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Online since: December 2009
Authors: Jian Hua Qin, Chun Hui Liu, Wen Feng Gao, Chuan Hao Yu
During the process of it based on
molding in barrel technology, one of the main factors influencing to whether UHMW-PE pipe can
be successfully molded or not is whether the melting process of raw material is adequate and
appropriate or not.
For its excellent physical mechanical properties, UHMW-PE can have been found wide application in many aspects of our national economy, it is the most excellent pipe material with wear-resistance and resistance to chemical corrosion especially for transportation of the granule or powder state of materiel, plasm, a mixture of solid and liquid, there are very wide application fields to pipe of pure UHMW-PE[1~2].
Although the latter can produce pipe in a row, but some additives must be added in modeling process to change flowability of UHMW-PE melt, which will cause the molecular weight of UHNWPE pipe to be decreased after UHMW-PE pipe having been molded, thus will lower excellent service properties of UHNWPE pipe.
Whether the melting process of raw material is adequate and appropriate or not is one of the main factors which determine whether the molding process of UHMW-PE pipe can be successful or not.
The Features of UHMW-PE and application in Machinery, Mechanical Engineering Materials [J],2001(8): pp43-46. 2.
For its excellent physical mechanical properties, UHMW-PE can have been found wide application in many aspects of our national economy, it is the most excellent pipe material with wear-resistance and resistance to chemical corrosion especially for transportation of the granule or powder state of materiel, plasm, a mixture of solid and liquid, there are very wide application fields to pipe of pure UHMW-PE[1~2].
Although the latter can produce pipe in a row, but some additives must be added in modeling process to change flowability of UHMW-PE melt, which will cause the molecular weight of UHNWPE pipe to be decreased after UHMW-PE pipe having been molded, thus will lower excellent service properties of UHNWPE pipe.
Whether the melting process of raw material is adequate and appropriate or not is one of the main factors which determine whether the molding process of UHMW-PE pipe can be successful or not.
The Features of UHMW-PE and application in Machinery, Mechanical Engineering Materials [J],2001(8): pp43-46. 2.
Online since: August 2025
Authors: Oleg Lyashuk, Andrii Buketov, Yuri Shulga, Olga Syzonenko, Ihor Sieliverstov, Pavlo Vorobiov, Vitalii Sotsenko, Oleksandr Holotenko, Dmytro Mironov, Mariana Sokol, Danylo Stukhlіak, Tetiana Kolechyntseva
In addition, this hardener ensures the formation of materials with high levels of adhesion, mechanical properties, thermostability.
In works [16], the main methods of studying the mechanical properties of materials are given.
It should be noted that the last factor significantly affects the polymerization processes of the binder and is one of the determining factors in determining the optimal content of dispersed filler in the developed composites.
As a result, a polymer composite with enhanced mechanical properties was obtained.
This composite exhibits enhanced adhesive and mechanical properties.
In works [16], the main methods of studying the mechanical properties of materials are given.
It should be noted that the last factor significantly affects the polymerization processes of the binder and is one of the determining factors in determining the optimal content of dispersed filler in the developed composites.
As a result, a polymer composite with enhanced mechanical properties was obtained.
This composite exhibits enhanced adhesive and mechanical properties.
Online since: August 2022
Authors: Lydia Anggraini, Nanang Sutisna, Rendi Hernawan
Factors that affect the composition of rice husks is geographical situation, in addition to the type of fertilizer and rice varieties also play a role.
In order to emphasize the properties of SiO2 phase extracted and obtained from the rice husk ash, Zeiss brand of EDS (Energy-Dispersive X-ray Spectroscopy) analysis was used.
In addition, due to the presence of SiO2 and other components as rubber filler, rice husk ash has different properties.
Through the mechanical properties tests carried out in this research, the hardness of 62 GPa and the ability to withstand pressure, are lower than the silica products obtained commercially.
Improved characteristics, including properties, modulus, hardness and crack resistance were carried out by adding rice husk ash SiO2 filler to the rubber composite.
