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Online since: February 2011
Authors: Krzysztof J. Kurzydlowski, Janusz Kaminski, Bogdan Dabrowski, Wojciech Swieszkowski
Due to its suitable physical properties and good biocompatibility, the titanium (Ti) can be used for development of porous structures for biomedical applications.
Most of them are focused on physical and mechanical properties and biocompatibility [8,9].
The interconnectivity and geometry of the pores might be also important factors affecting corrosion resistance of porous materials [11,12].
The relation between physical properties, such as open porosity, pore size, agglomeration and interconnectivity of the pores, and corrosion parameters of highly porous titanium scaffolds (with the total porosity up to 80%) in physiological medium will be investigated.
The physical properties of porous titanium samples Designed porosity [%] Total porosity Pt [%] Open porosity Po [%] Spherical pore diameter D [µm] Form factor of pores FF (sphericity) µCT µCT µCT SEM + IA 45 47.31 32.69 301 +/- 171 0.87 +/- 0.061 55 53.21 46.80 274 +/- 155 0.87 +/- 0.068 60 67.19 67.08 310 +/- 176 0.87 +/- 0.051 75 77.16 76.96 292 +/- 166 0.87 +/- 0.053 Figure. 2.
Most of them are focused on physical and mechanical properties and biocompatibility [8,9].
The interconnectivity and geometry of the pores might be also important factors affecting corrosion resistance of porous materials [11,12].
The relation between physical properties, such as open porosity, pore size, agglomeration and interconnectivity of the pores, and corrosion parameters of highly porous titanium scaffolds (with the total porosity up to 80%) in physiological medium will be investigated.
The physical properties of porous titanium samples Designed porosity [%] Total porosity Pt [%] Open porosity Po [%] Spherical pore diameter D [µm] Form factor of pores FF (sphericity) µCT µCT µCT SEM + IA 45 47.31 32.69 301 +/- 171 0.87 +/- 0.061 55 53.21 46.80 274 +/- 155 0.87 +/- 0.068 60 67.19 67.08 310 +/- 176 0.87 +/- 0.051 75 77.16 76.96 292 +/- 166 0.87 +/- 0.053 Figure. 2.
Online since: September 2013
Authors: Yan Jie Guo, Li Fang Wang, Cheng Lin Liao
Also, the relationships between motor speed, torque and vehicle speed are calculated according to the mechanical properties of the vehicle.
The electromagnetic interference (EMI) will affect the low voltage sensitive devices, which are important control or implementation units in electric vehicles.
The power converter model is shown in [2] [3] and the high frequency model of electric motor is given in [4].Also, the power battery, which is the most different part between electric drive systems used in electric vehicles and other cases, is analyzed to get its I-V performance [5] and radio frequency (RF) properties [6].
These different working conditions will bring different time domain and frequency domain expressions, which affect the conducted EMI.
[6] E Hoene, et al.: Rf-Properties of Automotive Power Batteries, IEEE Int.
The electromagnetic interference (EMI) will affect the low voltage sensitive devices, which are important control or implementation units in electric vehicles.
The power converter model is shown in [2] [3] and the high frequency model of electric motor is given in [4].Also, the power battery, which is the most different part between electric drive systems used in electric vehicles and other cases, is analyzed to get its I-V performance [5] and radio frequency (RF) properties [6].
These different working conditions will bring different time domain and frequency domain expressions, which affect the conducted EMI.
[6] E Hoene, et al.: Rf-Properties of Automotive Power Batteries, IEEE Int.
Online since: December 2011
Authors: Natsuko Sugiura, Naoki Yoshinaga
Presumably, the needle-shaped microstructure affected the limitation of the slip system.
Introduction The r-value is one of the key mechanical properties of sheet steels for deep drawing and is basically dominated by the crystallographic texture, where the <111>//ND texture is favorable.
This result indicates the GBS does not play an essential role in the very high r-value main factor.
φ 1 Φ 0 90 90 0 The tensile properties of the electro-deposited pure iron are shown in Table 2 and its tensile strength is almost equivalent to commercial IF steel, although its r value, at over 7, far exceeds that of IF steel.
Such difference in continuity at the grain boundary is thought to be one factor of the limitation slip system.
Introduction The r-value is one of the key mechanical properties of sheet steels for deep drawing and is basically dominated by the crystallographic texture, where the <111>//ND texture is favorable.
This result indicates the GBS does not play an essential role in the very high r-value main factor.
φ 1 Φ 0 90 90 0 The tensile properties of the electro-deposited pure iron are shown in Table 2 and its tensile strength is almost equivalent to commercial IF steel, although its r value, at over 7, far exceeds that of IF steel.
Such difference in continuity at the grain boundary is thought to be one factor of the limitation slip system.
Online since: February 2013
Authors: Ludmila Novakova-Marcincinova, Jozef Novak-Marcincin
The workers of Faculty of Mechanical Engineering and Naval Architecture of University of Zagreb (Croatia) realised testing the influence of the position of products in the machine working area on the mechanical properties (tensile and flexural properties) of the product [2].
With polymeric foils better mechanical properties are achieved than with paper.
For both selected materials, a parameter study has been performed to optimize the process regarding part density, since porosity has a harmful effect on the mechanical properties of the part.
