Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: January 2021
Authors: Alexey Ogoltcov, Artem V. Mitrofanov
The obtained results allowed, with minimum costs, to prepare the previously developed integrated computer model (STAN 2000) for calculating the structure and mechanical properties.
Introduction The first papers on the effect of hydrogen on the change in the physical and mechanical properties of pipe steels during their operation appeared more than 100 years ago [1-3] and are actively continuing to the present time [6].
Along with silicon, this is also the cheapest option for alloying steel to provide strong properties. 3.
To exclude the alloying of chromium and nickel, because the content of these elements in the basic chemical composition did not lead to significant properties of the structure and properties. 4.
No less important factors that crushed the structure and made it more durable and viscous are the decrease in size and increase in the density of Nb (C, N) particles.
Introduction The first papers on the effect of hydrogen on the change in the physical and mechanical properties of pipe steels during their operation appeared more than 100 years ago [1-3] and are actively continuing to the present time [6].
Along with silicon, this is also the cheapest option for alloying steel to provide strong properties. 3.
To exclude the alloying of chromium and nickel, because the content of these elements in the basic chemical composition did not lead to significant properties of the structure and properties. 4.
No less important factors that crushed the structure and made it more durable and viscous are the decrease in size and increase in the density of Nb (C, N) particles.
Online since: September 2010
Authors: Islam Shyha, Sam Bradley, Stuart Dawson, Cornelius J. Pretorius, Sein Leung Soo, David K. Aspinwall
This comprised four factors,
three of which were at three levels and one at two levels and involved tool coating, cutting speed,
feed rate and machining environment.
The stack is then assembled and temporarily held together (mechanically) prior to hole reaming, although even here the disparity in workpiece mechanical properties (e.g. different elastic modulus, thermal expansion coefficient etc.), often presents an obstacle towards achieving the required tolerance level.
No analysis of interactions between the factors was performed.
• Feed rate and environment condition was also found to be prevalent factors in torque generation for the Ti and Al layers of the stack.
While feed rate had an overwhelming 72% influence in the former material, environment condition was the principal variable affecting torque with the latter
The stack is then assembled and temporarily held together (mechanically) prior to hole reaming, although even here the disparity in workpiece mechanical properties (e.g. different elastic modulus, thermal expansion coefficient etc.), often presents an obstacle towards achieving the required tolerance level.
No analysis of interactions between the factors was performed.
• Feed rate and environment condition was also found to be prevalent factors in torque generation for the Ti and Al layers of the stack.
While feed rate had an overwhelming 72% influence in the former material, environment condition was the principal variable affecting torque with the latter
Online since: December 2012
Authors: Xian Wu Hao, Shu Fen Zhou, Zi Qing Li
Its stiffness is reasonable or not will affect the accuracy of the internal force and deformation.
In practical engineering applications, the combination stiffness is more in line with the mechanical characteristic of the composite structure, and the calculation results are more closer to the actual situation.
The structure stiffness is reasonable or not will directly affect the accuracy of the internal force and deformation.
The properties of these two materials are not fully functioning.
But unified theory considers steel tubular and concrete as a unified unit to explore the impacts of composite material which is more in accordance with the mechanical characteristics of composite structure.
In practical engineering applications, the combination stiffness is more in line with the mechanical characteristic of the composite structure, and the calculation results are more closer to the actual situation.
The structure stiffness is reasonable or not will directly affect the accuracy of the internal force and deformation.
The properties of these two materials are not fully functioning.
But unified theory considers steel tubular and concrete as a unified unit to explore the impacts of composite material which is more in accordance with the mechanical characteristics of composite structure.
Online since: June 2020
Authors: Wan Chang Sun, Ya Gang Zhang, Min Ma, Sha Sha Tian, Yu Wan Liu, Yan Xiao, Rui Kai Xia
Results and Discussion
Influence of WC concentration on friction and wear properties.
There are many factors affecting the wear resistance of Co-WC composite coatings, such as the grain size of the matrix metal, the content and distribution of the WC particles, etc.
