l + sulfosalicylic acid 3gL + twelve alkyl sodium sulfate 0.05g / L.
Use of L16(215) orthogonal test to study the RE salt has a distinct role in the experimental results, and to consider the interaction between RE and the BTA and sulfosalicylic acid factors.The orthogonal test 1 see Tab1.
Therefore, we can determine the performance influence of RE salt to passive film on copper is great, and showed good synergistic effect with other factors.
Test 2 This test is single factor experiment of six levels, the RE salt as a single factor to consider.
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