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Online since: August 2016
Authors: Marek Sadilek, Dana Stančeková, Jana Petru, Tomáš Zlámal, Miroslav Janota, Dušan Steklac, Marek Kordik
Provides experimental measurement and report of uniformities on the surface of bearing rings - called oval and cradle, metallographic analysis of rings, as well as an analysis of various processes affecting the formation of deformations.
At the moment we try to find a cause of the origin of the above-mentioned deformation after quenching and, thus, via an analysis of suppliers up to an analysis of the production process itself. [4,5,6] An analysis of the origin of deformations The term of deformation of bearing steel contains a range of impact factors that may be analysed via factors listed in the Figure 1. [7-10] Figure 1 Factors affecting deformations of bearing rings An analysis of processes affecting deformations The audit of suppliers of forgings has been conducted as a part of a solution of the problem.
Even conditions of materials after soft annealing affects total conditions of tautness.
This article was funded by the University of Zilina project OPVaV-2009/2.2/04-SORO number (26220220101) - “Intelligent system for nondestructive technologies on evaluation for the functional properties of components of X-ray diffraction ".
Kuzdak, Identification of residual stress and structure properties in surface and subsurface layers of austenitic steel designed for nuclear energetics, EAN 2015 - 53rd Conference on Experimental Stress Analysis. (2015), pp 36-40, [15] J.
At the moment we try to find a cause of the origin of the above-mentioned deformation after quenching and, thus, via an analysis of suppliers up to an analysis of the production process itself. [4,5,6] An analysis of the origin of deformations The term of deformation of bearing steel contains a range of impact factors that may be analysed via factors listed in the Figure 1. [7-10] Figure 1 Factors affecting deformations of bearing rings An analysis of processes affecting deformations The audit of suppliers of forgings has been conducted as a part of a solution of the problem.
Even conditions of materials after soft annealing affects total conditions of tautness.
This article was funded by the University of Zilina project OPVaV-2009/2.2/04-SORO number (26220220101) - “Intelligent system for nondestructive technologies on evaluation for the functional properties of components of X-ray diffraction ".
Kuzdak, Identification of residual stress and structure properties in surface and subsurface layers of austenitic steel designed for nuclear energetics, EAN 2015 - 53rd Conference on Experimental Stress Analysis. (2015), pp 36-40, [15] J.
Online since: January 2012
Authors: Asif Israr, Atiq Ur Rehman, Musharaf Abbas
This misalignment produce in the vessel’s structure is because of girth weld that is evident in most of the fabrication of such type of structures apart from other factors which is beyond the scope of this study.
Such discontinuities affect overall stress pattern in the affected area that can be visualized in the local increase in the stress magnitude.
The vessel section is modeled in Auto Mechanical Desktop and is then imported in ANSYS in ASIC Desktop (.sat) format.
Design factor of safety on yield and tensile are 1.4 and 1.65 respectively, and the constraint on factor of safety on yield and tensile are 1.3 and 1.5 respectively.
In this regard, the designer must not be content to understand the properties of the construction materials to be used in the vessel.
Such discontinuities affect overall stress pattern in the affected area that can be visualized in the local increase in the stress magnitude.
The vessel section is modeled in Auto Mechanical Desktop and is then imported in ANSYS in ASIC Desktop (.sat) format.
Design factor of safety on yield and tensile are 1.4 and 1.65 respectively, and the constraint on factor of safety on yield and tensile are 1.3 and 1.5 respectively.
In this regard, the designer must not be content to understand the properties of the construction materials to be used in the vessel.
Online since: July 2011
Authors: Zhao Jing Ming, Yang Zheng Xun, Hwang Kyu Hong, Park Sang Hwan
The quality of these refractories applied on IGCC should be a key factor that affects the entire cost of electric power production.
The properties after drying and sintering are compared to find a suitable additive for chromia-contained castables. 2.
Sintered specimens were given physical properties test and microstructures were also observed by a scanning electron microscope (SEM).
