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Online since: November 2012
Authors: Yong Xia Liu, Qi Wang Zhou, Shu Liang Zou, Tao Tang
Taking the simulation of the chain transmission mechanism in feeding system of a mechanical equipment as the research object, the kinematical properties and the affecting factors are analysed in this paper.
Defining the connection between links and the sprocket-wheel as “cam” connection can realistically simulates the motion relation that the sprocket- wheel’s rotation drives the movement of the chain, and accurately reveals the kinematical properties of this kind of chain transmission mechanisms.
Mechanical Transmission. 2010.
China Mechanical Engineering.
Deng: Mechanical 3D Dynamic Design Simulation Technology.
Defining the connection between links and the sprocket-wheel as “cam” connection can realistically simulates the motion relation that the sprocket- wheel’s rotation drives the movement of the chain, and accurately reveals the kinematical properties of this kind of chain transmission mechanisms.
Mechanical Transmission. 2010.
China Mechanical Engineering.
Deng: Mechanical 3D Dynamic Design Simulation Technology.
Online since: March 2008
Authors: Xia Xie, Ya Ming Jiang, Guan Xiong Qiu, Peng Wang, Ai Fen Xu
In the present paper, a theoretical model and an experimental investigation on the axial tensile
properties of MFWT is presented.
Theoretical Mechanical Analysis Model of the Tubes Elastic Properties and Strength of Uniaxial Laminae.
Obviously, it is a structure of laminate, whose properties depend on the elastic properties and stacking sequence of uniaxial lamina.
This is a key factor which can inevitably affect the actual strength.
And other factors can also affect the strength in reality, such as the inter-woven filaments, the porosity, and so on.
Theoretical Mechanical Analysis Model of the Tubes Elastic Properties and Strength of Uniaxial Laminae.
Obviously, it is a structure of laminate, whose properties depend on the elastic properties and stacking sequence of uniaxial lamina.
This is a key factor which can inevitably affect the actual strength.
And other factors can also affect the strength in reality, such as the inter-woven filaments, the porosity, and so on.
Online since: November 2015
Authors: Vishwanath Prasad, V.K. Soni, Ravindra singh rana
Mechanical properties of Al alloys can be greatly enhanced by incorporating reinforcing particles, forming composite.
The most important benefit of this technique is to find out the possible interaction between the factors.
Mechanical and Wear properties The mechanical properties of a composite depend on many factors such type of reinforcement, quantity of reinforcement, shape, size etc.
The author have produced Al (6061-T6)/B4C composite and investigated its mechanical properties.
Applied load is the wear factor that has the highest physical properties as well as statistical influence on the dry sliding wear rate of the composites among the other factors such as sliding speed and sliding distance.
The most important benefit of this technique is to find out the possible interaction between the factors.
Mechanical and Wear properties The mechanical properties of a composite depend on many factors such type of reinforcement, quantity of reinforcement, shape, size etc.
The author have produced Al (6061-T6)/B4C composite and investigated its mechanical properties.
Applied load is the wear factor that has the highest physical properties as well as statistical influence on the dry sliding wear rate of the composites among the other factors such as sliding speed and sliding distance.
Online since: December 2012
Authors: Ting Wang, Chen Liu, Yong Rui Zhao, Ming Xiang Zang
By Combining Taguchi method and injection molding simulation software – Moldflow, this paper studied FBGA and PBGA warpage deformation in the POP, setted four design factors, such as the mold temperature, melt temperature, injection pressure and injection time , find out the minimum warpage combination of design and critical design factors affecting the warpage.
Select four factors as the main parameters that affecting warpage, the mold temperature as A, the melt temperature as B, injection pressure as C and the injection time as D, arrange the orthogonal experiment refer to the orthogonal table L9 (34), table 1 is the level table for the selected factors.
Table 1 Factor level table factors A.
By using the mean SNR level that contains all the trials of the factors, we can get the main effect of each factors and levels to the quality indicators (mfi).