To predict the mechanical behaviour of FDM parts, it is critical to understand the material properties of the raw FDM process material, and the effect that FDM build parameters have on anisotropic material properties.
Wright: Anisotropic material properties of fused deposition modeling ABS.
With polymeric foils better mechanical properties are achieved than with paper.
For both selected materials, a parameter study has been performed to optimize the process regarding part density, since porosity has a harmful effect on the mechanical properties of the part.
To predict the mechanical behaviour of FDM parts, it is critical to understand the material properties of the raw FDM process material, and the effect that FDM build parameters have on anisotropic material properties.
Wright: Anisotropic material properties of fused deposition modeling ABS.
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 2013
Authors: Anna Hojna, Jan Michalicka, Ondrej Srba
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: July 2025
Authors: Kusmono Kusmono, Muhammad Waziz Wildan, Henny Pratiwi
Researchers have investigated using natural fiber to improve the mechanical properties of polymer composites [1,2].
It will deteriorate the mechanical properties and the use of natural fibers as reinforcements in the polymer matrix.
The partial removal of hemicellulose, lignin, wax, and impurities on the fiber surface due to alkali treatment greatly affected the composite properties.
Characterization and Factors Effecting Fiber Properties, 2000
Mechanical, Thermal and Water Absorption Properties of Kenaf-Fiber-Based Polypropylene and Poly(Butylene Succinate) Composites.
It will deteriorate the mechanical properties and the use of natural fibers as reinforcements in the polymer matrix.
The partial removal of hemicellulose, lignin, wax, and impurities on the fiber surface due to alkali treatment greatly affected the composite properties.
Characterization and Factors Effecting Fiber Properties, 2000
Mechanical, Thermal and Water Absorption Properties of Kenaf-Fiber-Based Polypropylene and Poly(Butylene Succinate) Composites.
Online since: June 2019
Authors: Si Jia Sun, Xiao Ling Niu
The effect of the amount of liquid crystal on the properties of structure and swelling were conducted.
This material can combine the properties of both, which could improve the properties of poly(hydroxyethyl methacrylate) gel.
The orthogonal experiment of the four factors level [L9(34)] was designed as shown in table 1.
According to the development trend of factors, the influence of different single factors on swelling were investigated for product. 2.5.1 Influencing rule of monomer mass ratio on swelling property.
Although the big liquid crystal molecules were not bibulous, because of the space factors, hydroxyethyl methacrylatethe after absorping water would necessarily affect the original structure of cholesteric liquid crystal phase.
This material can combine the properties of both, which could improve the properties of poly(hydroxyethyl methacrylate) gel.
The orthogonal experiment of the four factors level [L9(34)] was designed as shown in table 1.
According to the development trend of factors, the influence of different single factors on swelling were investigated for product. 2.5.1 Influencing rule of monomer mass ratio on swelling property.
Although the big liquid crystal molecules were not bibulous, because of the space factors, hydroxyethyl methacrylatethe after absorping water would necessarily affect the original structure of cholesteric liquid crystal phase.
Online since: February 2012
Authors: P. N. Vinod, Satendra Kumar, M.R. Kulkarni, Sachin D. Kore
This induced current and its skin depth depend upon the material properties.
Thus discharge energy in electromagnetic welds and in turn velocity of impact is the deciding factor for occurrence of wave at the weld interface.
This compression of grains improves the mechanical properties of weld interface.
There is absence of fusion and heat affected zone in EM weld.
Compression of grains enhances mechanical properties of EM welds.
Thus discharge energy in electromagnetic welds and in turn velocity of impact is the deciding factor for occurrence of wave at the weld interface.
This compression of grains improves the mechanical properties of weld interface.
There is absence of fusion and heat affected zone in EM weld.
Compression of grains enhances mechanical properties of EM welds.
Online since: September 2016
Authors: Eugênio José Zoqui, Luis Torres, Cecilia Tereza Weishaupt Proni
For thixoforming it is critical to have a refined microstructure that during the heating to the semisolid state, achieve a mixture of small spheres immerse in liquid, which is crucial in order to get the best rheological properties for the slurry.
As the cross-section of the sample remains approximately constant, the process can be repeated many times allowing to control the microstructure and thus the final properties of the materials [9,10].
The value 1 of the shape factor (SF) indicates a fully globular structure.
As can be seem the ECAP easily flows under a very low stress and the corresponding apparent viscosity also shows better rheological properties leading to a 2 * 104 Pa.s value that is comparable to the presented by lard products.
The effect of microstructure on the rheological properties of alloys in the semisolid: a comparison between MHD, SIMA and spray cast alloys.
As the cross-section of the sample remains approximately constant, the process can be repeated many times allowing to control the microstructure and thus the final properties of the materials [9,10].
The value 1 of the shape factor (SF) indicates a fully globular structure.
As can be seem the ECAP easily flows under a very low stress and the corresponding apparent viscosity also shows better rheological properties leading to a 2 * 104 Pa.s value that is comparable to the presented by lard products.
The effect of microstructure on the rheological properties of alloys in the semisolid: a comparison between MHD, SIMA and spray cast alloys.