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Online since: November 2014
Authors: Shu Guang Guo, Shi Bing Sun, Ying Liang Tian
The relation between glass surface tension and the content of Al2O3 conforms to the formula Y=290+6.5WAl2O3, Al2O3 factors influence the surface tension of the glass is 6.5.
High alkali aluminosilicate glass having excellent mechanical properties, particularly outstanding strength, hardness, toughness and scratch resistance, etc.
In addition, the high alkali aluminosilicate glass have good chemical stability and mechanical properties, so it show very good application prospects in the high-speed transport, new energy vehicles, solar - power industry and other aspects[3].
Create a neutral atmosphere to the sample to avoid surface tension changes affected by the atmosphere.
Use Bashforth-Adams table [11] can be found shape factor β.
High alkali aluminosilicate glass having excellent mechanical properties, particularly outstanding strength, hardness, toughness and scratch resistance, etc.
In addition, the high alkali aluminosilicate glass have good chemical stability and mechanical properties, so it show very good application prospects in the high-speed transport, new energy vehicles, solar - power industry and other aspects[3].
Create a neutral atmosphere to the sample to avoid surface tension changes affected by the atmosphere.
Use Bashforth-Adams table [11] can be found shape factor β.
Online since: May 2013
Authors: Xun Guo Zhu
It is considered the anchored effect is influenced by some factors.
As the rock character and the grout property are similar, the rock bolt anchored effect is optimal.
And on this basis for detailed analysis of the factors affecting it.
Conclusion (1) It can be seen from the above analysis, many factors influence a bolt anchoring effect, and lead to the anchoring mechanism is complex system engineering
The mechanical behavior of intentioned grouted rock bolts.
As the rock character and the grout property are similar, the rock bolt anchored effect is optimal.
And on this basis for detailed analysis of the factors affecting it.
Conclusion (1) It can be seen from the above analysis, many factors influence a bolt anchoring effect, and lead to the anchoring mechanism is complex system engineering
The mechanical behavior of intentioned grouted rock bolts.
Online since: January 2011
Authors: Dong Fang Zhao, Xun De Xie, Tian Yu, Xiao Dong Zhang
China
2College of Mechanical Engineering, Chongqing University, Chongqing, P.R.
The results indicate that the agent-based simulation method can simulate the organizational strategy in production cells, and provide a new way to study affecting mechanism of different organizational strategies on prodution cells.
In recent years, simulation research integrating human factors into the production model has emerged.
Therefore, the simulation results not only show that the organizational strategy has enormous impact on the performance of production cells, but also verify that the simulation method proposed can be utilized to study affecting mechanism of different organizational strategies on prodution cells.
(Ed.), Handbook of Human Factors and Ergonomics, New York, Wiley, (2006), p. 967~996 [9] Z.H.
The results indicate that the agent-based simulation method can simulate the organizational strategy in production cells, and provide a new way to study affecting mechanism of different organizational strategies on prodution cells.
In recent years, simulation research integrating human factors into the production model has emerged.
Therefore, the simulation results not only show that the organizational strategy has enormous impact on the performance of production cells, but also verify that the simulation method proposed can be utilized to study affecting mechanism of different organizational strategies on prodution cells.
(Ed.), Handbook of Human Factors and Ergonomics, New York, Wiley, (2006), p. 967~996 [9] Z.H.
Online since: October 2014
Authors: Ke Jian Wang, Bo Zhu, Ji Zhao Liang, Feng Jiao Li
These studies focused on improving the biocompatibility, biodegradability, hydrophilic and mechanical properties of PLLA.
Rheological properties of polymeric melts play an important role in processing operation of polymeric materials and determining mechanical properties of final products.
Therefore, it must be considered as one of the key factors when designing extrusion dies and controlling the quality of extrudate products.
The partial physical properties of the two PLLA resins are listed in Table 1.
Iwata, Uniaxial drawing and mechanical properties of poly [(R)-3- hydroxybutwrate]/poly (L-lactic acid) blends, Biomacromolecules 5 (2004) 1557-1566
Rheological properties of polymeric melts play an important role in processing operation of polymeric materials and determining mechanical properties of final products.
Therefore, it must be considered as one of the key factors when designing extrusion dies and controlling the quality of extrudate products.
The partial physical properties of the two PLLA resins are listed in Table 1.
Iwata, Uniaxial drawing and mechanical properties of poly [(R)-3- hydroxybutwrate]/poly (L-lactic acid) blends, Biomacromolecules 5 (2004) 1557-1566
Online since: September 2014
Authors: Hua Tian, Zi Xian Zhang
The fresh-old concrete bonding interface is the key to designing assembled monolithic water-distributing beam of mechanical draft cooling tower.
Affected by the combined impact of shear force and moment, main rebar is under a state of complex stress, the principal stress of which can be calculated by the forth strength theory.
Introduction Mechanical draft cooling tower is the main structure of circulating cooling system in thermal power plant.
