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Online since: September 2021
Authors: Svetlana Yu. Khashirova, Azamat L. Slonov, Azamat A. Zhansitov, Zhanna I. Kurdanova, Ismel V. Musov
It was found that the addition of a melt viscosity modifier to a carbon-filled composite helps to maintain the linear dimensions of the fiber filler particles, thereby increasing the physical and mechanical properties of the material.
The physical and mechanical properties of such materials are much lower, due to the limited length of the fibers, on which the properties of the material directly depend, as well as the impossibility of regulating their orientation in the polymer matrix during production.
Considering the above, the study of the mechanisms and conditions affecting the change and preservation of the length of carbon fibers in reinforced composites is an important area.
Despite the slight difference, this difference significantly affects the properties of the material.
Increasing or maintaining higher values of the residual length of CF in the composite had a positive effect on the physical and mechanical properties of the composites.
The physical and mechanical properties of such materials are much lower, due to the limited length of the fibers, on which the properties of the material directly depend, as well as the impossibility of regulating their orientation in the polymer matrix during production.
Considering the above, the study of the mechanisms and conditions affecting the change and preservation of the length of carbon fibers in reinforced composites is an important area.
Despite the slight difference, this difference significantly affects the properties of the material.
Increasing or maintaining higher values of the residual length of CF in the composite had a positive effect on the physical and mechanical properties of the composites.
Online since: November 2005
Authors: S.Y. Chang, Jine Sung Jung, Keun Bong Yoo, Gee Wook Song, Min Sung Kang, M.T. Kim
Degradation of the gas turbine hot-gas-path components, the 1
st stage blades and vanes,
serviced for a period was evaluated by measuring the mechanical properties.
The mechanical properties of the serviced blades were degraded by about 30% comparing with those of unused ones.
These factors might be affected by service conditions [5].
Degradation on the blades were tested by measuring the mechanical properties and the microstructural changes.
Results and discussion Blades. 1) Mechanical properties.
The mechanical properties of the serviced blades were degraded by about 30% comparing with those of unused ones.
These factors might be affected by service conditions [5].
Degradation on the blades were tested by measuring the mechanical properties and the microstructural changes.
Results and discussion Blades. 1) Mechanical properties.
Online since: September 2015
Authors: Cho Pei Jiang, Zong Han Huang
Advantages of the ECAP are to generate uniform microstructures and improvement of mechanical properties.
Affect factor is the angle of outer corners in plastic zone control.
Mechanical Properties.
The obtained mechanical properties of each case as list in Table 1 are used as material library.
STRUCTURE AND MECHANICAL PROPERTIES ULTRA-FINE GRAINED TITANIUM. in 13th International Research Conference TMT. 2009
Affect factor is the angle of outer corners in plastic zone control.
Mechanical Properties.
The obtained mechanical properties of each case as list in Table 1 are used as material library.
STRUCTURE AND MECHANICAL PROPERTIES ULTRA-FINE GRAINED TITANIUM. in 13th International Research Conference TMT. 2009
Online since: July 2011
Authors: Ji Tao Du, Can Huang, Qi Jun Chen, Cheng Zhan Chen
As one of the best ways to lightweight car-white-body, tailor rolling blanks (TRB) are affected by various factors when produced, such as friction, rotational speed of working rolls, adjusting speed of rollers gap, rolling force, roller stiffness, etc.
With board mechanical properties and continuous change, TRB have a better follow-up forming ability and adaptable ability.
The rolling process is mainly affected by the contact friction, rotational speed of work rolls, adjusting speed of rolls, rolling force and roll stiffness and other factors, So, in this paper, various tests were simulated by using orthogonal design method and Deform-3D software.
Flexible rolling of TRB is affected by various factors, while in this paper, numbers of tests considering friction, rotational speed of working rolls, adjusting speed of roll gap will be shown using orthogonal test, three levels each factor and the interaction of two factors are considered.
But for the interaction factors, it is not easy to observe as two columns each factor.
With board mechanical properties and continuous change, TRB have a better follow-up forming ability and adaptable ability.
The rolling process is mainly affected by the contact friction, rotational speed of work rolls, adjusting speed of rolls, rolling force and roll stiffness and other factors, So, in this paper, various tests were simulated by using orthogonal design method and Deform-3D software.
Flexible rolling of TRB is affected by various factors, while in this paper, numbers of tests considering friction, rotational speed of working rolls, adjusting speed of roll gap will be shown using orthogonal test, three levels each factor and the interaction of two factors are considered.
