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Online since: November 2013
Authors: Jan Michalicka, Ondrej Srba, Anna Hojna
Inside reactor vessels under the influence of neutron irradiation austenite stainless steel components undergo persistent changes of materials properties.
These effects result in changes of mechanical properties, namely in increase of strength and a loss of ductility.
Chemical composition and mechanical properties are shown in Table 1 and Table 2.
The test matrix allowed us to examine the impacts of two factors, strain rate and stress-strain state, on fracture character of the irradiated and non-irradiated steel in air and in water.
The IASCC is most likely affected also by hydrogen, the product of the water – steel chemical interaction, which enters into the material and affects the crack local growth under influence of applied load and plastic strain localized at channels interacting with grain boundaries and with interfaces of texture (formed by delta ferrite phase islands).
These effects result in changes of mechanical properties, namely in increase of strength and a loss of ductility.
Chemical composition and mechanical properties are shown in Table 1 and Table 2.
The test matrix allowed us to examine the impacts of two factors, strain rate and stress-strain state, on fracture character of the irradiated and non-irradiated steel in air and in water.
The IASCC is most likely affected also by hydrogen, the product of the water – steel chemical interaction, which enters into the material and affects the crack local growth under influence of applied load and plastic strain localized at channels interacting with grain boundaries and with interfaces of texture (formed by delta ferrite phase islands).
Online since: April 2013
Authors: Xian Zhong Yi, Jun Feng Zhang, Sheng Zong Jiang
Cuttings particle size and shape is directly related to rock properties, rock-breaking tool and other factors. (3) Partial enlarged picture in No.2 in Fig. 1-(c) shows the cuttings are bonded together, this will affect the migration speed of cuttings when returning to the ground, when it attaches to the shaft wall, it will affect the cuttings clean-up. (4) A chunk of large polygon rock exists in No.3 cuttings in Fig. 1-(d) should belong to the borehole wall after shedding; Particle shapes after screening are shown in Fig. 2.
Summary This paper studies sand characteristics and the powder mechanical behavior of Huan 127-Lian H2 horizontal well.
It indicates that size distribution of horizontal drilling cuttings is related with rock properties, and cuttings has a certain characteristic in certain probability distribution of the range.
Then to simulate and analyze fluid cutting carrying capacity of different tilt angle wellbore after Huan 127-Lian H2 well cuttings particle characteristics and mechanical behavior are determined.
Basic physical properties and settling behavior of sheet drilling cuttings, Beijing: Tsinghua University Postdoctoral Research Report, 2006.
Summary This paper studies sand characteristics and the powder mechanical behavior of Huan 127-Lian H2 horizontal well.
It indicates that size distribution of horizontal drilling cuttings is related with rock properties, and cuttings has a certain characteristic in certain probability distribution of the range.
Then to simulate and analyze fluid cutting carrying capacity of different tilt angle wellbore after Huan 127-Lian H2 well cuttings particle characteristics and mechanical behavior are determined.
Basic physical properties and settling behavior of sheet drilling cuttings, Beijing: Tsinghua University Postdoctoral Research Report, 2006.
Online since: November 2020
Authors: Ika Andryas, Hubban Nasution
Several properties of thermoplastic nylon are biological, physical, chemical and mechanical properties.
One thing to be considered in the act of denture was the denture based material mechanical properties.
Those properties are important because it would affect the denture usage duration [11].
Pressure transmission difference occurred due to several factors such as denture base materials and denture tooth selection [14].
The crystallization stages could affect the materials properties such as modulus of elasticity, hardness, stiffness, and etc [2,15].
One thing to be considered in the act of denture was the denture based material mechanical properties.
Those properties are important because it would affect the denture usage duration [11].
Pressure transmission difference occurred due to several factors such as denture base materials and denture tooth selection [14].
The crystallization stages could affect the materials properties such as modulus of elasticity, hardness, stiffness, and etc [2,15].
Online since: May 2022
Authors: Abdellah Bourih, Kaouther Bourih, Salah Madani, Wahid Kaddouri, Mohamed Masmoudi
The anisotropic pore morphology of lotus-type materials results in the anisotropy of their mechanical and physical properties.
The anisotropic pore morphology of lotus-type porous materials (LTPMs) results in the anisotropy of their mechanical and physical properties.
Their study supports the hypothesis that irregularity factors affect elastic and conductive properties similarly.
Relation of mechanical properties of powder metals and their porosity and the ultimate properties of porous metal-ceramic materials.
Determination of stress concentration factors in porous materials.
The anisotropic pore morphology of lotus-type porous materials (LTPMs) results in the anisotropy of their mechanical and physical properties.
Their study supports the hypothesis that irregularity factors affect elastic and conductive properties similarly.
Relation of mechanical properties of powder metals and their porosity and the ultimate properties of porous metal-ceramic materials.