In order to emphasize the properties of SiO2 phase extracted and obtained from the rice husk ash, Zeiss brand of EDS (Energy-Dispersive X-ray Spectroscopy) analysis was used.
In addition, due to the presence of SiO2 and other components as rubber filler, rice husk ash has different properties.
Through the mechanical properties tests carried out in this research, the hardness of 62 GPa and the ability to withstand pressure, are lower than the silica products obtained commercially.
Improved characteristics, including properties, modulus, hardness and crack resistance were carried out by adding rice husk ash SiO2 filler to the rubber composite.
Online since: February 2007
Authors: Gabriella Faur-Csukat
The energy
absorption capacity of the composites were found to be strongly affected by material properties of
reinforcing fibre, type of fabric structure and elasticity of resin.
* Polypox H 030 flexible *-with this component elasticity of epoxy matrix can be adjusted Table 2 Properties of matrix components used for sample preparation Sample preparation.
The differences in fibre-matrix adhesion and in fibre properties (elongation, etc), probably influenced the energy absorption.
The thickness of composites greatly affects the energy absorption capacity during ballistic impact [5, 6, 7, 8].
The number of layers as influencing factor was investigated by drop weight tests and by big bore ballistic tests.
* Polypox H 030 flexible *-with this component elasticity of epoxy matrix can be adjusted Table 2 Properties of matrix components used for sample preparation Sample preparation.
The differences in fibre-matrix adhesion and in fibre properties (elongation, etc), probably influenced the energy absorption.
The thickness of composites greatly affects the energy absorption capacity during ballistic impact [5, 6, 7, 8].
The number of layers as influencing factor was investigated by drop weight tests and by big bore ballistic tests.
Online since: July 2014
Authors: Rajender Kumar, Vikas Kumar, Sultan Singh
This aspect of generating funds is dependent on two major factors i.e. reduction in product manufacturing cost, and enhancing the product quality to satisfy the customer needs.
The survey reports also analyze the application of these practices and examines the factors that are affects the Lean organization Performance. [3,16,17] In Indian context, some manufacturing industries have misapplied lean tools and techniques during the conversion to a lean organization from non lean.
Therefore, the designers must rely on the newer materials with reduced cost and enhanced properties so-that product becomes more acceptable on quality front and cost front.
Nelder, Critical success factors for lean implementation within SMEs, Journal of Manufacturing Technology Management, 17:4 (2006) 460-471
Cerio, 5S use in manufacturing plants: contextual factors and impact on operating performance, International Journal of Quality & Reliability Management, 27 (2010) 217-230
The survey reports also analyze the application of these practices and examines the factors that are affects the Lean organization Performance. [3,16,17] In Indian context, some manufacturing industries have misapplied lean tools and techniques during the conversion to a lean organization from non lean.
Therefore, the designers must rely on the newer materials with reduced cost and enhanced properties so-that product becomes more acceptable on quality front and cost front.
Nelder, Critical success factors for lean implementation within SMEs, Journal of Manufacturing Technology Management, 17:4 (2006) 460-471
Cerio, 5S use in manufacturing plants: contextual factors and impact on operating performance, International Journal of Quality & Reliability Management, 27 (2010) 217-230
Online since: August 2013
Authors: Dong Tao Xia, Xiang Kun Liu, Bo Ru Zhou
Based on the load–deflection and load–CMOD curves and the equivalent flexural tensile strength, the effect of fiber volume fraction and hybrid mode upon concrete's mechanical properties and post-peak behavior were investigated.
It has been widely recognized that the post-peak behavior and the gains in toughness are also important factors to evaluate fiber reinforced concrete.
Based on the test results, the effects of the fibers'hybrid mode and content upon hybrid fiber reinforced high performance concert's basic mechanical properties and post-peak behavior was analyzed.
The relationship between the basic mechanical properties and the fiber volume fraction are given in Fig.3. ( fc—compressive strength; f tsp—splitting tensile strength ) It can be found: (1) Fibers’ hybrid mode and volume fraction do not affect the plain concrete's compressive strength heavily.
