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Online since: January 2010
Authors: Masato Wakeda, Yoji Shibutani
In recent years, there have been
considerable interests in their medium-range order (MRO) structures, which surely affect the glass
forming ability as well as mechanical properties.
The quantitative relationship of such a MRO to the glass forming ability and to the mechanical properties is currently major concerns.
Since the large internal displacements, which are intrisically involved in the stress-strain response, generally arises in the inhomogenenuos amorphous strucutres, it may be much affected to the elastic properties.
Thus, inter-penetrating icosahedral cluster is one of the possible factors to explain the 5% difference observed in Fig. 3.
It is reasonable to suppose that such clusters also can be causal factors contributing to the correlation between the global elastic moduli and the free volume content.
The quantitative relationship of such a MRO to the glass forming ability and to the mechanical properties is currently major concerns.
Since the large internal displacements, which are intrisically involved in the stress-strain response, generally arises in the inhomogenenuos amorphous strucutres, it may be much affected to the elastic properties.
Thus, inter-penetrating icosahedral cluster is one of the possible factors to explain the 5% difference observed in Fig. 3.
It is reasonable to suppose that such clusters also can be causal factors contributing to the correlation between the global elastic moduli and the free volume content.
Online since: September 2018
Authors: Faramarz Djavanroodi, Fahd Almufadi
Grain size is a key factor affecting physical and mechanical properties of polycrystals materials.
Introduction Tailoring material properties to specific application requirements is one of the major challenges in materials engineering.
Grain size is a key factor affecting physical and mechanical properties of polycrystals materials.
Using these tensile properties, true stress-plastic strain data was tabulated in ABAQUS for plastic strains of up to 10% where isotropic hardening was assumed.
Djavanroodi, Arab J Sci Eng (2015) 40 (9) :2785–2794 [19] eFunda, “Typical Properties of Copper Alloys,” 2015.
Introduction Tailoring material properties to specific application requirements is one of the major challenges in materials engineering.
Grain size is a key factor affecting physical and mechanical properties of polycrystals materials.
Using these tensile properties, true stress-plastic strain data was tabulated in ABAQUS for plastic strains of up to 10% where isotropic hardening was assumed.
Djavanroodi, Arab J Sci Eng (2015) 40 (9) :2785–2794 [19] eFunda, “Typical Properties of Copper Alloys,” 2015.
Online since: December 2023
Authors: Mohammed Manzoor Hussain, Pooja Angolkar
They covered various aspects of AlSi10Mg, including its properties, microstructure, processing, and applications. [41] They discussed how heat treatment and manufacturing factors affected the mechanical characteristics of AlSi10Mg. [14] released an evaluation on the AlSi10Mg generated through AM's resistance to corrosion.
They discussed how AlSi10Mg's corrosion resistance is affected by manufacturing factors and post-processing procedures.
They discussed how post-processing procedures and processing factors affected AlSi10Mg's wear resistance.
They discussed how post-processing procedures and processing factors affected the corrosion resistance of 17-4 PH SS.
They discussed how post-processing procedures and processing factors affected the wear resistance of 17-4 PH SS.
They discussed how AlSi10Mg's corrosion resistance is affected by manufacturing factors and post-processing procedures.
They discussed how post-processing procedures and processing factors affected AlSi10Mg's wear resistance.
They discussed how post-processing procedures and processing factors affected the corrosion resistance of 17-4 PH SS.
They discussed how post-processing procedures and processing factors affected the wear resistance of 17-4 PH SS.
Online since: March 2017
Authors: Zakaria Razak, Abu Bakar Sulong, Norhamidi Muhamad, Mohd Khairul Fadzly Md Radzi
From the analysis of variance (ANOVA), both flow rate and injection temperature give highest contribution factor to the mechanical properties of the kenaf/PP composites.
Tuo et al. approached the optimum parameters on mechanical properties of kenaf fiber-reinforced composites using Taguchi method of experimental design.
From the analysis of variance (ANOVA), both flow rate and injection temperature give highest contribution factor to the mechanical properties of the kenaf/PP composites.
ANOVA was also used to investigate the collected data to obtain which significant factors would affect all responses.
The highest percentage contribution was also shown up by flow rate factors (D) followed by injection temperature factors (A) for both evaluation criteria.
Tuo et al. approached the optimum parameters on mechanical properties of kenaf fiber-reinforced composites using Taguchi method of experimental design.
From the analysis of variance (ANOVA), both flow rate and injection temperature give highest contribution factor to the mechanical properties of the kenaf/PP composites.
ANOVA was also used to investigate the collected data to obtain which significant factors would affect all responses.
The highest percentage contribution was also shown up by flow rate factors (D) followed by injection temperature factors (A) for both evaluation criteria.