Determination of stress concentration factors in porous materials.
Online since: October 2012
Authors: Jian Hua Huang, Hong Lu Xie, Yan Ling Wu, Lin Lu Zheng
The primary component of plantation fir was analyzed, fir scrap properties were tested in contrast to peeled fir.
Single-factor experiments were employed to discuss the influential factors liquefying plantation fir scrap by ionic liquids.
The ionic liquid is prepared according to previous literature[10]. 1- butyl-imidazole and 3-chloropropene were added in a three-mouth flask with mechanical agitation, the reaction was operated under the protection of nitrogen at 60 °C for 24 h, the intermediate, [BAIM][Cl] was synthesized after washing and drying.
In a 500mL three-mouth flask with mechanical agitation and spherical condenser tube, dried 60 mesh or so wood-flour and liquefaction agent [BAIM][Cl/AlCl3] were added according to a certain proportion(mass ratio of ionic liquid/wood-flour) , and then refluxed in an oil bath under the protection of nitrogen at schedule temperature, observed the phenomenon of reaction, when reached the scheduled time, stopped heating and stirring immediately.
In the first stage, liquid/wood ratio increased from 5 to 7, residue rates decreased rapidly, which affected significantly by liquid/wood ratio, it was favorable to increase liquid/wood ratio.
Single-factor experiments were employed to discuss the influential factors liquefying plantation fir scrap by ionic liquids.
The ionic liquid is prepared according to previous literature[10]. 1- butyl-imidazole and 3-chloropropene were added in a three-mouth flask with mechanical agitation, the reaction was operated under the protection of nitrogen at 60 °C for 24 h, the intermediate, [BAIM][Cl] was synthesized after washing and drying.
In a 500mL three-mouth flask with mechanical agitation and spherical condenser tube, dried 60 mesh or so wood-flour and liquefaction agent [BAIM][Cl/AlCl3] were added according to a certain proportion(mass ratio of ionic liquid/wood-flour) , and then refluxed in an oil bath under the protection of nitrogen at schedule temperature, observed the phenomenon of reaction, when reached the scheduled time, stopped heating and stirring immediately.
In the first stage, liquid/wood ratio increased from 5 to 7, residue rates decreased rapidly, which affected significantly by liquid/wood ratio, it was favorable to increase liquid/wood ratio.
Online since: August 2009
Authors: Chuan Zhen Huang, Jing Sun, Xing Hua Yang, Bao Kun Han
For TiN/3Y-TZP, the
matrix particle size is the key factor responsible for its low temperature degradation resistance.
The LTD severely affected the engineering application of Y-TZP, so it is urgent to improve the resistance of Y-TZP to LTD.
Recent research shows that the addition of TiN particles can effectively enhance the mechanical properties of 3Y-TZP (3mol% Y2O3 stabilized tetragonal zirconia polycrystals) at room temperature [7, 8], mainly due to the close thermal expansion coefficient and better compatibility between 3Y-TZP (10.4×10-6/°C) and TiN (9.3×10 -6/°C).
Lots of research indicates that the dispersing particle size has an important effect on the mechanical properties at room temperature, so it is necessary to research the effect of TiN particle size on the LTD of TiN/3Y-TZP. 3Y-TZP doped by 20wt% TiN, is taken as an example in the experiment.
(3) For TiN/3Y-TZP, the matrix grain size is the key factor responsible for the low temperature degradation resistance while the dispersing particle size has little effect on that in micron range.
The LTD severely affected the engineering application of Y-TZP, so it is urgent to improve the resistance of Y-TZP to LTD.
Recent research shows that the addition of TiN particles can effectively enhance the mechanical properties of 3Y-TZP (3mol% Y2O3 stabilized tetragonal zirconia polycrystals) at room temperature [7, 8], mainly due to the close thermal expansion coefficient and better compatibility between 3Y-TZP (10.4×10-6/°C) and TiN (9.3×10 -6/°C).
Lots of research indicates that the dispersing particle size has an important effect on the mechanical properties at room temperature, so it is necessary to research the effect of TiN particle size on the LTD of TiN/3Y-TZP. 3Y-TZP doped by 20wt% TiN, is taken as an example in the experiment.
(3) For TiN/3Y-TZP, the matrix grain size is the key factor responsible for the low temperature degradation resistance while the dispersing particle size has little effect on that in micron range.
Online since: October 2015
Authors: Michal Hatala, Róbert Čep, Jozef Zajac, Svetlana Radchenko, Waldemar Matysiak, Dariusz Bartkowski
The existing data primarily concerns the shaping of thin steel sheets for deep pressing, and there is frequently a lack of detailed information regarding their mechanical properties [5].
One of the factors limiting the process of edge eversion is the limit deformability of the work piece.