As the steel fibers’ affect more and more weak, the modified polypropylene fiber begins to work too.
It has been widely recognized that the post-peak behavior and the gains in toughness are also important factors to evaluate fiber reinforced concrete.
Based on the test results, the effects of the fibers'hybrid mode and content upon hybrid fiber reinforced high performance concert's basic mechanical properties and post-peak behavior was analyzed.
The relationship between the basic mechanical properties and the fiber volume fraction are given in Fig.3. ( fc—compressive strength; f tsp—splitting tensile strength ) It can be found: (1) Fibers’ hybrid mode and volume fraction do not affect the plain concrete's compressive strength heavily.
As the steel fibers’ affect more and more weak, the modified polypropylene fiber begins to work too.
Online since: December 2007
Authors: Bo Zhao, Xun Sheng Zhu, Feng Jiao, Chuan Shao Liu
Introduction
With the progress of material science, engineering ceramics are playing an increasingly important
role in the fields of modern manufacturing industries, astronautics, electronics and precision
mechanical engineering because of their superior physical and mechanical properties [1].
However, because of their high rigidity, high brittleness and different physical and mechanical properties from metal material, it is hard to process such materials with high efficiency and good quality.
Especially, ultrasonic vibration machining (UVM), not affected by electricity and chemistry property of workpiece material, is suitable for the precision processing of engineering ceramics [4, 5].
Table 1 Mechanical properties of nano ZTA ceramic Density (g/cm3) Bending strength (MPa) Microhardness (HV10) Fracture toughness (MPa.m1/2) Elastic modulus (GPa) 4.6~4.99 650~900 2200~2400 6~7.6 285 Experimental equipment and measurements.
Box-Behnken design is a kind of method for evaluating the nonlinear relationship between index and factors.
However, because of their high rigidity, high brittleness and different physical and mechanical properties from metal material, it is hard to process such materials with high efficiency and good quality.
Especially, ultrasonic vibration machining (UVM), not affected by electricity and chemistry property of workpiece material, is suitable for the precision processing of engineering ceramics [4, 5].
Table 1 Mechanical properties of nano ZTA ceramic Density (g/cm3) Bending strength (MPa) Microhardness (HV10) Fracture toughness (MPa.m1/2) Elastic modulus (GPa) 4.6~4.99 650~900 2200~2400 6~7.6 285 Experimental equipment and measurements.
Box-Behnken design is a kind of method for evaluating the nonlinear relationship between index and factors.
Online since: November 2012
Authors: Gajanan P. Chaudhari, B.S. Sunder Daniel, H. Shivananda Nayaka
Introduction
Wrought magnesium alloys are desirable for many applications, as they have superior mechanical properties than cast alloys.
Ideally the grain growth exponent should be 2 for pure metals, but in some cases, the value of n may be higher than 2 due to the role played by various factors affecting the grain growth kinetics, such as the alloying elements, dislocation sub-structure, impurity-drag, free surface effect, texture, and heterogeneities [9].
We believe that the above-observed lower grain growth activation energy for the investigated AZ31 Mg alloy may be attributed to two factors.
Chen, Microstructure and mechanical properties of Mg–Al–Zn alloy sheets severely deformed by accumulative roll-bonding, J Mater Sci. 42 (2007) 9256 – 9261
Chen, Improving mechanical properties of Mg-Al-Zn alloy sheets through accumulative roll-bonding, Trans Nonferrous Met Soc. 18 (2008) 309 – 314
Ideally the grain growth exponent should be 2 for pure metals, but in some cases, the value of n may be higher than 2 due to the role played by various factors affecting the grain growth kinetics, such as the alloying elements, dislocation sub-structure, impurity-drag, free surface effect, texture, and heterogeneities [9].
We believe that the above-observed lower grain growth activation energy for the investigated AZ31 Mg alloy may be attributed to two factors.
