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Online since: November 2007
Authors: Wen Feng Ding, Jiu Hua Xu, Chang Yong Yang, Sheng Ting Tong
There is no microcrack in surface layer of the groove, and
the depth of work-hardening is less than 40 µm, which indicates that the grinding affected zone is
small.
Compared with conventional grinding wheels, CBN wheels have many unique advantages in grinding property, grinding resistance, machine efficiency, workpiece surface, precision and longevity.
Because of the several factors, such as the coating layer is too much deep, the exposing height of the grit is relatively low and the chip space is very limited, the chips are often blocked and the grits are very easy to pull out from the tool substrate under heavy load circumstance during grinding.
There is no microcrack in surface of groove, and grinding affected zone is small.
Xiao: Journal of Mechanical Engineering Vol.38 (2002), pp. 91.
Compared with conventional grinding wheels, CBN wheels have many unique advantages in grinding property, grinding resistance, machine efficiency, workpiece surface, precision and longevity.
Because of the several factors, such as the coating layer is too much deep, the exposing height of the grit is relatively low and the chip space is very limited, the chips are often blocked and the grits are very easy to pull out from the tool substrate under heavy load circumstance during grinding.
There is no microcrack in surface of groove, and grinding affected zone is small.
Xiao: Journal of Mechanical Engineering Vol.38 (2002), pp. 91.
Online since: December 2014
Authors: Hana Geiplova, Lubomir Mindos, Radka Novakova, Katerina Kreislova
The extent of the corrosion processes can be predicted, when the affecting parameters and the mechanisms of the processes are known.
On the other hand significant reduction of coatings lifetime still occurs due to several factors: - improper structural design, - defects in coatings, - specific corrosion stress.
The mechanical stress was supposed to be a dominant reason of premature breaking of conductor.
There is necessary to verify these models in respect to structure designs, specific microclimates, corrosion mechanisms and other factors influencing the corrosion stress.
Lanik, Corrosion behaviour of weathering steels in the Czech republic, proceedings of 2nd International conference Corrosion and Material Protection, ISBN 978-80-903933-6-3, 19-22 April 2010, Prague [4] K.Kreislova, D.Knotkova, T.Kubatik, J.Had, P.Sajdl, Properties and protective ability of long-term exposed weathering steel constructions in the Czech Republic, proceeding of EUROCORR 2010, 13-17.9.2010, Moskva [5] D.Knotkova, J.Vlckova, Atmospheric Corrosion of Bolted Lap Joints Made of Weathering Steels, Atmospheric Corrosion, ASTM 1239, W.
On the other hand significant reduction of coatings lifetime still occurs due to several factors: - improper structural design, - defects in coatings, - specific corrosion stress.
The mechanical stress was supposed to be a dominant reason of premature breaking of conductor.
There is necessary to verify these models in respect to structure designs, specific microclimates, corrosion mechanisms and other factors influencing the corrosion stress.
Lanik, Corrosion behaviour of weathering steels in the Czech republic, proceedings of 2nd International conference Corrosion and Material Protection, ISBN 978-80-903933-6-3, 19-22 April 2010, Prague [4] K.Kreislova, D.Knotkova, T.Kubatik, J.Had, P.Sajdl, Properties and protective ability of long-term exposed weathering steel constructions in the Czech Republic, proceeding of EUROCORR 2010, 13-17.9.2010, Moskva [5] D.Knotkova, J.Vlckova, Atmospheric Corrosion of Bolted Lap Joints Made of Weathering Steels, Atmospheric Corrosion, ASTM 1239, W.
Online since: July 2011
Authors: Chang Jiang Pan, Yu Dong Nie, Yun Xiao Dong
Controlling surface properties of scaffolds materials can be used to control cell morphology and further direct cell function.
The type of micropattern can evidently affect the production of collagen II and VI, indicating that BMP-2 micropattern can modulate cell function.
For joint cartilage, the mechanical, biochemical, inflammatory, or immunological stimuli can give rise to ECM synthesis and decomposition disbalance of chondrocytes, further resulting in degradation of cartilage matrix.
The main feature of osteoarthropathy is the ECM degradation of cartilage chondrocytes concurrently with the release of inflammatory factors [6].