Wojciechowski, Influence of Cu coating of SiC particles on mechanical properties of Ni/SiC co-electrodeposited composites, Ceram.
Chen, Microstructure evolution and mechanical properties of in-situ bimodal TiC-Fe coatings prepared by reactive plasma spraying, Ceram.
Xu, Microstructure, friction, and wear properties of Ni-Al2O3-MoS2 composite coatings, Int.
There are many factors affecting the wear resistance of Co-WC composite coatings, such as the grain size of the matrix metal, the content and distribution of the WC particles, etc.
Wojciechowski, Influence of Cu coating of SiC particles on mechanical properties of Ni/SiC co-electrodeposited composites, Ceram.
Chen, Microstructure evolution and mechanical properties of in-situ bimodal TiC-Fe coatings prepared by reactive plasma spraying, Ceram.
Xu, Microstructure, friction, and wear properties of Ni-Al2O3-MoS2 composite coatings, Int.
Online since: June 2013
Authors: Abdulhameed Umar Abubakar, Khairul Salleh Baharudin
Fresh concrete properties.
There are a number of factors that might have contributed to this phenomenon, one of which is the water content.
Strength Properties.
This the author attributed to a number of factors which are: the aggregate to cement ratio became wide, and the cohensionless nature of bottom ash.
[9] Siddique, R. (2003) “Effect of fine aggregate replacement with Class F fly ash on the mechanical properties of concrete.”
There are a number of factors that might have contributed to this phenomenon, one of which is the water content.
Strength Properties.
This the author attributed to a number of factors which are: the aggregate to cement ratio became wide, and the cohensionless nature of bottom ash.
[9] Siddique, R. (2003) “Effect of fine aggregate replacement with Class F fly ash on the mechanical properties of concrete.”
Online since: May 2007
Authors: Xue Bin Zheng, Wei Wu, Soo Wohn Lee, Heng Ji, Zeng Yi
Many factors can influence the mechanical and
biocompatibilitive properties of plasma sprayed HA coatings.
Recently nanostructued bio-coatings attracted intense attentions due to their enhanced properties.
So in this paper the HA coatings made from powders with different size (microsized and nanosized) were characterized and their influence on coating property was studied. 2.
The crystallinity is one important factor to effect the thermal spraying HA coating's bio-property, it can be calculated from the area ratio A/Ap as a relative method, where A is the area of crystalline peaks on the XRD spectrum and Ap is the area of the starting powder.
According to the equation above, factors affecting the melt ratio are Sc and Rrm.
Recently nanostructued bio-coatings attracted intense attentions due to their enhanced properties.
So in this paper the HA coatings made from powders with different size (microsized and nanosized) were characterized and their influence on coating property was studied. 2.
The crystallinity is one important factor to effect the thermal spraying HA coating's bio-property, it can be calculated from the area ratio A/Ap as a relative method, where A is the area of crystalline peaks on the XRD spectrum and Ap is the area of the starting powder.
According to the equation above, factors affecting the melt ratio are Sc and Rrm.
Online since: July 2020
Authors: Eung Ryul Baek, Faris Arief Mawardi, Ghozali Suprobo, Nokeun Park
The DSST can be a potential method for producing a high fraction of αm, which can be thermally decomposed into a fine lamellar α/β, introducing a Ti-6Al-4V alloy with superior mechanical properties.
Thus, the mechanical properties of Ti-6Al-4V alloy with the morphology of αm is predicted to be superior since it has a characteristic combination between high strength of α′ martensite and high toughness of α diffusion.
The small fraction of the αm and the non-linear trend of its fraction must be affected by a factor other than a cooling rate.
However, the effect of these white particles on the mechanical property of Ti-6Al-4V will be explained elsewhere.
Lütjering, Influence of processing on microstructure and mechanical properties of (α+β) titanium alloys, Mater.
Thus, the mechanical properties of Ti-6Al-4V alloy with the morphology of αm is predicted to be superior since it has a characteristic combination between high strength of α′ martensite and high toughness of α diffusion.
