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Online since: May 2020
Authors: V.Z. Abdrakhimov, E. S. Abdrakhimova, A.K. Kairakbaev
Physico-mechanical properties of the fired ceramic bricks are shown in Table 3.
As known, R2 is normalized to 0 to 1 in calculations; if it is close to 1, the regression equation handles the actual data better, and the factors affect the results to a greater degree.
If it is close to zero, the regression equation is weak at describing the actual data, and the factors barely affect the results.
The researchers have managed to produce ceramic bricks of high physico-mechanical properties from the tailings of ferrous and nonferrous metallurgy without using convention natural materials.
Loryuenyong, et al., Effects of recycled glass substitution on the physical and mechanical properties of clay bricks, Waste Management. 29.10 (2009) 2717-2721
As known, R2 is normalized to 0 to 1 in calculations; if it is close to 1, the regression equation handles the actual data better, and the factors affect the results to a greater degree.
If it is close to zero, the regression equation is weak at describing the actual data, and the factors barely affect the results.
The researchers have managed to produce ceramic bricks of high physico-mechanical properties from the tailings of ferrous and nonferrous metallurgy without using convention natural materials.
Loryuenyong, et al., Effects of recycled glass substitution on the physical and mechanical properties of clay bricks, Waste Management. 29.10 (2009) 2717-2721
Online since: September 2014
Authors: R. Fernandez-Martinez, R. Hernandez, J. Ibarretxe, Pello Jimbert, M. Iturrondobeitia, T. Guraya-Díez
Modeling of the Mechanical Properties of Carbon-black Reinforced Rubber Blends by Machine Learning Techniques
R.
Coop., 48270, Markina-Xemein -Spain aroberto.fernandezm@ehu.es, brhernandez@leartik.com, cjulen.ibarretxe@ehu.es, dpello.jimbert@ehu.es, emaider.iturrondobeitia@ehu.es, fteresa.guraya@ehu.es Keywords: Computational modeling; Design of experiments; Mechanical properties; Rubber blend.
Mastering the relationship between the final mechanical properties of carbon black reinforced rubber blends and their composition is a key advantage for an efficient design of the composition of the blend.
Here, a design of experiments (DoE) was used to optimize the value of the three response variables (output variables) by changing the values of the factors (input variables) that affect the response.
Once the DoE was defined, the rubber blends were prepared and their mechanical properties measured by several standard tests.
Coop., 48270, Markina-Xemein -Spain aroberto.fernandezm@ehu.es, brhernandez@leartik.com, cjulen.ibarretxe@ehu.es, dpello.jimbert@ehu.es, emaider.iturrondobeitia@ehu.es, fteresa.guraya@ehu.es Keywords: Computational modeling; Design of experiments; Mechanical properties; Rubber blend.
Mastering the relationship between the final mechanical properties of carbon black reinforced rubber blends and their composition is a key advantage for an efficient design of the composition of the blend.
Here, a design of experiments (DoE) was used to optimize the value of the three response variables (output variables) by changing the values of the factors (input variables) that affect the response.
Once the DoE was defined, the rubber blends were prepared and their mechanical properties measured by several standard tests.
Online since: September 2014
Authors: Shou Hua Chen, Qin Qin Wang, Wei Da Tang
This article listed in the mechanical equipment reliability prediction method starting from the physical properties of the product, give full consideration to the use of the expected environment, abrasion and other degradation, mechanical product failure rate is established.
The combination of these factors makes engineering design parameters can be used to describe the design of the equipment used in known environment life, and the ratio of failure in the design life and patterns.
But at a lower stage, mechanical equipment reliability issues more easily, because affecting the reliability of the design can get a clear understanding of details.
To expect the service life of mechanical components, by considering the specific wear, erosion, fatigue failure mechanism of degradation and the use of lubrication, the possible existence of pollutants, the contact between the loading surface, sliding speed, contact area, surface hardness and material properties[3].
The reliability analysis should include verification that sufficient pressure will be applied to affect a good seal
The combination of these factors makes engineering design parameters can be used to describe the design of the equipment used in known environment life, and the ratio of failure in the design life and patterns.
But at a lower stage, mechanical equipment reliability issues more easily, because affecting the reliability of the design can get a clear understanding of details.