Table.1 The properties of ultrafine alumina and fumed silica.
This phase have an important role that it improves the mechanical strength of the refractory.
The properties after drying and sintering are compared to find a suitable additive for chromia-contained castables. 2.
Sintered specimens were given physical properties test and microstructures were also observed by a scanning electron microscope (SEM).
Table.1 The properties of ultrafine alumina and fumed silica.
This phase have an important role that it improves the mechanical strength of the refractory.
Online since: August 2014
Authors: Jamal Fajoui, Guy Oum, Winfried Kockelmann, Joe Kelleher, David Gloaguen, Vincent Legrand
In this context, the control of metallic materials properties is essential to develop any structure.
Hence, the cell structure affects the walls.
The tensor sesh is evaluated based on elastic properties of the matrix and the mechanical predicted behaviour will be too stiff.
This tensor depends on active systems, elastic properties, stress rate and deformation history of each phase.
The elastic properties are considered as isotropic (μ = 70 GPa and ν = 0.3).
Hence, the cell structure affects the walls.
The tensor sesh is evaluated based on elastic properties of the matrix and the mechanical predicted behaviour will be too stiff.
This tensor depends on active systems, elastic properties, stress rate and deformation history of each phase.
The elastic properties are considered as isotropic (μ = 70 GPa and ν = 0.3).
Online since: September 2024
Authors: Oleksandr Holii, Sergii Vavreniuk, Viktoriya Pasternak, Artem Ruban
Our proposed discrete element method is as follows:
,
(1)
,
where: mass of elements (mm); t – time (с); і – spherical element index; linear velocity vector; moment of inertia; external factors (force) affecting the elements i through the interaction of contacts with elements j; k – the total number of spheres that interact with each other with elements і; external torque, which is directly connected through the interaction of the contacts of the spherical elements і and j; falling moment (top to bottom).
These properties are important for understanding and predicting heat transfer. 3.
Huliieva, Prediction of the structural properties of powder materials by 3D modeling methods.
Ruban, Investigation of the properties of powder materials using computer modeling.
Huliieva, Prediction of the structural properties of powder materials by 3D modeling methods.
These properties are important for understanding and predicting heat transfer. 3.
Huliieva, Prediction of the structural properties of powder materials by 3D modeling methods.
Ruban, Investigation of the properties of powder materials using computer modeling.
Huliieva, Prediction of the structural properties of powder materials by 3D modeling methods.
Online since: May 2012
Authors: Bin Shi, Lei Gao, Yu Xian Shao, Chun Liu
The temperature change must affect the engineering properties of the soil and lead to a series of geological disasters[9-11].
With the decrease of the thickness of the bounding water film, the soil-water interaction and the structure of the soil also changes, leading to the variation of the physical and mechanical properties of soil[3].
The clay particle content, the hydrophilic mineral content and organic matter are the key factors that influence the Atterberg limitss of clayey soils [25].
Impact and key issues of urban heat island effect to soil engineering properties.
Thermal properties of soils as affected by density and water content.
With the decrease of the thickness of the bounding water film, the soil-water interaction and the structure of the soil also changes, leading to the variation of the physical and mechanical properties of soil[3].
The clay particle content, the hydrophilic mineral content and organic matter are the key factors that influence the Atterberg limitss of clayey soils [25].
Impact and key issues of urban heat island effect to soil engineering properties.
Thermal properties of soils as affected by density and water content.
Online since: January 2021
Authors: A. Zarei-Hanzaki, A.H. Shafieizad, A. Zinsaz-Borujerdi, S. Ghodrat, M. Karam-Abian
The Oliver and Pharr method is the most common ones,[4] in which the mechanical properties can be evaluated directly from indentation load-displacement curves.
To calculate the mechanical properties of each phase, the indentations were properly located on individual phases.
The difference in macroscopic stress-strain curves might arise from many factors that exceed the scope of this work.
