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Online since: June 2013
Authors: M.S. Aldlemey, M. Noor. I. Dabo
Improvement of the Adhesive Wear Resistance and Mechanical Properties of Low-Carbon Steel by Solid Carbonization
M.
In order to obtain a variable thickness of the carbonated layer, a carbonization process was performed at different temperatures and times to demonstrate the effect of these two important factors to the amount of diffused carbon to the surface of the solid and thus the extent of its influence to obtain the required properties of the process.
Such mechanical properties and wear resistance can be obtained from the carbonization and quenching processes.
This hardening process includes a wide variety of techniques and is used to improve the mechanical properties and wear resistance of parts without affecting the softer, tough interior of the part.
By this carburization process the mechanical and wear properties of low carbon steel samples increased considerably.
In order to obtain a variable thickness of the carbonated layer, a carbonization process was performed at different temperatures and times to demonstrate the effect of these two important factors to the amount of diffused carbon to the surface of the solid and thus the extent of its influence to obtain the required properties of the process.
Such mechanical properties and wear resistance can be obtained from the carbonization and quenching processes.
This hardening process includes a wide variety of techniques and is used to improve the mechanical properties and wear resistance of parts without affecting the softer, tough interior of the part.
By this carburization process the mechanical and wear properties of low carbon steel samples increased considerably.
Online since: September 2013
Authors: Gui Fan Zhao, Zhen Zhang, Hong Yuan Xiao, Ke Qing
The factors relation to the longitudinal sliding friction coefficient of sedan braking are numerous,and the affects of each factor are complex.This paper selects speed, load,tire pressure,road surface properties,road conditions,through orthogonal experiment,getting the influence degree of each factor.Regarding to the large range of sedan speed,studying the relationship between the friction coefficient and the speed,and getting the influence trend.
Orthogonal experiment According to the above analysis,this paper selects five common factors: speed,load,tire pressure,road surface properties,road conditions,designing orthogonal experiment,choosing Orthogonal table .The various factors and the corresponding level in the test are shown in table 1.The equipment is MBK-01 (III) portable brake performance tester.The equipment is capable of recording the initial braking speed, the mean braking deceleration, braking distance, and other parameters.In accordance with the orthogonal test requirement,experimental procedure shown in Figure 1.
Tab.1 The various factors and the corresponding level Factors Letter Degree Number Speed A 40km/h 1 50km/h 2 60km/h 3 Load B 70km/h 4 80km/h 90km/h Two people Three people Four people Five people 5 6 1 2 3 4 Tire C Normal 1 Overpressure(120%) 2 Road surface properties D Cement 1 Asphalt 2 Road conditions E Dry 1 Wet 2 Fig. 1 Experimental procedure Counting the experimental data,eliminating the error data,the final experimental data is summarized in Table 2 .Using the range analysis method, the influence degree of each factor in the experiment is shown in the table 3.
According to the range analysis,the influence degree of the factors involved in the experiment in descending order is:road conditions,speed, load,road surface properties,tire pressure.This plays an important part in reasonably selecting the relevant parameters to reconstruct the accident according to the scene of the accident.
[6] VeithAG.A Review of Important Factors Affecting Treadwear.Rubber Chemist and Technology, 1992,65(3):601一658 [7] Walters MH.Uneven Wear of Vehicle Tires.Tire Science And Technology,1993,21(4):202一219
Orthogonal experiment According to the above analysis,this paper selects five common factors: speed,load,tire pressure,road surface properties,road conditions,designing orthogonal experiment,choosing Orthogonal table .The various factors and the corresponding level in the test are shown in table 1.The equipment is MBK-01 (III) portable brake performance tester.The equipment is capable of recording the initial braking speed, the mean braking deceleration, braking distance, and other parameters.In accordance with the orthogonal test requirement,experimental procedure shown in Figure 1.
