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Online since: July 2017
Authors: Eleanora Anatolievna Petrakovskaya, Lyudmila Vasilevna Kashkina, Olesya Pavlovna Stebeleva, Tatyana Yuryevna Yemelyanova
Changes in the properties of brown Kansk-Achinsk coal after exposure to microwaves have been studied using scanning electron microscopy (SEM) and electron magnetic resonance (EMR).
Microwave drying affected grindability of coal in samples 2 and 3.
EMR method applied to study the effect of microwave drying on coal makes it possible to investigate the relationship of structure and electron properties of the coal matter.
In [10] the investigation of physical-mechanical (elastic) properties of coals disclosed their affinity with properties of glasslike solid bodies.
The value of g-factor for R1 and R2 is bigger than the g-factor when the electron position is fixed (g-factor = 2.002322).
Microwave drying affected grindability of coal in samples 2 and 3.
EMR method applied to study the effect of microwave drying on coal makes it possible to investigate the relationship of structure and electron properties of the coal matter.
In [10] the investigation of physical-mechanical (elastic) properties of coals disclosed their affinity with properties of glasslike solid bodies.
The value of g-factor for R1 and R2 is bigger than the g-factor when the electron position is fixed (g-factor = 2.002322).
Online since: October 2023
Authors: Rostislav Drochytka, Karolína Hudec Jakubíková
Among the most important parameters monitored for the binders used are chemical resistance, resistance to mechanical abrasion, adhesion properties, and the ability to penetrate the structure of the sleeve used.
In terms of properties, the price was also an important factor here and the availability of the secondary raw materials themselves, the pre-treatment of the filler was intended and evaluated under laboratory conditions.
Subsequently, the masses were divided into five categories to define their properties compared to the applicability of the reference mass.
With poor design, polymerization throughout the cross-section and the resulting CIPP liners do not have adequate mechanical properties.
The Mechanical Properties of Hgh Strength Reinforced Cured-in-Place Pipe (CIPP) Liner Composites for Urban Water Infrastructure Rehabilitation [online]
In terms of properties, the price was also an important factor here and the availability of the secondary raw materials themselves, the pre-treatment of the filler was intended and evaluated under laboratory conditions.
Subsequently, the masses were divided into five categories to define their properties compared to the applicability of the reference mass.
With poor design, polymerization throughout the cross-section and the resulting CIPP liners do not have adequate mechanical properties.
The Mechanical Properties of Hgh Strength Reinforced Cured-in-Place Pipe (CIPP) Liner Composites for Urban Water Infrastructure Rehabilitation [online]
Online since: May 2012
Authors: Jun Hong Zhou, Di Wu, Shun Hua Zhou
Results show that the buoyancy caused by grouting pressure is the dominating factor to bring about segments uplift, thus the relationship between the soil properties and the anti-uplift characteristics, the relation curves of soil modulus and the maximum amount of floating upward are deduced [1].
Analyze the factors affecting the uplift of shield tunnel lining through finite element method(FEM), such as the physic-mechanical properties of stratum material, and the properties of grouting material, the paper indicates that the method of using the grouting materials which have a property of low early strength and large fluidity is good for control the segments upward moving(however, the segments uplift during the construction and the later settlement should be considered) [2].
Zhengnan Shen analyze the reason of segments uplift through the factor of the physic-mechanical of stratum material, grouting and the shield posture, methods of controlling the segments uplift are provided [4].
After considering the two factors of size difference in tenon and deviation in joint handhole, can get the allowed maximum amount of slab staggering for structure allowed in Ningbo metro line 1 is 4 mm.
For N, the conclusion in this paper is that the number of the float stable ring from shield tail is 14, however, the value of N is affected by many factors(geological conditions and the construction parameters), if these factors change, float stable ring should be fitted again.
Analyze the factors affecting the uplift of shield tunnel lining through finite element method(FEM), such as the physic-mechanical properties of stratum material, and the properties of grouting material, the paper indicates that the method of using the grouting materials which have a property of low early strength and large fluidity is good for control the segments upward moving(however, the segments uplift during the construction and the later settlement should be considered) [2].
Zhengnan Shen analyze the reason of segments uplift through the factor of the physic-mechanical of stratum material, grouting and the shield posture, methods of controlling the segments uplift are provided [4].
After considering the two factors of size difference in tenon and deviation in joint handhole, can get the allowed maximum amount of slab staggering for structure allowed in Ningbo metro line 1 is 4 mm.
For N, the conclusion in this paper is that the number of the float stable ring from shield tail is 14, however, the value of N is affected by many factors(geological conditions and the construction parameters), if these factors change, float stable ring should be fitted again.