The as-prepared protein micropatterns can significantly affect human chondrocytes adhesion, spread, growth and protein expression.
The type of micropattern can evidently affect the production of collagen II and VI, indicating that BMP-2 micropattern can modulate cell function.
For joint cartilage, the mechanical, biochemical, inflammatory, or immunological stimuli can give rise to ECM synthesis and decomposition disbalance of chondrocytes, further resulting in degradation of cartilage matrix.
The main feature of osteoarthropathy is the ECM degradation of cartilage chondrocytes concurrently with the release of inflammatory factors [6].
The as-prepared protein micropatterns can significantly affect human chondrocytes adhesion, spread, growth and protein expression.
Online since: August 2008
Authors: José Renato Coury, Vádila Giovana Guerra, José Antônio Silveira Gonçalves, M.A.F. Daher, M.V. Rodrigues
However, these droplet characteristics are
partly due to the jet properties, such as: jet velocity, diameter, trajectory, penetration in the gas
current and atomization mechanisms.
Particularly, the jet penetration is one of the most important factors in the determination of the space distribution of the droplets.
The size of the droplets generated in the atomization process is an important parameter, once it affects the particle collection within the scrubber.
These interactions certainly affect the size of the droplets generated inside the scrubber.
Tanasawa: Transactions of the Society of Mechanical Engineers Vol. 4 (1938), p.86
Particularly, the jet penetration is one of the most important factors in the determination of the space distribution of the droplets.
The size of the droplets generated in the atomization process is an important parameter, once it affects the particle collection within the scrubber.
These interactions certainly affect the size of the droplets generated inside the scrubber.
Tanasawa: Transactions of the Society of Mechanical Engineers Vol. 4 (1938), p.86
Online since: August 2016
Authors: Amanda Melissa Damião Leite, Edcleide Maria Araújo, Vanessa da Nóbrega Medeiros, Thamyres Cardoso de Carvalho
Obtaining membranes incorporating clay is attracting interest because it improves the membrane filtration properties.
The addition of solid loads in polymeric materials is a practice widely used in industry to improve its properties - mechanical strength, flammability, thermal and electrical conductivities, eliminating the formation of macrovoids, improvement of porosity, permeability and hydrophilicity [2, 3], with the use of low loading levels (1-5 wt%).
These membranes have properties that provide good chemical resistance as well as heat resistance.
Accordingly, much effort is to improve the performance of membranes with respect to the antifouling properties, mechanical strength and chemical resistance [6].
It is widely used in the commercial preparation of membranes and allows to obtain membranes with different morphology and transportation properties.
The addition of solid loads in polymeric materials is a practice widely used in industry to improve its properties - mechanical strength, flammability, thermal and electrical conductivities, eliminating the formation of macrovoids, improvement of porosity, permeability and hydrophilicity [2, 3], with the use of low loading levels (1-5 wt%).
These membranes have properties that provide good chemical resistance as well as heat resistance.
Accordingly, much effort is to improve the performance of membranes with respect to the antifouling properties, mechanical strength and chemical resistance [6].
It is widely used in the commercial preparation of membranes and allows to obtain membranes with different morphology and transportation properties.
Online since: July 2014
Authors: Zhen Chen
Designed line tower positions are higher than maximum flood level of surface rivers in the area, the towers are less affected by surface rivers.
There is no large surface water body but some seasonal creeks in the area which is recharged mainly by atmospheric precipitation and largely affected by climates.
Based on mechanical properties of rocks, lithology and composition relationships, rock strata in the survey area can be classified into soft and loose engineering geology rocks.
Coal mining has a long history in the area where small coal mines and old caves ate distributed complexly to largely affect tower base of ground lines.
(3) Old goafs affect towers outside the goaf influence range.
There is no large surface water body but some seasonal creeks in the area which is recharged mainly by atmospheric precipitation and largely affected by climates.
Based on mechanical properties of rocks, lithology and composition relationships, rock strata in the survey area can be classified into soft and loose engineering geology rocks.
Coal mining has a long history in the area where small coal mines and old caves ate distributed complexly to largely affect tower base of ground lines.