The limit coefficient value of deformation in this process depends on a number of factors with varying degrees of impact on the process course, primarily on the properties of the material used, the geometry of tools (in particular the geometry of the punch), the method of forming a hole, the changes in coefficient of friction and the initial diameter of the hole.
Mo V Ca 34GXA 0.060 0.022 - - - Bw11 - 0.03÷0.07 - - - 15HGMV max.0.10 0.01÷0.03 0.80÷1.00 0.20÷0.30 ~0.002 We began the study with the designation of the mechanical properties of the samples, for which we performed the static tensile tests on an Instron 4483 testing machine (Fig. 4).
Harnicarova, Measurement of physical properties of polyurethane plaster, Gradevinar 66/10 (2014) 899-907
One of the factors limiting the process of edge eversion is the limit deformability of the work piece.
The limit coefficient value of deformation in this process depends on a number of factors with varying degrees of impact on the process course, primarily on the properties of the material used, the geometry of tools (in particular the geometry of the punch), the method of forming a hole, the changes in coefficient of friction and the initial diameter of the hole.
Mo V Ca 34GXA 0.060 0.022 - - - Bw11 - 0.03÷0.07 - - - 15HGMV max.0.10 0.01÷0.03 0.80÷1.00 0.20÷0.30 ~0.002 We began the study with the designation of the mechanical properties of the samples, for which we performed the static tensile tests on an Instron 4483 testing machine (Fig. 4).
Harnicarova, Measurement of physical properties of polyurethane plaster, Gradevinar 66/10 (2014) 899-907
Online since: February 2018
Authors: Shao Peng Wu, Gang Liu, Yong Jie Xue, Hao Chen
Adding CRMs improve rheological properties of base binder.
Grinding the waste tire into the crumb rubber modifier (CRM) to modify the asphalt binder can improve the mechanical properties of asphalt pavement, meanwhile with a decrease to its driving noise [8-11].
The two main interaction mechanisms that affect the properties of CRM binder are swelling of rubber particle and its degradation (devulcanization and depolymerization) [17].
The WLF equation (WLF = William, Landel and Ferry) was used to calculate the shift factors to construct master curves [21,22].
Rheological Properties.
Grinding the waste tire into the crumb rubber modifier (CRM) to modify the asphalt binder can improve the mechanical properties of asphalt pavement, meanwhile with a decrease to its driving noise [8-11].
The two main interaction mechanisms that affect the properties of CRM binder are swelling of rubber particle and its degradation (devulcanization and depolymerization) [17].
The WLF equation (WLF = William, Landel and Ferry) was used to calculate the shift factors to construct master curves [21,22].
Rheological Properties.
Online since: August 2018
Authors: Hassan El-Hofy, Abdallah Abdelkawy, Mohab Hossam
Due to their superior mechanical properties, it is difficult to machine such materials by conventional methods.
The analysis of variance technique (ANOVA) is carried out to the statistically designed experiments in order to find the significant factors affecting feed force and drilling moment.
Table 1 shows the drilling factors and their levels.
Table 1 Drilling factors and their values used in the experimental work.
Pei, “Modeling the dependency of edge chipping size on the material properties and cutting force for rotary ultrasonic drilling of brittle materials,” Int.
The analysis of variance technique (ANOVA) is carried out to the statistically designed experiments in order to find the significant factors affecting feed force and drilling moment.
Table 1 shows the drilling factors and their levels.
Table 1 Drilling factors and their values used in the experimental work.
Pei, “Modeling the dependency of edge chipping size on the material properties and cutting force for rotary ultrasonic drilling of brittle materials,” Int.
Online since: February 2021
Authors: Muhammad Mansoor, Liaqat Ali, Noveed Ejaz
It implied that the hardness can be taken as an indicative of the mechanical properties.
Generally, anelastic responses arise due to two factors: phase transformation or geometrical condition [51].
However, the intrinsic properties of the second phase component and its interfacial bonding with the matrix are important factors to contribute in the strength of the composite.
Valente, Evolution of microstructural and mechanical properties of lanthanum zirconate thermal barrier coatings at high temperature, Surf Coat Technol, 2015, 268, p. 298-302 [30] G.
Kim, Mechanical properties of lanthanum zirconate-based composite thermal barrier coatings, Adv.
Generally, anelastic responses arise due to two factors: phase transformation or geometrical condition [51].
However, the intrinsic properties of the second phase component and its interfacial bonding with the matrix are important factors to contribute in the strength of the composite.
Valente, Evolution of microstructural and mechanical properties of lanthanum zirconate thermal barrier coatings at high temperature, Surf Coat Technol, 2015, 268, p. 298-302 [30] G.
Kim, Mechanical properties of lanthanum zirconate-based composite thermal barrier coatings, Adv.