Tab.1 The various factors and the corresponding level Factors Letter Degree Number Speed A 40km/h 1 50km/h 2 60km/h 3 Load B 70km/h 4 80km/h 90km/h Two people Three people Four people Five people 5 6 1 2 3 4 Tire C Normal 1 Overpressure(120%) 2 Road surface properties D Cement 1 Asphalt 2 Road conditions E Dry 1 Wet 2 Fig. 1 Experimental procedure Counting the experimental data,eliminating the error data,the final experimental data is summarized in Table 2 .Using the range analysis method, the influence degree of each factor in the experiment is shown in the table 3.
According to the range analysis,the influence degree of the factors involved in the experiment in descending order is:road conditions,speed, load,road surface properties,tire pressure.This plays an important part in reasonably selecting the relevant parameters to reconstruct the accident according to the scene of the accident.
[6] VeithAG.A Review of Important Factors Affecting Treadwear.Rubber Chemist and Technology, 1992,65(3):601一658 [7] Walters MH.Uneven Wear of Vehicle Tires.Tire Science And Technology,1993,21(4):202一219
Online since: July 2016
Authors: Jia Lin Sun, Wen Dong Xue, Ruo Meng Xu, Jia Xin An, Feng Rui Zhai
The influence of sintering pressure on density and mechanical properties of the composites were studied.
The influence of pressure on density and mechanical properties of BN-Si3N4 composite ceramics were studied.
Considering such factors as security and energy consumption, 40MPa is optimal for the SPS sintering process.
Influence of hBN content on mechanical and tribological properties of Si3N4/BN ceramic composites, J.
Effect of porosity on mechanical and dielectric properties of 20% BN/Si3N4 composite porous ceramics.
The influence of pressure on density and mechanical properties of BN-Si3N4 composite ceramics were studied.
Considering such factors as security and energy consumption, 40MPa is optimal for the SPS sintering process.
Influence of hBN content on mechanical and tribological properties of Si3N4/BN ceramic composites, J.
Effect of porosity on mechanical and dielectric properties of 20% BN/Si3N4 composite porous ceramics.
Online since: November 2011
Authors: Omar Elmabrouk, Osama M. Erfan, Ali Kalkanli
The main factors affecting shape of graphite cast iron are the metallurgical structures and the section thicknesses.
Cast iron of different shapes of graphite particles directly affect its thermo-mechanical properties.
The nodular shape of these graphite particles such as in ductile cast iron improve its mechanical properties, on the other hand, when the shape of these graphite particles become elongated such as in flake graphite cast iron results in improving its thermal conductivity.
In between, the worm-like shape of these graphite particles such as in compacted graphite cast iron, make this type of cast iron to have thermo-mechanical properties in between those of ductile and flake graphite cast iron.
In the same matrix e.g. pearlitic matrix, the properties of graphite cast iron various based on the shape of graphite particles.
Cast iron of different shapes of graphite particles directly affect its thermo-mechanical properties.
The nodular shape of these graphite particles such as in ductile cast iron improve its mechanical properties, on the other hand, when the shape of these graphite particles become elongated such as in flake graphite cast iron results in improving its thermal conductivity.
In between, the worm-like shape of these graphite particles such as in compacted graphite cast iron, make this type of cast iron to have thermo-mechanical properties in between those of ductile and flake graphite cast iron.
In the same matrix e.g. pearlitic matrix, the properties of graphite cast iron various based on the shape of graphite particles.
Online since: March 2015
Authors: Xiao Yu, Xiang Tong Yang, Fu Xiang Zhang, Yi Hua Dou, Yang Yu
It is the chemical composition of elastomer that determines the mechanical properties of the elastomer; the paste process of strain gages will affect the parameters of the torque transmitter, such as linearity, measurement accuracy, hysteresis, repeatability etc.
Whether the recording apparatus to measure the accurate torque control directly affects the quality of the buckle.
Its mechanical properties are shown in Table 1.