The small fraction of the αm and the non-linear trend of its fraction must be affected by a factor other than a cooling rate.
However, the effect of these white particles on the mechanical property of Ti-6Al-4V will be explained elsewhere.
Lütjering, Influence of processing on microstructure and mechanical properties of (α+β) titanium alloys, Mater.
Online since: August 2007
Authors: William H. Peter, G.Y. Wang, R.A. Buchanan, C.T. Liu, M.L. Morrison, C.R. Brooks, Peter K. Liaw
Many factors could be involved to cause the range in fatigue behavior, such as the mean
stress, specimen geometry, testing environment, temperature, cyclic frequency, residual stress,
quality of the glassy phase, and the surface condition.
In fact, any processing that changes the static mechanical properties or microstructure is also likely to affect the fatigue behavior of materials.
A good understanding of the most influential parameters affecting the fatigue endurance limits of BMGs is key to becoming knowledgeable about the fatigue behavior and fatigue degradation mechanics of BMGs.
However, the lifetime for a given surface finish over the fatigue-endurance limits was not affected.
Love: Properties of Metallic Surfaces, The Institute of Metals, London, (1953), p. 161
In fact, any processing that changes the static mechanical properties or microstructure is also likely to affect the fatigue behavior of materials.
A good understanding of the most influential parameters affecting the fatigue endurance limits of BMGs is key to becoming knowledgeable about the fatigue behavior and fatigue degradation mechanics of BMGs.
However, the lifetime for a given surface finish over the fatigue-endurance limits was not affected.
Love: Properties of Metallic Surfaces, The Institute of Metals, London, (1953), p. 161
Online since: October 2011
Authors: Liang Zhao, Meng Su, Yun Chen Miao
With the enhancement of the motion velocity of robots, dynamics factors exert a growing influence on the robot performance.
The affecting factors include: manufacturing errors and assembly errors of mechanical components; mechanism errors in the joint motion transmission; errors of control algorithms; resolution of sensors and encoders; forward and inverse solutions’ calculation errors in kinematics and dynamics etc.
(2) Dynamic error model.As each component of robot has different material and geometric properties, the actual robot system is not an absolute rigid system.
Therefore, rigidity analysis is also an important factor in the accuracy analysis.
Structural error mainly affects the z direction position error of the SCARA manipulator end-executor and the x and y direction orientation error, transmission error mainly affects its x and y direction position error and the z direction orientation error.
The affecting factors include: manufacturing errors and assembly errors of mechanical components; mechanism errors in the joint motion transmission; errors of control algorithms; resolution of sensors and encoders; forward and inverse solutions’ calculation errors in kinematics and dynamics etc.
(2) Dynamic error model.As each component of robot has different material and geometric properties, the actual robot system is not an absolute rigid system.
Therefore, rigidity analysis is also an important factor in the accuracy analysis.
Structural error mainly affects the z direction position error of the SCARA manipulator end-executor and the x and y direction orientation error, transmission error mainly affects its x and y direction position error and the z direction orientation error.
Online since: May 2010
Authors: Ying Peng, Zhao Yang, Jin Ling Hou, Jian Rong Xu, Shan Tang Liu, Fu Cheng Ming
Which factors in an enterprise have a good self-organizing adaptive potential, which factors will tend
to maintain the original mode?
Review of the Literature Holland defines the complex adaptive system (CAS), "The system is composed of agents affecting mutually which are described by rules".
It is a set of material and physical properties.
According to the path analysis, we can build path model of structural equation affecting the telecom change.
Implications and Conclusion According to this study, organizational mood, leadership, knowledge are the factors which affect the telecommunications organizational adaptability.
Review of the Literature Holland defines the complex adaptive system (CAS), "The system is composed of agents affecting mutually which are described by rules".
It is a set of material and physical properties.
According to the path analysis, we can build path model of structural equation affecting the telecom change.
Implications and Conclusion According to this study, organizational mood, leadership, knowledge are the factors which affect the telecommunications organizational adaptability.