(3) Old goafs affect towers outside the goaf influence range.
Online since: August 2010
Authors: Fei Li, Shan Shan Hu, Hai Rui Liang, Yuan Biao Zhang
Qiang Liu and some other people also have done some research on Mechanical Properties [5][6][7]
.
By analyzing the formula (8), we can find many factors that influence the speed after hitting such as m , ballv , batv , P ,COR and l .
Here, we mainly discuss the influence of factors ballv and COR.
Summary Our model is mainly to study the various factors on the Hitting-Effects of baseball.
Then we analyzed the influences of the most important factors: the speed of the bat before hitting and the COR.
By analyzing the formula (8), we can find many factors that influence the speed after hitting such as m , ballv , batv , P ,COR and l .
Here, we mainly discuss the influence of factors ballv and COR.
Summary Our model is mainly to study the various factors on the Hitting-Effects of baseball.
Then we analyzed the influences of the most important factors: the speed of the bat before hitting and the COR.
Online since: February 2016
Authors: Grzegorz Moskal, Krzysztof Szymański, Hanna Myalska
The aim of the investigations was to compare microstructure and selected mechanical properties of WC-Co-Cr coatings.
Hard tungsten carbide is distributed in the plastic cobalt and chromium matrix which gives good corrosion and wear properties.
Selected properties of WC-Co-Cr coatings are shown in Table 3.
In the case of coatings several factors detemine theirs good wear resistance.
The use of HVAF technique for deposition WC-Co-Cr powder caused more beneficial phase composition of obtained coating, which is strongly related with coating properties.
Hard tungsten carbide is distributed in the plastic cobalt and chromium matrix which gives good corrosion and wear properties.
Selected properties of WC-Co-Cr coatings are shown in Table 3.
In the case of coatings several factors detemine theirs good wear resistance.
The use of HVAF technique for deposition WC-Co-Cr powder caused more beneficial phase composition of obtained coating, which is strongly related with coating properties.
Online since: May 2013
Authors: Hardev Singh Virk, Ravi Chand Singh, Manmeet Pal Singh
Hence solids like tin oxide (SnO2) whose electrical properties are affected by the presence of a gas-phase or liquid-phase species have drawn attention of numerous researchers to fabricate prototype sensing devices.
Each state has its own unique properties and characteristics that can affect sensor performance.
Nano- and polycrystalline materials are very complicated objects for study, because the electro-conductivity of these materials depends on a number of factors [4, 13-16].
Consequently, the material exhibits different physical properties.
Particle morphology is influenced by the factors such as supersaturation, nucleation and growth rates, colloidal stability, recrystallization and aging process.
Each state has its own unique properties and characteristics that can affect sensor performance.
Nano- and polycrystalline materials are very complicated objects for study, because the electro-conductivity of these materials depends on a number of factors [4, 13-16].
Consequently, the material exhibits different physical properties.
Particle morphology is influenced by the factors such as supersaturation, nucleation and growth rates, colloidal stability, recrystallization and aging process.
Online since: January 2010
Authors: Luís G. Reis, P. Gil, J. Fernandes, M.M. Neves
This study
allows concluding on which of these corkrubber composites have adequate sealing properties for
gasoline as well as blends of gasoline with ethanol.
This study allows concluding that the corkrubber composites have adequate sealing properties for gasoline as well as blends of gasoline with ethanol.
It can also be observed that blends with low and medium percentages of ethanol promote greater variations of physical properties on these materials (hardness, volume, thickness and weight) than gasoline or the E85.
On the other hand, these results drive us to consider some reservations on the use of compounds TS1800 and TS7100, due to the significant variations of the properties.
The composite TS1800 and TS7100 are the most affected after 168 hours of immersion.
This study allows concluding that the corkrubber composites have adequate sealing properties for gasoline as well as blends of gasoline with ethanol.
It can also be observed that blends with low and medium percentages of ethanol promote greater variations of physical properties on these materials (hardness, volume, thickness and weight) than gasoline or the E85.
On the other hand, these results drive us to consider some reservations on the use of compounds TS1800 and TS7100, due to the significant variations of the properties.
The composite TS1800 and TS7100 are the most affected after 168 hours of immersion.