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Online since: February 2014
Authors: Dan Lu Song, Fan Jie Luo
The evaluation of the probabilistic sensitivities showed that: the elastic modulus is the most important factor affecting the column reliability, and the reliability of column can be improved by decreasing the dispersion of the property parameters of the material.
As the main influence component of groove milling machine’s stiffness, which can directly affects the performance of the rotor slot milling machine.
According to the stress strength interference theory, the limit state function is defined as follow[4]: (1) Using Z (X) <0 as failure criterion, the random input vector X= (X1, X2, X3,... , Xn) is a characterization for analysis model in all uncertain factors, such as geometry, material parameters, load probability distribution.
(2) The sensitivity analysis of the wheel groove milling machine column's maximum deformation showed that the elastic modulus is the most influential factor on the column's deformation, and the loads on the y-axis comes the second, and the column height is last.
American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. 1999, 382: 7~12 [4] Rocco C M Moreno J A.
As the main influence component of groove milling machine’s stiffness, which can directly affects the performance of the rotor slot milling machine.
According to the stress strength interference theory, the limit state function is defined as follow[4]: (1) Using Z (X) <0 as failure criterion, the random input vector X= (X1, X2, X3,... , Xn) is a characterization for analysis model in all uncertain factors, such as geometry, material parameters, load probability distribution.
(2) The sensitivity analysis of the wheel groove milling machine column's maximum deformation showed that the elastic modulus is the most influential factor on the column's deformation, and the loads on the y-axis comes the second, and the column height is last.
American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. 1999, 382: 7~12 [4] Rocco C M Moreno J A.
Online since: January 2014
Authors: Deng Feng Wang, Hong Liang Dong, Tian Ze Shi, You Kun Zhang
Fig.1 Rigid-elastic coupling multi- Fig.2 Test of tire property Fig.3 Tire slip characteristic
body dynamic vehicle model measurement
Tire performance is one of important influence factors on vehicle handling stability.
Mechanical properties of the tire are measured and identified on the plat-plate tire test bed in State Key Laboratory of Automotive Simulation and Control as shown in figure.2.
Disassemble the suspension parts and measure the spring and damper properties in State Key Laboratory of Automotive NVH and Safety Technology.
DOE Optimization of Suspension Parameters Determination of Test Factors.
So the modified suspension parameter match can improve the full vehicle steady state steering characteristic without affecting other characteristics.
Mechanical properties of the tire are measured and identified on the plat-plate tire test bed in State Key Laboratory of Automotive Simulation and Control as shown in figure.2.
Disassemble the suspension parts and measure the spring and damper properties in State Key Laboratory of Automotive NVH and Safety Technology.
DOE Optimization of Suspension Parameters Determination of Test Factors.
So the modified suspension parameter match can improve the full vehicle steady state steering characteristic without affecting other characteristics.
Online since: February 2008
Authors: Xin Gui Zhou, Bo Yun Huang, Hai Jiao Yu, Jian Gao Yang, Ze Lan Huang
The
mechanical properties were investigated using three-point bending test and single-edge notched beam
test.
The mechanical properties of composites reinforced by carbon fibrous deposited with the SiC interlayers for 1hour (h) are proximately 7~10 times higher, demonstrating that the mechanical properties of composites can be increased through the fiber coating.
Thereby, it affects the mechanical properties of the composites.
It can be found in Table 1 that the mechanical properties of the composites with interlayers depend on the thickness of the interlayers.
The Cf/SiC composites with thicker CVD SiC interlayers therefore have inferior mechanical properties.
The mechanical properties of composites reinforced by carbon fibrous deposited with the SiC interlayers for 1hour (h) are proximately 7~10 times higher, demonstrating that the mechanical properties of composites can be increased through the fiber coating.
Thereby, it affects the mechanical properties of the composites.
It can be found in Table 1 that the mechanical properties of the composites with interlayers depend on the thickness of the interlayers.
The Cf/SiC composites with thicker CVD SiC interlayers therefore have inferior mechanical properties.
Online since: September 2011
Authors: Wu Zhao, Dan Huang
It would be inevitably affect equipment running quality and increase the frequency of maintenance or replacement of the parts.
Dynamic load behavior of the rolling mill rack included the load magnitude and load property.
The frame structure and shape of the rack was shown as Fig. 5(a), and material properties main parameters were shown as Table 1.
Generally, safety factor of the rack is not less than 10.
Under this requirement, the safety factor of the rack was Where nj was rack safety factor, ng was roller safety factor, σb was rack strength limit, σs was rack material yield limit.
Dynamic load behavior of the rolling mill rack included the load magnitude and load property.