Chen, Microstructure and mechanical properties of Mg–Al–Zn alloy sheets severely deformed by accumulative roll-bonding, J Mater Sci. 42 (2007) 9256 – 9261
Chen, Improving mechanical properties of Mg-Al-Zn alloy sheets through accumulative roll-bonding, Trans Nonferrous Met Soc. 18 (2008) 309 – 314
Online since: August 2014
Authors: Qin Zhang, Hisayuki Aoyama, Wei Jun Huang, Jian Hua Wang
Swirl-based Control Method of Cell Orientation
-Impact on Control Performance with Eccentricity
Zhang Qin1,a, Wang Jianhua1,b ,Huang Weijun1,c* and Hisayuki Aoyama2,d
1School of Mechanical & Automotive Engineering, South China University
of Technology, Guangzhou 510641, China
2Department of Mechanical Engineering & Intelligent Systems, University
of Electro-Communications, Chofu, Tokyo 182-8585, Japan
azhangqin@scut.edu.cn, bwjh278877417@126.com, chuangwj@scut.edu.cn, daoyama@mce.uec.ac.jp
Keywords: Swirl; Cell Orientation Control; Eccentric Influence
Abstract.The adjustment of cell position and orientation is important in cell micromanipulation of bioengineering, which directly affects the efficiency and success ratio of the micromanipulation.
Introduction Cell orientation is a significant factor in experimental study of biological engineering.
A higher fertilization, developmental and pregnancy rate of oocytes were produced from oocytes that had been injected with the polar body(PB) at 11 o’clock[1]; orientation of the first polar body does not affect clinical outcome at 6 or 12 o’clock[2];and a significantly higher proportion of zygotes with PN1 and PN4 types of pronuclear orientation underwent early cleavage and developed into grade I embryos compared with other types[3].Also cell orientation may affect the mechanical performance of the organization formed by cells.
In healing ligaments and tendons, the orientation of cells affects the organization of the collagenous matrix produced by the cells, orienting cells along the longitudinal direction of healing ligaments and tendons may lead to the production of aligned collagenous matrix that more closely represents the uninjured state and enhance the mechanical properties of healing ligaments and tendons consequently[4].
Fleming, Orientation of the first polar body of the oocyte at 6 or 12 o'clock during ICSI does not affect clinical outcome, Hum.
Introduction Cell orientation is a significant factor in experimental study of biological engineering.
A higher fertilization, developmental and pregnancy rate of oocytes were produced from oocytes that had been injected with the polar body(PB) at 11 o’clock[1]; orientation of the first polar body does not affect clinical outcome at 6 or 12 o’clock[2];and a significantly higher proportion of zygotes with PN1 and PN4 types of pronuclear orientation underwent early cleavage and developed into grade I embryos compared with other types[3].Also cell orientation may affect the mechanical performance of the organization formed by cells.
In healing ligaments and tendons, the orientation of cells affects the organization of the collagenous matrix produced by the cells, orienting cells along the longitudinal direction of healing ligaments and tendons may lead to the production of aligned collagenous matrix that more closely represents the uninjured state and enhance the mechanical properties of healing ligaments and tendons consequently[4].
Fleming, Orientation of the first polar body of the oocyte at 6 or 12 o'clock during ICSI does not affect clinical outcome, Hum.
Online since: October 2007
Authors: H. Khorsand, Ali Shokuhfar, M. Alizadeh
The mechanical properties of sintered timing wheel were
investigated as a function of sintered density.
One characteristic feature of powder-manufactured (P/M) components is the porosity, governing the mechanical properties of the component.
The influence of porosity distribution on the mechanical properties is investigated.
Nonlinear analyses add an extra factor, the number of load increments, which affect both accuracy and expense.
Tensile properties of Fe-Mo-Ni steels[1].
One characteristic feature of powder-manufactured (P/M) components is the porosity, governing the mechanical properties of the component.
The influence of porosity distribution on the mechanical properties is investigated.
Nonlinear analyses add an extra factor, the number of load increments, which affect both accuracy and expense.
Tensile properties of Fe-Mo-Ni steels[1].