Online since: January 2018
Authors: Peter Olegovich Rusinov, Zhesfina Blednova
We demonstrated the functional-mechanical properties of the "steel-TiNiCo-B4C-Co" composition with preliminary thermomechanical treatment, which showed an increase in the durability of rotor-screw propellers with TiNiCo-B4C-Co surface composite layers.
The destruction of propellers is affected by a number of technological factors (pores, inclusions, residual stresses, etc.) and operational ones: (corrosion, fatigue, mechanical damage and other factors).
These alloys have unique strength and plastic properties.
Rusinov: Mechanical and Tribological Properties of the Composition “Steel-nanostructured Surface Layer of a Material with Shape Memory Effect Based TiNiCu”.
Stepanenko: Mechanical and tribological properties of “substrate-material” multifunctional composite with shape memory effect.
The destruction of propellers is affected by a number of technological factors (pores, inclusions, residual stresses, etc.) and operational ones: (corrosion, fatigue, mechanical damage and other factors).
These alloys have unique strength and plastic properties.
Rusinov: Mechanical and Tribological Properties of the Composition “Steel-nanostructured Surface Layer of a Material with Shape Memory Effect Based TiNiCu”.
Stepanenko: Mechanical and tribological properties of “substrate-material” multifunctional composite with shape memory effect.
Online since: July 2015
Authors: Junaidah Jai, Istikamah Subuki, Rafeqah Raslan, Fitrah Rabani Abdul Aziz
Essential oils (EOs) widely known to possess various beneficial properties which are vital in numerous fields such as fragrance, flavour and medical.
Although microencapsulation technology can trap oily components stably to fibers, a lots of affecting factor needs to be considered in order to have high performance microcapsules which can serve specific application.
This kind of textile are being developed with the aim of providing new properties of fabrics with added value.
Hence, current study focuses on the investigation of mosquito repellency properties of EOs that are more safe and effective [28].
Pei: Preparation and Properties of Olive Oil Microcapsules, Journal of Fiber Bioengineering & Informatics, Vol.5(1) (2012), p. 67-76 [28] R.
Although microencapsulation technology can trap oily components stably to fibers, a lots of affecting factor needs to be considered in order to have high performance microcapsules which can serve specific application.
This kind of textile are being developed with the aim of providing new properties of fabrics with added value.
Hence, current study focuses on the investigation of mosquito repellency properties of EOs that are more safe and effective [28].
Pei: Preparation and Properties of Olive Oil Microcapsules, Journal of Fiber Bioengineering & Informatics, Vol.5(1) (2012), p. 67-76 [28] R.
Online since: February 2012
Authors: Zhong Jin Wang, Yao Wang, Tie Jun Gao, Zhan Jun Liu
Influences of buckling and wrinkling as well as viscous medium properties in necking process on the forming process is analyzed by finite element method.
The viscous medium with mechanical properties meeting formula (1) was divided into solid element.
The finite element analysis model Table 1 Mechanical properties of 1Cr18Ni9Ti yield strength σs (MPa) tensile strength σb (MPa) elastic modulus E (GPa) percentage elongation δ (%) strength factor K (MPa) hardening exponent n 206 539 200 40 980 0.34 Deformation Process Analysis The finite element analysis results of the changes of the B-B section geometrical shape of the tube blank and the pressure field of viscous medium in the viscous-medium outer-pressure necking process are shown in Fig. 3.
a) Before buckling b) Buckling and wrinkling c) Wrinkles were eliminated Fig. 3.The geometrical shape of the tube blank and the pressure field distribution of viscous medium in the necking process(m=0.3) The Influence Of Medium Properties On The Necking Process 1) The influence of medium properties on the buckling process The non-uniform pressure distribution of viscous medium is an important affecting factor on delaying the buckling of the tube blank and eliminating wrinkles, while it is mainly attributed to the rate-sensitivity, so viscous media with different rate-sensitivity are chosen to perform finite element analysis of the necking process.
Journal mechanical engineering science.
The viscous medium with mechanical properties meeting formula (1) was divided into solid element.