The frame structure and shape of the rack was shown as Fig. 5(a), and material properties main parameters were shown as Table 1.
Generally, safety factor of the rack is not less than 10.
Under this requirement, the safety factor of the rack was Where nj was rack safety factor, ng was roller safety factor, σb was rack strength limit, σs was rack material yield limit.
Online since: August 2015
Authors: Victor Fedorov, Alexey Yakovlev, Arseniy Berezner, Dmitry Fedotov, Maxim Kombarov, Tatiana Pluzhnikova
These properties are improved after annealing [1].
Transition from a metastable equilibrium to a more equilibrium state occurs under the influence of various destabilizing factors (radiation, mechanical and/or thermal influences, chemical treating) in MG.
Time-temperature diagrams make practical implementation of the predetermined complex of mechanical properties possible.
Wang, Bulk amorphous FC20 (Fe–C–Si) alloys with small amounts of B and their crystallized structure and mechanical properties, Acta Mater. 48 (2000) 1383-1395
Molotilov, Structure and mechanical properties of amorphous alloys, M .: Metallurgy, 1992, p 208
Transition from a metastable equilibrium to a more equilibrium state occurs under the influence of various destabilizing factors (radiation, mechanical and/or thermal influences, chemical treating) in MG.
Time-temperature diagrams make practical implementation of the predetermined complex of mechanical properties possible.
Wang, Bulk amorphous FC20 (Fe–C–Si) alloys with small amounts of B and their crystallized structure and mechanical properties, Acta Mater. 48 (2000) 1383-1395
Molotilov, Structure and mechanical properties of amorphous alloys, M .: Metallurgy, 1992, p 208
Online since: May 2020
Authors: Marián Kubliha, Soňa Rusnáková, Milan Žaludek, Přemysl Strážnický, Ondrej Bošák, Petr Gross
The results are statistically processed and document the possibilities of adjusting the mechanical properties of composites with sheep wool.
This research aims to utilize not only sheep wool but also fur from other animals for widespread use without adversely affecting nature.
Effect of Sheep Wool Fibers on Thermal Insulation and Mechanical Properties of Cement-Based Composites.
Effect of Sheep Wool Fibers on Thermal Insulation and Mechanical Properties of Cement-Based Composites.
A Review: Natural Fiber Composites Selection in View of Mechanical, Light Weight, and Economic Properties.
This research aims to utilize not only sheep wool but also fur from other animals for widespread use without adversely affecting nature.
Effect of Sheep Wool Fibers on Thermal Insulation and Mechanical Properties of Cement-Based Composites.
Effect of Sheep Wool Fibers on Thermal Insulation and Mechanical Properties of Cement-Based Composites.
A Review: Natural Fiber Composites Selection in View of Mechanical, Light Weight, and Economic Properties.
Online since: April 2013
Authors: Yu Qin Li, Wei Feng He, Xiang Fan Nie, Liu Cheng Zhou, Yan Chai
In special, LSP is an innovative surface treatment technique[1] applied to improve the mechanical properties and surface microstructures of metallic components.
LSP is very effective in improving metallic materials properties, such as fatigue, corrosion and wear resistance [2,3].
It is significative to improve the properties, especially fatigue resistance and wear resistance ability.
They have discussed and found that increasing impacts is propitious to get deeper affected layer.
Work hardening and grain-refinement are the main factors improving the hardness.
LSP is very effective in improving metallic materials properties, such as fatigue, corrosion and wear resistance [2,3].
It is significative to improve the properties, especially fatigue resistance and wear resistance ability.
They have discussed and found that increasing impacts is propitious to get deeper affected layer.
Work hardening and grain-refinement are the main factors improving the hardness.
Online since: May 2020
Authors: V. Atroshenko, R. Nikiforov, O.V. Murugova, I.M. Gatiyatullin
The article is devoted to the modeling of structural-phase transformations during automatic MIG welding of high-strength steel X80 in a welded seam and the heat affected zone in the ANSYS / Mechanical package.
These factors determine the low values of HAZ cold brittleness indices, which necessitated studies of the microstructure and kinetics of austenite transformation upon cooling from a temperature of 1300˚С [5].
References [1] Stolyarov V I et al 2003 Weldability of high-strength steels for gas pipes of large diameter Problems of ferrous metallurgy and materials science 3 pp 39-47 [2] Efimenko L A et al 2009 Weldability study of high-strength pipe steels of strength category X80 Welding production 2 pp 3-7 [3] Cheprasov D.A. et al 2012 Thermodeformational welding cycles and structural-phase transformations in low alloy steels of the bainitic class Polzunovsky reading 1 pp 45-53 [4] Naumenko A A et al 2012 Formation of the structure and complex of properties of cold-resistant steel for pipes of strength class X80 during thermomechanical processing Abstract, diss. ... cand. tech.