But for the interaction factors, it is not easy to observe as two columns each factor.
Online since: December 2013
Authors: Chao Cheng Chang, Jian Cheng Lai, Cheung Hwa Hsu
The results show that the dry conditions lead to stronger friction effects and thus larger friction factors.
Metal parts may be produced by a metal forming process since its high productivity, high material utilization and good mechanical properties makes the technology suitable for mass production.
Two friction factors for the workpiece-die interface, 0.02 and 0.5, and five friction factors for the workpiece-punch interface, 0.02, 0.1, 0.2, 0.3, 0.4 and 0.5, were tested in simulations.
Table 2 lists the estimated friction factors at different strokes for each lubricating condition.
The dry conditions led to stronger friction effects and thus larger friction factors.
Metal parts may be produced by a metal forming process since its high productivity, high material utilization and good mechanical properties makes the technology suitable for mass production.
Two friction factors for the workpiece-die interface, 0.02 and 0.5, and five friction factors for the workpiece-punch interface, 0.02, 0.1, 0.2, 0.3, 0.4 and 0.5, were tested in simulations.
Table 2 lists the estimated friction factors at different strokes for each lubricating condition.
The dry conditions led to stronger friction effects and thus larger friction factors.
Online since: February 2015
Authors: Khairur Rijal Jamaludin, Sufizar Ahmad, N.I. Mad Rosip, Fazimah Mat Noor
Effects Of Sintering Temperature On The Properties Of Stainless Steel Foam
FAZIMAH Mat Noor1, 2, a*, N.
Every single processing step has a significance effects on the final properties of the metal foams and needs for proper development in order to obtain defect-free structures with optimum properties.
Conclusion Sintering temperature is one of the factors that affects the pore morphology and foams strength.
The mechanical properties of porous stainless steel can be tailored by selection of an appropriate processing parameters including the sintering temperature.
Upadhyaya, Sintered Metallic and Ceramic Materials: Preparation, Properties and Applications.
Every single processing step has a significance effects on the final properties of the metal foams and needs for proper development in order to obtain defect-free structures with optimum properties.
Conclusion Sintering temperature is one of the factors that affects the pore morphology and foams strength.
The mechanical properties of porous stainless steel can be tailored by selection of an appropriate processing parameters including the sintering temperature.
Upadhyaya, Sintered Metallic and Ceramic Materials: Preparation, Properties and Applications.
Online since: March 2008
Authors: Shi Chun Yang, Wen Hui Li, Sheng Qiang Yang
By analyzing effect factors and their rules, theoretic basis is settled for
experimental research and industrial application.
The stress status, micro-rigidity, surface layer structure are improved by elastic and plastic deformation, so the physical-mechanical properties are improved.
n α M N L θ θ y x O1 O M Fig.3 Model diagram of motion analysis on the wheel hub surface For the characteristics of planet motion, it is: ( ) αθ θ += Nn /1 (1) So the equation of motion locus to M is: ( )[ ] ( )[ ]θαθ θ αθ Nn rLy Nn rLx /1sinsin /1coscos +++= +++= (2) As θ is equal to 2πNt,the velocity component in XOY is: ( ) ( )[ ] ( ) ( )[ ]NtNn NnNrNtNLy NtNn NnNrNtNLx π α πππ π α πππ 2/1cos/12)2cos(2 2/1sin/12)2sin(2 ++ ++ = ++ +− −= & & (3) With the composition formula of velocity, the velocity of M is: ( ) 2/1 )2cos()/1(2)/1( 2 2 22 nt NnLrNnrLNv πα π + ++++= (4) Analysis of Main Factors From above equations, main factors affecting finishing effects are N, n/N, L, α, r.
By analyzing effect factors and their rules, theoretic basis is settled for experimental research and industrial application.
Yang: China Mechanical Engineering Vol.10 (1999), pp.626-629 (In Chinese) [4] S.Q.
The stress status, micro-rigidity, surface layer structure are improved by elastic and plastic deformation, so the physical-mechanical properties are improved.
n α M N L θ θ y x O1 O M Fig.3 Model diagram of motion analysis on the wheel hub surface For the characteristics of planet motion, it is: ( ) αθ θ += Nn /1 (1) So the equation of motion locus to M is: ( )[ ] ( )[ ]θαθ θ αθ Nn rLy Nn rLx /1sinsin /1coscos +++= +++= (2) As θ is equal to 2πNt,the velocity component in XOY is: ( ) ( )[ ] ( ) ( )[ ]NtNn NnNrNtNLy NtNn NnNrNtNLx π α πππ π α πππ 2/1cos/12)2cos(2 2/1sin/12)2sin(2 ++ ++ = ++ +− −= & & (3) With the composition formula of velocity, the velocity of M is: ( ) 2/1 )2cos()/1(2)/1( 2 2 22 nt NnLrNnrLNv πα π + ++++= (4) Analysis of Main Factors From above equations, main factors affecting finishing effects are N, n/N, L, α, r.