To expect the service life of mechanical components, by considering the specific wear, erosion, fatigue failure mechanism of degradation and the use of lubrication, the possible existence of pollutants, the contact between the loading surface, sliding speed, contact area, surface hardness and material properties[3].
The reliability analysis should include verification that sufficient pressure will be applied to affect a good seal
Online since: December 2016
Authors: Aina Bernava, Maris Manins, Skaidrite Reihmane, Juris Bitenieks
For this technology the information about technological factors (temperature, pressure etc.) on properties of nonwovens is necessary.
In our case it is confirmed: for sample with the highest water penetration, mechanical properties are better, than for samples with lower ones, meanwhile the amount of hemp fibres did not affect water penetration of NW.
The content of polypropylene fibres in the web is the main factor influencing the strength and elongation properties of investigated NW.
Hui, Critical factors on manufacturing processes of natural fibre composites, Comp.
Quaiyyum, Mechanical properties of polypropylene composites: A review, J.
In our case it is confirmed: for sample with the highest water penetration, mechanical properties are better, than for samples with lower ones, meanwhile the amount of hemp fibres did not affect water penetration of NW.
The content of polypropylene fibres in the web is the main factor influencing the strength and elongation properties of investigated NW.
Hui, Critical factors on manufacturing processes of natural fibre composites, Comp.
Quaiyyum, Mechanical properties of polypropylene composites: A review, J.
Online since: November 2013
Authors: Tie Neng Guo, Ting Yu Wu, Xiao Lei Song
Identification of the dynamic properties of mechanical joints
TieNeng Guo, TingYu Wua, XiaoLei Song
Advanced Manufacturing Technology-The Key Laboratory of Beijing Municipality,
Beijing University of Technology, Beijing, 100124, China
adidiaowutingyu@126.com
Keywords: mechanical joints; parameters identification; frequency response function; subtraction term frequency selection method
Abstract: The frequency response functions (FRFs) are frequently used to identify dynamic properties of the mechanical joints.
So identification formula of noise resistance is one of the important factors affecting its application.
Celic: The influence of the coordinate reduction on the identification of the joint dynamic properties.
Wang: Joint dynamic properties identification with partially measured frequency response function.
Mechanical Systems and Signal Processing 27 (2012), p. 499–512
So identification formula of noise resistance is one of the important factors affecting its application.
Celic: The influence of the coordinate reduction on the identification of the joint dynamic properties.
Wang: Joint dynamic properties identification with partially measured frequency response function.
Mechanical Systems and Signal Processing 27 (2012), p. 499–512
Online since: September 2011
Authors: Zhi Xin Jia, Hong Lin Li
The Two Import Properties of Plastic and Their Influences on the Injected Parts
The physical properties of polymer are the determining factors the design engineering must use in selecting a polymer with those properties which most nearly meet the requirements of a product.
The mechanical and physical properties of polymers are greatly influenced by the degree of crystalline.
Mechanical properties perpendicular to the molecular orientation are decreased and the shrinkage is increased.
The degree and the direction of the orientation are important factors which influence the properties of the injected part.
Hence, the two factors must be controlled to obtain high quality parts.
The mechanical and physical properties of polymers are greatly influenced by the degree of crystalline.
Mechanical properties perpendicular to the molecular orientation are decreased and the shrinkage is increased.
The degree and the direction of the orientation are important factors which influence the properties of the injected part.
Hence, the two factors must be controlled to obtain high quality parts.
Online since: January 2013
Authors: Chun Lin Zhang, Nian Su Hu, Wen Yang, Jian Mei Wang, Min Li, Cheng Ma
The Research on the Key Factor Affect the Precision in Stress
Analysis for the Rotor of Steam Turbine
Chunlin Zhang, Niansu Hu, Wen Yang, Jianmei Wang, Min Li, Cheng Ma
Wuhan University, Hubei Province, China
School of Power and Mechanical Engineering of Wuhan University
linlitiankong@163.com
Keywords: Surface Heat Transfer coefficient; FEA; Flow State; Thermal Stress; Steam Turbine
Abstract.
This paper concerned on the research of the surface heat transfer coefficient, which is the key factor affect the precision in thermal stress analysis.