(Moscow: Bauman moscow state technical university) p 24 [5] Velichko A A 2014 The role of thermal parameters of welding in the formation of the morphology of the microstructure and the properties of the heat-affected zone in the production of longitudinal pipes Diss ... cand. tech. sciences. 05.16.01.
Darmadi 2014 Residual stress analysis of pipeline girth weld joints: Dissertation submitted for the Degree of Doctor of Philosophy thesis, School of Mechanical, Materials and Mechatronic Engineering University of Wollongong p 289 [8] GOST ISO 3183-2012 Steel pipes for pipelines.
These factors determine the low values of HAZ cold brittleness indices, which necessitated studies of the microstructure and kinetics of austenite transformation upon cooling from a temperature of 1300˚С [5].
References [1] Stolyarov V I et al 2003 Weldability of high-strength steels for gas pipes of large diameter Problems of ferrous metallurgy and materials science 3 pp 39-47 [2] Efimenko L A et al 2009 Weldability study of high-strength pipe steels of strength category X80 Welding production 2 pp 3-7 [3] Cheprasov D.A. et al 2012 Thermodeformational welding cycles and structural-phase transformations in low alloy steels of the bainitic class Polzunovsky reading 1 pp 45-53 [4] Naumenko A A et al 2012 Formation of the structure and complex of properties of cold-resistant steel for pipes of strength class X80 during thermomechanical processing Abstract, diss. ... cand. tech.
(Moscow: Bauman moscow state technical university) p 24 [5] Velichko A A 2014 The role of thermal parameters of welding in the formation of the morphology of the microstructure and the properties of the heat-affected zone in the production of longitudinal pipes Diss ... cand. tech. sciences. 05.16.01.
Darmadi 2014 Residual stress analysis of pipeline girth weld joints: Dissertation submitted for the Degree of Doctor of Philosophy thesis, School of Mechanical, Materials and Mechatronic Engineering University of Wollongong p 289 [8] GOST ISO 3183-2012 Steel pipes for pipelines.
Online since: January 2011
Authors: Christos C. Chamis
The inputs to each module are constituent material properties, processing variables, loading and environmental conditions and probabilistic variables.
The second module is the multi-factor interaction model (MFIM) which includes the effects of different factors in the response [5].
The inputs to each model are: constituent material properties and environment loading conditions (ICAN); the individual factors that affect the specific property and their respective exponents; all the values for the inputs to ICAN and to MFIM, as well as the mean value and the scatter band of each participating variable.
The outputs are specific laminate properties, specific response and cumulative distribution function, and probabilistic sensitivity factors.
The fatigue curve shapes for the factors power 2.0 is shown in Fig. 4.
The second module is the multi-factor interaction model (MFIM) which includes the effects of different factors in the response [5].
The inputs to each model are: constituent material properties and environment loading conditions (ICAN); the individual factors that affect the specific property and their respective exponents; all the values for the inputs to ICAN and to MFIM, as well as the mean value and the scatter band of each participating variable.
The outputs are specific laminate properties, specific response and cumulative distribution function, and probabilistic sensitivity factors.
The fatigue curve shapes for the factors power 2.0 is shown in Fig. 4.
Online since: November 2023
Authors: Dheeraj Kumar, Rajesh Kumar Porwal
Composites are being used since decades and imparting excellent properties comparatively.
Quality of Surface roughness is most affected by gap voltage value and amount of discharge current. 35 8 Graphene Al2O3-SiCw ……….. …………… Mechanical & Electrical Properties Composites have been successfully fabricated.
The following factors can be listed: 1.
Ignition current & Voltage has been found to be more significant in affecting the MRR while pulse-on time found to be least dominant factor. 5.
Pradeep, Investigation of mechanical properties on AA7075 matrix composites reinforced with tungsten disulfide particles, Materials Today: Proceedings Available online 4 March 2021, In Press
Quality of Surface roughness is most affected by gap voltage value and amount of discharge current. 35 8 Graphene Al2O3-SiCw ……….. …………… Mechanical & Electrical Properties Composites have been successfully fabricated.
The following factors can be listed: 1.
Ignition current & Voltage has been found to be more significant in affecting the MRR while pulse-on time found to be least dominant factor. 5.
Pradeep, Investigation of mechanical properties on AA7075 matrix composites reinforced with tungsten disulfide particles, Materials Today: Proceedings Available online 4 March 2021, In Press