For the paste process, the main consideration is the following factors: (1)Processing method of paste treated surface: Should study rust removal method of pasted surface because degreasing rust effect directly affects the co-attached degree of strain gauges and elastomers
(2) Elastomer is a key component of torque sensor, the chemical composition of elastomer directly determines the mechanical properties of the elastomer
Whether the recording apparatus to measure the accurate torque control directly affects the quality of the buckle.
Its mechanical properties are shown in Table 1.
For the paste process, the main consideration is the following factors: (1)Processing method of paste treated surface: Should study rust removal method of pasted surface because degreasing rust effect directly affects the co-attached degree of strain gauges and elastomers
(2) Elastomer is a key component of torque sensor, the chemical composition of elastomer directly determines the mechanical properties of the elastomer
Online since: February 2024
Authors: Sunday Lukeman Lawal, Tien Chien Jen, Esther Titilayo Akinlabi, Sunday Adeniran Afolalu
This phenomenon compromises the properties of the metal by changing the appearance as well as tends to worsen the performance in terms of the mechanical properties [12].
Thus, moisture, temperature, contaminants that are airborne like chloride, Sulphur dioxide and carbon dioxide constitute the factors that affect marine-industrial corrosion [43].
Effect of ER5183 filler rod on the metallurgical and mechanical properties of TIG-welded AA5083 and AA5754 joints.
Microstructure-based modeling of the PMZ mechanical properties in 2219-T8 aluminum alloy TIG welding joint.
On mechanical properties of SLM Al–Si alloy: Role of heat treatment-induced evolution of silicon morphology.
Thus, moisture, temperature, contaminants that are airborne like chloride, Sulphur dioxide and carbon dioxide constitute the factors that affect marine-industrial corrosion [43].
Effect of ER5183 filler rod on the metallurgical and mechanical properties of TIG-welded AA5083 and AA5754 joints.
Microstructure-based modeling of the PMZ mechanical properties in 2219-T8 aluminum alloy TIG welding joint.
On mechanical properties of SLM Al–Si alloy: Role of heat treatment-induced evolution of silicon morphology.
Online since: November 2012
Authors: De Yi Jiang, Tao Ren, Song Ren, Jie Chen, Xue Qin Fan
The Experiment to Research the Mudstone Interbeds Which Affect the Mechanical Characters of the Layered Rock Salt
Deyi JIANG1,a , Xueqin Fan1, b , Tao REN1, c, Jie CHEN1 and Song REN1
1State Key Laboratory for the Coal Mine Disaster Dynamics and Controls, Chongqing University, Chongqing 400044, China
adeyij@cqu.edu.cn, b793328574@qq.com, crentaocqu@gmail.com
Keywords: Mudstone Interlayer; Type salt; Mechanical Properties; Whole Strain Process
Abstract.
In order to get the changing law of layered sail-rock's mechanic property on the condition of different interlayer factors, this thesis refers to the production process of coal, and obtains the layered salt-rock that is similar to real sample and has regular change by means to compound and compression moulding.
Then having the uniaxial and triaxial compression test on it to compare and analyze the law of layered sail-rock's mechanic property on the condition of different interlayer factors.
Fig. 6 Uniaxial compression specimen to destruction Conclusion This paper is to research the rules of influencing factors which the characteristics of the interlayer make to the mechanical properties of the bedded salt rock by the way of the self-made layered salt rock style salt with the regular interlayer characteristics.
Rock salt-the mechanical properties of the host rock material for a radioactive waste repository[J].
In order to get the changing law of layered sail-rock's mechanic property on the condition of different interlayer factors, this thesis refers to the production process of coal, and obtains the layered salt-rock that is similar to real sample and has regular change by means to compound and compression moulding.
Then having the uniaxial and triaxial compression test on it to compare and analyze the law of layered sail-rock's mechanic property on the condition of different interlayer factors.