Thus, if the method is modified by applying these factors, a more accurate prediction will be achieved. 4.
Wang, Effects of indenter angle and friction on the mechanical properties of film materials, Results in Physics 6 (2016) 509-514
To calculate the mechanical properties of each phase, the indentations were properly located on individual phases.
The difference in macroscopic stress-strain curves might arise from many factors that exceed the scope of this work.
Thus, if the method is modified by applying these factors, a more accurate prediction will be achieved. 4.
Wang, Effects of indenter angle and friction on the mechanical properties of film materials, Results in Physics 6 (2016) 509-514
Online since: December 2013
Authors: Lian Guang Wang, Jia Yang, Ni Zhang
The performance of the interface between fiber reinforced polymer (FRP) and concrete is one of the key factors to affect the behaviors of RC beams strengthened with FRP plate.
The mechanical properties and failure mechanism of strengthened member are closely related to bond performance of FRP-concrete interface.
At present, many domestic and foreign experts and scholars put forward the method which used FRP sheets or plates to strengthen structures and research on its debonding failure modes and mechanical behavior [1-7].
The interfacial shear stresses are the main factors impacting on the failure modes and working mechanism of RC beams strengthened with FRP plate.
Under external loading, the relative slip occurred on the interface between FRP plate and concrete causes the redistribution of stress and then influences mechanical behavior of component.
The mechanical properties and failure mechanism of strengthened member are closely related to bond performance of FRP-concrete interface.
At present, many domestic and foreign experts and scholars put forward the method which used FRP sheets or plates to strengthen structures and research on its debonding failure modes and mechanical behavior [1-7].
The interfacial shear stresses are the main factors impacting on the failure modes and working mechanism of RC beams strengthened with FRP plate.
Under external loading, the relative slip occurred on the interface between FRP plate and concrete causes the redistribution of stress and then influences mechanical behavior of component.
Online since: August 2005
Authors: A. Witvrouw, A. Mehta
High-quality films
with excellent electrical and mechanical properties can be obtained at low temperature (#450ºC)
and high deposition rates (~100 nm/min).
Table 1: Comparison of mechanical properties and melting points of Si, Ge [19] and Al.
Other Material Properties.
The layer should also keep its good electrical and mechanical properties over the lifetime of the device.
In addition, a new generation of circuitry can easily replace the older one without affecting the MEMS on top of it.
Table 1: Comparison of mechanical properties and melting points of Si, Ge [19] and Al.
Other Material Properties.
The layer should also keep its good electrical and mechanical properties over the lifetime of the device.
In addition, a new generation of circuitry can easily replace the older one without affecting the MEMS on top of it.
Online since: August 2008
Authors: José Carlos Bressiani, Motozo Hayakawa, Carlos A. Xavier Santos
Mechanical properties were studied: hardness were measured
by a Vickers indentor using a load of 2.000g for 10s.
Figure 7 - Density of the samples heated in different temperatures. 4,33 4,53 4,73 4,93 5,13 1400 1500 1600 1700 1800 Temperature (C) Density (g/cm3) 80 85 90 95 100 %Mechanical Properties As matrix parameters were used the mechanical properties of the same YTZP heated at 1450ºC for 2h.
Mechanical properties as hardness and toughness increase as nitrogen level present in the phase also increases.
Crystalline phase was investigated and mechanical properties was measured at room temperature.
Factors affecting mechanical properties of silicon oxynitride ceramics.
Figure 7 - Density of the samples heated in different temperatures. 4,33 4,53 4,73 4,93 5,13 1400 1500 1600 1700 1800 Temperature (C) Density (g/cm3) 80 85 90 95 100 %Mechanical Properties As matrix parameters were used the mechanical properties of the same YTZP heated at 1450ºC for 2h.
Mechanical properties as hardness and toughness increase as nitrogen level present in the phase also increases.
Crystalline phase was investigated and mechanical properties was measured at room temperature.
Factors affecting mechanical properties of silicon oxynitride ceramics.