Online since: October 2011
Authors: Gugulothu Bhiksha, K. Buschaiah
Consequently the erosion rate depends on spark energy sparking frequency and the factors affecting them.
The associated factors and the ended levels are listed in Table2.
L8 /26 Orthogonal array Factors/ Expt.
The effect of work material properties is considerable.
Of all the factors electrode polarity is most significant.
The associated factors and the ended levels are listed in Table2.
L8 /26 Orthogonal array Factors/ Expt.
The effect of work material properties is considerable.
Of all the factors electrode polarity is most significant.
Online since: April 2011
Authors: Xiao Wang
The toxic, corrosive, flammable and explosive properties of leakage make it difficult to approach the Fire in processing various types of fire.
Arm Fig.1 Ttructure diagram of Fire robots working device Structural design of Mechanical arm components Mechanical arm is the executive body of the fire Robot, to be good or bad of the institutional type will directly affect the entire system.
If the structure of the robot upper arm and the arm have the same form, it should be based on the movement and spider weight of the robot and other factors .
After treatment, the local force of the model will partly change, but it does not affect the overall results.
In the conditions of selecting 5 as the safety factor, we can ensure that the press of all parts are less than the maximum allowable stress, all that meet the actual requirements.
Arm Fig.1 Ttructure diagram of Fire robots working device Structural design of Mechanical arm components Mechanical arm is the executive body of the fire Robot, to be good or bad of the institutional type will directly affect the entire system.
If the structure of the robot upper arm and the arm have the same form, it should be based on the movement and spider weight of the robot and other factors .
After treatment, the local force of the model will partly change, but it does not affect the overall results.
In the conditions of selecting 5 as the safety factor, we can ensure that the press of all parts are less than the maximum allowable stress, all that meet the actual requirements.
Online since: June 2015
Authors: Xiang Wei Hao, Feng Ma, Qing Yang Ma
The analysis result shows that, the level of deck status may apparently affect the mean value and the MSD(mean square deviation), the differences of vehicle impact factors in case of different assurance rates are large.
Some domestic and foreign scholars carried out researches on this aspect: Huang Dongzhou[1] analyzed the dynamic properties and impact factor of a medium-bearing type of concrete-filled steel tube arch bridge with span not beyond 200m, raised the relevant formulas for simplifying calculation; Sun Chao, Chen Baochun, etc. [2], collected the actually-measured impact factors of many concrete-filled steel tube arch bridge and gave a simplified formula for calculating the impact factor of a routine concrete-filled steel tube arch bridge, found that the actually-measured impact factors of many concrete-filled steel tube arch bridges are basically higher than the values specified in the contemporary specifications; Yan Zhigang, etc. [3], carried out a theoretical and actually-measured analysis for the dynamic impact effect of a medium-bearing concrete-filled steel tube arch bridge, they deemed that the deck roughness is the main exterior cause affecting the impact factor.
As an important factor that affects the vehicle impact effect of a bridge, deck roughness has apparent randomness.
On basis of this, in allusion to the effect of the random properties of the roughness, a statistic analysis was conducted for the impact effect of the loading bridge and some valuable conclusions were given.
Order of mode participating in calculation Vertical Displacement (mm) Fig.3 Effect of mode truncation order on the maximum value of the dynamic deflection at span middle 4 Impact factor statistics analysis in case of random roughness 4.1 Selection on the quantity of roughness swatch in impact factor statistics analysis Deck roughness is an important factor affecting the vehicle load impact factor of bridge, it has apparent randomness.
Some domestic and foreign scholars carried out researches on this aspect: Huang Dongzhou[1] analyzed the dynamic properties and impact factor of a medium-bearing type of concrete-filled steel tube arch bridge with span not beyond 200m, raised the relevant formulas for simplifying calculation; Sun Chao, Chen Baochun, etc. [2], collected the actually-measured impact factors of many concrete-filled steel tube arch bridge and gave a simplified formula for calculating the impact factor of a routine concrete-filled steel tube arch bridge, found that the actually-measured impact factors of many concrete-filled steel tube arch bridges are basically higher than the values specified in the contemporary specifications; Yan Zhigang, etc. [3], carried out a theoretical and actually-measured analysis for the dynamic impact effect of a medium-bearing concrete-filled steel tube arch bridge, they deemed that the deck roughness is the main exterior cause affecting the impact factor.
As an important factor that affects the vehicle impact effect of a bridge, deck roughness has apparent randomness.
On basis of this, in allusion to the effect of the random properties of the roughness, a statistic analysis was conducted for the impact effect of the loading bridge and some valuable conclusions were given.