The factors affect the precision in strength analysis mainly contain the model, the mesh and the boundary conditions.
This paper has a research on the surface heat transfer coefficient, which is the key factor affect the precision in thermal stress analysis [3,4].
Fig. 3 The transient temperature field of rotor Fig. 4 The stress field of rotor The Numerical Calculation of the Surface Heat Transfer Coefficient in the Steam Seal The surface heat transfer coefficient is the most uncertain factor in the boundary conditions, and is the key factor affect the precision in stress analysis.
This paper concerned on the research of the surface heat transfer coefficient, which is the key factor affect the precision in thermal stress analysis.
The factors affect the precision in strength analysis mainly contain the model, the mesh and the boundary conditions.
This paper has a research on the surface heat transfer coefficient, which is the key factor affect the precision in thermal stress analysis [3,4].
Fig. 3 The transient temperature field of rotor Fig. 4 The stress field of rotor The Numerical Calculation of the Surface Heat Transfer Coefficient in the Steam Seal The surface heat transfer coefficient is the most uncertain factor in the boundary conditions, and is the key factor affect the precision in stress analysis.
Online since: June 2012
Authors: Kai Ming Wu, Xue Li Tao, Xiang Liang Wan, Zheng Hai Xia
It is well known that welding heat input will greatly affect the microstructure and mechanical properties in the heat-affected zone (HAZ) of steels.
It is generally accepted that the formation of acicular ferrite is one of the most important factors for improving toughness in CGHAZ in high strength steels [7].
Results Microstructural characterization and mechanical properties of the base steel.
Table 2 shows the mechanical properties of as-rolled base plates.
Mechanical properties of CGHAZ with different heat inputs.
It is generally accepted that the formation of acicular ferrite is one of the most important factors for improving toughness in CGHAZ in high strength steels [7].
Results Microstructural characterization and mechanical properties of the base steel.
Table 2 shows the mechanical properties of as-rolled base plates.
Mechanical properties of CGHAZ with different heat inputs.
Online since: April 2015
Authors: Martin Keppert, Pavel Reiterman
Three commercial lime-cement plasters were subjected to real Central European environment and their mechanical properties were monitored in time.
The results proved expected positive influence of lime carbonation on mechanical properties in short-time horizon while longer environmental exposition reduced them.
Experimental program Three types of commercial cement-lime based plasters were selected for present experimental program; their mechanical properties were monitored in course of three years.
Initial period of specimen exposure was positively affected by the continuing progress of mechanical and other physical properties, where was observed increased resistance to action of weather.
Assessment of the durability of concrete from its permeation properties: a review.
The results proved expected positive influence of lime carbonation on mechanical properties in short-time horizon while longer environmental exposition reduced them.
Experimental program Three types of commercial cement-lime based plasters were selected for present experimental program; their mechanical properties were monitored in course of three years.
Initial period of specimen exposure was positively affected by the continuing progress of mechanical and other physical properties, where was observed increased resistance to action of weather.
Assessment of the durability of concrete from its permeation properties: a review.
Online since: February 2011
Authors: Yan Wang, Guang Fu Liu, Shou Xu Song, Ping He
On the basis of the energy factors concepts, the paper analyzes the extraction process and energy effectiveness model of energy factors.
Introduction Nowadays, energy and environment problems which are caused by the wide use of air-conditioner are greatly affecting the living environment and the sustained development of human beings.
It is the design control mechanism and the control elements which reflect the energy properties in the design process, whose expressions are characteristic number, parameters, indicators etc.
Energy factors extraction.
Three key problems about extraction of energy factor and establishing the energy effectiveness patterns will be studied in detail: the first is the quantitative expression of the influence range of energy properties to the energy elements.
Introduction Nowadays, energy and environment problems which are caused by the wide use of air-conditioner are greatly affecting the living environment and the sustained development of human beings.
It is the design control mechanism and the control elements which reflect the energy properties in the design process, whose expressions are characteristic number, parameters, indicators etc.
Energy factors extraction.
Three key problems about extraction of energy factor and establishing the energy effectiveness patterns will be studied in detail: the first is the quantitative expression of the influence range of energy properties to the energy elements.