Fig. 6 Uniaxial compression specimen to destruction Conclusion This paper is to research the rules of influencing factors which the characteristics of the interlayer make to the mechanical properties of the bedded salt rock by the way of the self-made layered salt rock style salt with the regular interlayer characteristics.
Rock salt-the mechanical properties of the host rock material for a radioactive waste repository[J].
Online since: May 2011
Authors: Jian Dong Ding, Ying Lei, Wei Dong Lu, De Liang Xu, Ding Zhou, Wei Qing Liu
The mechanical properties of single-bolted steel-glulam-steel connection subjected to a load parallel to the grain have been studied.
Researchers from Europe, United States, Japan have studied the impact of these factors, and the results are mainly reflected in the national specifications [5-7].
In China , by experimental study and theoretical analysis, Fancheng Mu and Xiaoying Huan studied the mechanical properties of single-bolt of log to log [8, 9].
In this paper, the mechanical properties of the SGS single bolt joints were studied through selecting the typical components on the experiment.
Fig. 6 K1, K2 of the specimens Fig. 7 Ductility factors of the specimens Fig. 7 reveals that the ductility coefficient of the specimen changes with the change of the glulam thickness ratio ( lm/d).
Researchers from Europe, United States, Japan have studied the impact of these factors, and the results are mainly reflected in the national specifications [5-7].
In China , by experimental study and theoretical analysis, Fancheng Mu and Xiaoying Huan studied the mechanical properties of single-bolt of log to log [8, 9].
In this paper, the mechanical properties of the SGS single bolt joints were studied through selecting the typical components on the experiment.
Fig. 6 K1, K2 of the specimens Fig. 7 Ductility factors of the specimens Fig. 7 reveals that the ductility coefficient of the specimen changes with the change of the glulam thickness ratio ( lm/d).
Online since: February 2012
Authors: Lei Li, Qiang Li, Yu Qi Chen, Guo Jie Huang
However, its mechanical and hot-working properties are not satisfied.
The film-like Bi dissevers the matrix and lead to the decrease of mechanical properties.
Test Methods of Mechanical Property and Machianbility.
The mechanical properties entirely meet to the application requirements.
In order to examine the factors affecting the mechanical properties of BiAl-brass, fracture surface of the extruding bar of BiAl-1# was analyzed with SEM with EDS, as Figure 4 shown.
The film-like Bi dissevers the matrix and lead to the decrease of mechanical properties.
Test Methods of Mechanical Property and Machianbility.
The mechanical properties entirely meet to the application requirements.
In order to examine the factors affecting the mechanical properties of BiAl-brass, fracture surface of the extruding bar of BiAl-1# was analyzed with SEM with EDS, as Figure 4 shown.
Online since: July 2015
Authors: Li Song, Jie Chen, Hui Ding
The force affect factors of anchor anti-slide pile in slope reinforcement under seismic load are studied in this paper.
Therefore, under the action of earthquake, for maximum shear and maximum moment, the range corresponding to S is the biggest, the range corresponding to b, h is the medium, the range corresponding to L is the minimum; S is a major factor affecting maximum internal force of pile.
Conclusion The force affect factors of anchor anti-slide pile in slope reinforcement under seismic load are studied in this paper.
Study overview of interface properties between soil and structural material [J].Hohai technology progress, 1994, 14(4):1-8
The Mechanical Properties Study of Interface between Soil and Structure [D].Master Degree Thesis of Dalian University of Technology, 2011
Therefore, under the action of earthquake, for maximum shear and maximum moment, the range corresponding to S is the biggest, the range corresponding to b, h is the medium, the range corresponding to L is the minimum; S is a major factor affecting maximum internal force of pile.
Conclusion The force affect factors of anchor anti-slide pile in slope reinforcement under seismic load are studied in this paper.
Study overview of interface properties between soil and structural material [J].Hohai technology progress, 1994, 14(4):1-8
The Mechanical Properties Study of Interface between Soil and Structure [D].Master Degree Thesis of Dalian University of Technology, 2011