Order of mode participating in calculation Vertical Displacement (mm) Fig.3 Effect of mode truncation order on the maximum value of the dynamic deflection at span middle 4 Impact factor statistics analysis in case of random roughness 4.1 Selection on the quantity of roughness swatch in impact factor statistics analysis Deck roughness is an important factor affecting the vehicle load impact factor of bridge, it has apparent randomness.
Online since: August 2013
Authors: Hong Zhi Yan, Wu Zhong Tan, Mao Hui Qing
The Effects of the manufacturing errors of a group of sprags on the Engagement Properties of Sprag Clutch
Maohui Qing1, a, Hongzhi Yan1, b and Wuzhong Tan1, c
1School of Mechanical and Electrical Engineering, Central South University, Changsha 410012, China
aqingmaohui@sina.com, byhzcsu@csu.edu.cn, ctanwuzhong@163.com
Keywords: Manufacturing errors of a group of sprags, Simulation, Engagement properties
Abstract.
Established the geometric model of overrunning clutch and the dynamic model using Adams, and then analyzed the engagement properties of the overrunning clutch with actual manufacturing error.
Introduction The flexibility and reliability action of overrunning clutch is one of the key factors affecting the safe operation of the aircraft [1].
H J Peeken’s analysis pointed out that the clutch rapidly wedging action may cause of sprag suddenly ran out[2].FC Williams analysis of the dynamic characteristics of the sprag clutch, established the clutch multiple factors sliding model in the process of wedging [3].C Chassapis established the sprag clutch nonlinear rigidity dynamic analysis model in the process of wedging and wedged state[4].In the domestic, Chen Xiangyuan, Liang Weisen and others studied the sprag overrunning clutch manufacturing process[5].The Northwestern Polytechnical University Professor, Wang Jinhua studied wedge overrunning clutch radial deformation [6].
Mechanical design and manufacturing, 2008(4):130-132.
Established the geometric model of overrunning clutch and the dynamic model using Adams, and then analyzed the engagement properties of the overrunning clutch with actual manufacturing error.
Introduction The flexibility and reliability action of overrunning clutch is one of the key factors affecting the safe operation of the aircraft [1].
H J Peeken’s analysis pointed out that the clutch rapidly wedging action may cause of sprag suddenly ran out[2].FC Williams analysis of the dynamic characteristics of the sprag clutch, established the clutch multiple factors sliding model in the process of wedging [3].C Chassapis established the sprag clutch nonlinear rigidity dynamic analysis model in the process of wedging and wedged state[4].In the domestic, Chen Xiangyuan, Liang Weisen and others studied the sprag overrunning clutch manufacturing process[5].The Northwestern Polytechnical University Professor, Wang Jinhua studied wedge overrunning clutch radial deformation [6].
Mechanical design and manufacturing, 2008(4):130-132.
Online since: April 2014
Authors: Dagmar Palovcikova, Jan Vanerek, Ester Helanová
The action of wood-rot fungi on wood reduces the durability of wood, which is reflected in particular by reducing physical - mechanical properties.
The brown-rot fungi affect several strength properties of wood before significant weight loss is detected [10].
The degradation of polysacharides is affected by generally several factors, especially by pH value and temperature. 1.2.
Factors affecting the development of mould and brown rot decay in wooden material and wooden structures - effect of humidity, temperature and exposure time.
Factors affecting the development of biodeterioration in wooden material and wooden constructions.
The brown-rot fungi affect several strength properties of wood before significant weight loss is detected [10].
The degradation of polysacharides is affected by generally several factors, especially by pH value and temperature. 1.2.
Factors affecting the development of mould and brown rot decay in wooden material and wooden structures - effect of humidity, temperature and exposure time.
Factors affecting the development of biodeterioration in wooden material and wooden constructions.
Online since: June 2011
Authors: Zhi Wei Wu, Jing Sun, Yao Li Wang, Gai Hong Dong, Chen Yang Li
Creep property is one of the most important factors to affect the reliability of soldered joints.
It has been proved feasible and useful adding tiny RE in the lead-free solder to improve the creep properties of solder joints [4-7].
But there are very few reports about the study of creep properties and reliability of low Ag content SnAgCuRE solder joints [8].
Measuring of Creep Properties of Solder Joints.
Once formed the RE compound, it is harmful to the mechanical properties of the solder alloy and to the creep properties of solder joint because of defect usually exiting in the solder joints during soldering.
It has been proved feasible and useful adding tiny RE in the lead-free solder to improve the creep properties of solder joints [4-7].
But there are very few reports about the study of creep properties and reliability of low Ag content SnAgCuRE solder joints [8].
Measuring of Creep Properties of Solder Joints.
Once formed the RE compound, it is harmful to the mechanical properties of the solder alloy and to the creep properties of solder joint because of defect usually exiting in the solder joints during soldering.