By analyzing effect factors and their rules, theoretic basis is settled for experimental research and industrial application.
Yang: China Mechanical Engineering Vol.10 (1999), pp.626-629 (In Chinese) [4] S.Q.
Online since: August 2016
Authors: Dragoş Buzdugan, Cosmin Codrean, Viorel Aurel Şerban
Introduction
Attractive jointing properties like high strength and good resistance to corrosion mean that high-temperature brazing has been widely adopted by component makers for complex-shaped stainless steel parts.
Outside the control factors, the results can be influenced by a number of other disturbing factors.
The main effect plot shows how the control factors positively and significantly affects the response factor.
If the parallelism difference is greater, then are interactions between the factors.
Mathematical modeling through full factorial experiment showed that the main factors influencing the mechanical shear strength during brazing are time and brazing current.
Outside the control factors, the results can be influenced by a number of other disturbing factors.
The main effect plot shows how the control factors positively and significantly affects the response factor.
If the parallelism difference is greater, then are interactions between the factors.
Mathematical modeling through full factorial experiment showed that the main factors influencing the mechanical shear strength during brazing are time and brazing current.
Online since: August 2022
Authors: Indriana Kartini, Laela Mukaromah, Nuryono Nuryono, Muhammad Wahyu Arif Wibowo, Anfi'na Ilma Yunita
Several attempts have been conducted to improve the mechanical properties of mineral trioxide aggregate (MTA), including the addition of various nanoparticle materials such as silver and titania.
One of the main problems in synthesizing MTA from natural materials is its mechanical properties, particularly the low tensile strength.
The mechanical properties of MTA are influenced by several factors like water to powder ratio, liquid or solid type, mixing and placement techniques, compaction pressure, and temperature [6], [7].
Nevertheless, the study of nanoparticle’s addition to the mechanical properties of cement-like MTA prepared from natural materials has not been reported.
The effect of AgNP and TiO2 addition on other mechanical properties of cement-like MTA would be interesting to investigate.
One of the main problems in synthesizing MTA from natural materials is its mechanical properties, particularly the low tensile strength.
The mechanical properties of MTA are influenced by several factors like water to powder ratio, liquid or solid type, mixing and placement techniques, compaction pressure, and temperature [6], [7].
Nevertheless, the study of nanoparticle’s addition to the mechanical properties of cement-like MTA prepared from natural materials has not been reported.
The effect of AgNP and TiO2 addition on other mechanical properties of cement-like MTA would be interesting to investigate.
Online since: February 2011
Authors: Shi Jin Zhang, Yu Qiang Wu, Yan Li Wang
Although unalloyed titanium is soft and does not exhibit a notably high strength, its alloys, such as Ti-6Al-4V (chemical composition shown in Table 1) demonstrate remarkable mechanical properties, including high strength-to-weight ratios, low densities, excellent corrosion resistance, excellent erosion resistance and low modulus of elasticity (shown in Table 2).
Theoretically, cutting speed is a major factor which affects surface roughness.
Seems material thickness is a major factor which affects surface roughness.
Except that, orifice diameter to mixing tube diameter ratio has been fixed as 1/3 which has been verified by a lot of experiments and has been accepted extensively in abrasive water jet field, therefore, in order to simplify modeling process, there is no need to consider orifice diameter and mixing tube diameter as major affecting factors at the same time.
As showed above, water pressure, quality level index, nozzle combination and target material thickness are factors which affect surface roughness on both top side and bottom side
Theoretically, cutting speed is a major factor which affects surface roughness.
Seems material thickness is a major factor which affects surface roughness.
Except that, orifice diameter to mixing tube diameter ratio has been fixed as 1/3 which has been verified by a lot of experiments and has been accepted extensively in abrasive water jet field, therefore, in order to simplify modeling process, there is no need to consider orifice diameter and mixing tube diameter as major affecting factors at the same time.
As showed above, water pressure, quality level index, nozzle combination and target material thickness are factors which affect surface roughness on both top side and bottom side