The finite element analysis model Table 1 Mechanical properties of 1Cr18Ni9Ti yield strength σs (MPa) tensile strength σb (MPa) elastic modulus E (GPa) percentage elongation δ (%) strength factor K (MPa) hardening exponent n 206 539 200 40 980 0.34 Deformation Process Analysis The finite element analysis results of the changes of the B-B section geometrical shape of the tube blank and the pressure field of viscous medium in the viscous-medium outer-pressure necking process are shown in Fig. 3.
a) Before buckling b) Buckling and wrinkling c) Wrinkles were eliminated Fig. 3.The geometrical shape of the tube blank and the pressure field distribution of viscous medium in the necking process(m=0.3) The Influence Of Medium Properties On The Necking Process 1) The influence of medium properties on the buckling process The non-uniform pressure distribution of viscous medium is an important affecting factor on delaying the buckling of the tube blank and eliminating wrinkles, while it is mainly attributed to the rate-sensitivity, so viscous media with different rate-sensitivity are chosen to perform finite element analysis of the necking process.
Journal mechanical engineering science.
Online since: June 2020
Authors: Václav Nežerka, Petr Bily, Josef Fladr, Vladimír Hrbek
The mechanical properties of a cementitious composite are strongly affected by interfacial transition zone (ITZ) between the matrix and the aggregates, mainly by its strength and thickness.
For each mixture, macroscopic mechanical properties (mainly compressive strength, elastic modulus and total porosity of concrete) were measured.
Rivard: Influence of supplementary cementitious materials on engineering properties of high strength concrete.
Hrbek: The effect of cement replacement and homogenization procedure on mechanical properties of high-performance concrete Magazine of Civil Engineering 8/84 (2018)
Schutter: Microstructural characterization of ITZ in blended cement concretes and its relation to transport properties.
For each mixture, macroscopic mechanical properties (mainly compressive strength, elastic modulus and total porosity of concrete) were measured.
Rivard: Influence of supplementary cementitious materials on engineering properties of high strength concrete.
Hrbek: The effect of cement replacement and homogenization procedure on mechanical properties of high-performance concrete Magazine of Civil Engineering 8/84 (2018)
Schutter: Microstructural characterization of ITZ in blended cement concretes and its relation to transport properties.
Online since: October 2017
Authors: Kanwal Jit Singh, Jatinder Kapoor, Inderpreet Singh Ahuja
Higher level of every input factors gives higher MRR for all materials [2, 5].
USM of glass and porcelain material conclude that TWR is affected by various input factors such as; tool material, operation time, work material thickness, work material properties, tool size, tool cross section area, abrasive type, grit, static load and power rating [60].
No Author (s) Work material Input machining pa factors Response and Optimized Results Results or conclusion 1.
Some essential properties are shown in Table 2 [57,58,59,62].
Glass – Nature, Structure, and Properties.
USM of glass and porcelain material conclude that TWR is affected by various input factors such as; tool material, operation time, work material thickness, work material properties, tool size, tool cross section area, abrasive type, grit, static load and power rating [60].
No Author (s) Work material Input machining pa factors Response and Optimized Results Results or conclusion 1.
Some essential properties are shown in Table 2 [57,58,59,62].
Glass – Nature, Structure, and Properties.
Online since: February 2015
Authors: Rudolf Martonka, Vítězslav Fliegel
Experimental testing of its properties investigates the correlation between its characteristic and comfort.
Main factors that affect the quality of sitting are: the quality of a seat squab and a back-rest, the presence of a static and a dynamic load.
These are factors that are harmful to human organism [1].
Evidently, stabilization of mechanical properties of PU foam under loading happens.
Martonka, Measuring properties of car seats and its innovation, Doctoral thesis, Technical University of Liberec, Liberec, 2009
Main factors that affect the quality of sitting are: the quality of a seat squab and a back-rest, the presence of a static and a dynamic load.
These are factors that are harmful to human organism [1].
Evidently, stabilization of mechanical properties of PU foam under loading happens.
Martonka, Measuring properties of car seats and its innovation, Doctoral thesis, Technical University of Liberec, Liberec, 2009
Online since: July 2013
Authors: Xiao Cui Yang, Fang Liu, Xiang Yi Luo, Hong Yu Lin, Jun Ping Xiao
Zhao and Wu systematically investigated the electronic and mechanical properties of LaN using the density-functional theory [4].A previous self-consistent augmented plane wave band structure calculation by Hasegawa [5] shows a band overlap of 9 mRy.
Results and discussions Structural properties.
Electronic properties.
Two different factors determine the response of materials to pressure: (a) changes in nearest-neighbor distance, and (b) changes in symmetry.
To see how these two factors affect the electronic properties, we present band structures and partial density of states (DOS) of LaN at 60 GPa, as shown in Fig. 2.
Results and discussions Structural properties.
Electronic properties.
Two different factors determine the response of materials to pressure: (a) changes in nearest-neighbor distance, and (b) changes in symmetry.
To see how these two factors affect the electronic properties, we present band structures and partial density of states (DOS) of LaN at 60 GPa, as shown in Fig. 2.