(1)The experimental results shows, the holding pressure and holding pressure time are the main factors affecting the warpage change.
Select four factors as the main parameters that affecting warpage, the mold temperature as A, the melt temperature as B, injection pressure as C and the injection time as D, arrange the orthogonal experiment refer to the orthogonal table L9 (34), table 1 is the level table for the selected factors.
Table 1 Factor level table factors A.
By using the mean SNR level that contains all the trials of the factors, we can get the main effect of each factors and levels to the quality indicators (mfi).
(1)The experimental results shows, the holding pressure and holding pressure time are the main factors affecting the warpage change.
Online since: June 2013
Authors: Ewelina Bernstock-Kopaczyńska, Magdalena Jabłońska
Moreover, in these alloys, we observed a long-range ordering, which can significantly affect the mechanical and physical properties and their stability.
It should be emphasized that formation of properties of Fe-Al alloys in heat treatment and plastic working processes is under strong influence of long-range ordering and so-called vacancy hardening occurring in these alloys.
George and Baker [9] point out that explanation of mechanical properties of Fe-Al alloys is based on a balance between two phenomena: firstly, the presence of thermal vacancies, which cause hardening of the material, and, secondly, thermal vacancies causing dislocation creep (glide and climb).
The factors influencing the vacancy elimination (softening effect) were analyzed.
The authors of [11] point that, irrespective of the chemical composition, two factors have an important influence on the softening rate of the alloys: rate of vacancy migration determined by the value of effective enthalpy of vacancy migration, and density of sinks for vacancies.
It should be emphasized that formation of properties of Fe-Al alloys in heat treatment and plastic working processes is under strong influence of long-range ordering and so-called vacancy hardening occurring in these alloys.
George and Baker [9] point out that explanation of mechanical properties of Fe-Al alloys is based on a balance between two phenomena: firstly, the presence of thermal vacancies, which cause hardening of the material, and, secondly, thermal vacancies causing dislocation creep (glide and climb).
The factors influencing the vacancy elimination (softening effect) were analyzed.
The authors of [11] point that, irrespective of the chemical composition, two factors have an important influence on the softening rate of the alloys: rate of vacancy migration determined by the value of effective enthalpy of vacancy migration, and density of sinks for vacancies.
Online since: April 2014
Authors: Zhen Fan, Xiu Jun Liu, Tong Qi Li, Shu Jie Sun, Zhi Hai Feng
Material fillers was connected to a whole, such that composite had better mechanical properties and other properties.
The primary aim is to illustrate the influence of particle size of graphite flake on microstructure, mechanical properties and conductive property.
Results and discussion Mechanical properties of graphite blocks Physical properties of the graphite blocks prepared with different mean particle size of NG are shown in Table 1.
It can be seen from the table that the mean particle size of NG has influence on mechanical properties of graphite/mesophase pitch composites.
Due to the very low porosity and highly oriented graphite layers, high mechanical properties can be expected.
The primary aim is to illustrate the influence of particle size of graphite flake on microstructure, mechanical properties and conductive property.
Results and discussion Mechanical properties of graphite blocks Physical properties of the graphite blocks prepared with different mean particle size of NG are shown in Table 1.
It can be seen from the table that the mean particle size of NG has influence on mechanical properties of graphite/mesophase pitch composites.
Due to the very low porosity and highly oriented graphite layers, high mechanical properties can be expected.
Online since: October 2014
Authors: Jian Zhang, Hong Wei Deng, Chun Fang Dong, Jie Lin Li, Ke Ping Zhou, Wei Gang Tian
The research can provide some mechanical parameters basis to physical mechanics properties of sandstones.
Therefore, the studies on the physical and mechanical properties of rocks under the condition of water chemical environment and temperature effect are of great importance to know well the deformation and strength properties of rocks.
In the mechanical properties of rocks under the effect of water chemistry, many foreign and domestic scholars also have conducted studies.
Third, rock's strength damage is affected by many factors, and the rock the practical engineering is often under coupling action of many factors.
Determination of some thermo mechanical properties of Sirahama sandstone under subzero temperature condition [J].
Therefore, the studies on the physical and mechanical properties of rocks under the condition of water chemical environment and temperature effect are of great importance to know well the deformation and strength properties of rocks.
In the mechanical properties of rocks under the effect of water chemistry, many foreign and domestic scholars also have conducted studies.
Third, rock's strength damage is affected by many factors, and the rock the practical engineering is often under coupling action of many factors.
Determination of some thermo mechanical properties of Sirahama sandstone under subzero temperature condition [J].
Online since: December 2009
Authors: Sukum Eitssayeam, Amporn Kamonlert, Anuson Niyompan, R. Tipakontitikul
The piezoelectric ceramics that suitable for transformer application should have a
high mechanical quality factor (Qm) and low dielectric loss (tanδ) [4].
However, there is no single ceramic composition that owing such properties.
The electromechanical coupling factor (kp) and the mechanical quality factor (Qm) were determined by the resonance and anti-resonance technique on the basis of IEEE standards using an impedance analyzer (Hewlett Packard 4164 A).
While, the d33, kp and Qm factors are increased but went to saturation at approximately 6 mol% of MnO2.
The results show that the electrical properties can be improved via MnO2 addition.
However, there is no single ceramic composition that owing such properties.
The electromechanical coupling factor (kp) and the mechanical quality factor (Qm) were determined by the resonance and anti-resonance technique on the basis of IEEE standards using an impedance analyzer (Hewlett Packard 4164 A).
While, the d33, kp and Qm factors are increased but went to saturation at approximately 6 mol% of MnO2.
The results show that the electrical properties can be improved via MnO2 addition.
Online since: April 2025
Authors: Zeeshan Ullah, Muhammad Khurram Rashid, Saima Shafi Ur Rehman, Maryam Sadia
This results in denser concrete with superior mechanical properties [2].
The primary advantages of high-strength concrete include many economic factors as well as the requirements for a practical solution in today’s material science.
The production process and nature of silica fume significantly influence its chemical and physical properties, which in turn affect its performance in concrete.
Traditionally, small changes in properties such as concrete mix design, curing, and other factors of normal-strength concrete result in only minor variations in strength and other characteristics.
Silica fume, being a highly reactive pozzolan, was chosen for its ability to significantly enhance the mechanical properties and durability of concrete [15].
The primary advantages of high-strength concrete include many economic factors as well as the requirements for a practical solution in today’s material science.
The production process and nature of silica fume significantly influence its chemical and physical properties, which in turn affect its performance in concrete.
Traditionally, small changes in properties such as concrete mix design, curing, and other factors of normal-strength concrete result in only minor variations in strength and other characteristics.
Silica fume, being a highly reactive pozzolan, was chosen for its ability to significantly enhance the mechanical properties and durability of concrete [15].
Online since: April 2023
Authors: Oritonda Muribwathoho, Sipokazi Mabuwa, Velaphi Msomi
FSP was developed to improve fatigue life without affecting the surface properties of metal alloys such as formability, hardness, ductility, strength, and the properties of bulk metals [19].
The mechanical properties of produced composites incorporating cerium oxides or CNTs were enhanced.
It has been investigated how the mechanical properties are affected by FSP process factors such tool geometry, traverse speed, and rotational speed.
It has been investigated how the mechanical properties are affected by FSP process factors such tool geometry, traverse speed, and rotational speed.
Three successive FSP passes and the mechanical properties of reinforced particles were studied.
The mechanical properties of produced composites incorporating cerium oxides or CNTs were enhanced.
It has been investigated how the mechanical properties are affected by FSP process factors such tool geometry, traverse speed, and rotational speed.
It has been investigated how the mechanical properties are affected by FSP process factors such tool geometry, traverse speed, and rotational speed.
Three successive FSP passes and the mechanical properties of reinforced particles were studied.