Force analysis of interface between fresh-old concrete Chinese scholars have conducted a lot of experimental study and theoretical analysis about the bonding properties and force mechanisms of the interface of fresh-old concrete, the main conclusions are [1~4]: 1) compared to monolithic pouring, the bonding strength of fresh-old concrete interface reduced to some extent, 2) on the interface, the shear transfer was achieved by fresh-old concrete bonding, dowel action, aggregate interlock and restraint stiffness of reinforcement.
The working environment determines the interface should be controlled under uncracked state. 2, because of the combined action of shear and bending moment, the reinforcing steel crossing interface is a complex stress state. 3, the anchorage is the prerequisite that ensures the function of reinforcing steel, so the reinforcing steel shall be prevented from anchoring failure. 4, when resistance of fresh-old concrete interface can be guaranteed, in order to ensure the durability, the surface of water-distributing beam should be coated waterproof paint. 5, there are many influence factors influencing strength of fresh-old concrete interface, and the experimental study on this project especially the influence of seepage is rare, further study is requested in the future.
Affected by the combined impact of shear force and moment, main rebar is under a state of complex stress, the principal stress of which can be calculated by the forth strength theory.
Introduction Mechanical draft cooling tower is the main structure of circulating cooling system in thermal power plant.
Force analysis of interface between fresh-old concrete Chinese scholars have conducted a lot of experimental study and theoretical analysis about the bonding properties and force mechanisms of the interface of fresh-old concrete, the main conclusions are [1~4]: 1) compared to monolithic pouring, the bonding strength of fresh-old concrete interface reduced to some extent, 2) on the interface, the shear transfer was achieved by fresh-old concrete bonding, dowel action, aggregate interlock and restraint stiffness of reinforcement.
The working environment determines the interface should be controlled under uncracked state. 2, because of the combined action of shear and bending moment, the reinforcing steel crossing interface is a complex stress state. 3, the anchorage is the prerequisite that ensures the function of reinforcing steel, so the reinforcing steel shall be prevented from anchoring failure. 4, when resistance of fresh-old concrete interface can be guaranteed, in order to ensure the durability, the surface of water-distributing beam should be coated waterproof paint. 5, there are many influence factors influencing strength of fresh-old concrete interface, and the experimental study on this project especially the influence of seepage is rare, further study is requested in the future.
Online since: March 2014
Authors: Luboš Náhlík, Pavel Hutař, Pavel Pokorný
Material properties
For determination of significance of the retardation effects very commonly used steels EA1N and EA4T were considered.
Due to very good plastic properties the EA4T steel in not so sensitive to high overloading.
This is very sought-after property for application of the EA4T steel.
Hughes: Influence of yield strength on overload affected fatigue crack growth behavior in 4340 steel, Air Force Flight Dynamics Laboratory (1974) [4] M.
Beier: Parameters affecting the damage tolerance behaviour of railway axles, Engineering Fracture Mechanics 78 (2011), p. 214 [6] P.
Due to very good plastic properties the EA4T steel in not so sensitive to high overloading.
This is very sought-after property for application of the EA4T steel.
Hughes: Influence of yield strength on overload affected fatigue crack growth behavior in 4340 steel, Air Force Flight Dynamics Laboratory (1974) [4] M.
Beier: Parameters affecting the damage tolerance behaviour of railway axles, Engineering Fracture Mechanics 78 (2011), p. 214 [6] P.
Online since: August 2019
Authors: G. Deenadayalan, Pravin R. Lokhande, Sethuraman Balaguru
Moreover, the fatigue factors are discussed so that researcher can get little idea about failure point of the nickel-titanium rotary files.
The nickel-titanium alloys are used as bio-compatible material in Endodontics over the stainless steel because of its mechanical properties and geometry viz. shape memory property, higher super elasticity, flexibility, lower elasticity modulus than steel, taper and narrowness in curved canal proved to be efficient for canal preparation [5].
There are three important factor related to fatigue life viz. fatigue damage, fatigue safety factor, fatigue sensitivity factor etc.
Fatigue safety factor represents factor of safety value related to design life.
Yared G, In vitro study of the torsional properties of new and used Pro File nickel titanium rotary files, J Endod. 30 (2004 ) 410–12
The nickel-titanium alloys are used as bio-compatible material in Endodontics over the stainless steel because of its mechanical properties and geometry viz. shape memory property, higher super elasticity, flexibility, lower elasticity modulus than steel, taper and narrowness in curved canal proved to be efficient for canal preparation [5].
There are three important factor related to fatigue life viz. fatigue damage, fatigue safety factor, fatigue sensitivity factor etc.
Fatigue safety factor represents factor of safety value related to design life.
Yared G, In vitro study of the torsional properties of new and used Pro File nickel titanium rotary files, J Endod. 30 (2004 ) 410–12
Online since: July 2010
Authors: Jaya Rawat, Saptarshi Ray, P.V.C. Rao, Nettem V. Choudary
Various nanoparticles of
metal and their oxides have been recognized to possess antibacterial properties.
Biofilm formation is a complex phenomenon and it depends on various factors which affect the growth of microbial species on industrial equipments such as nutrient availability, variations in water velocity, turbulence, temperature effects, metallic surface morphology etc.
As it was discussed in the article, the erosion of the copper from the paint adversely affects the antifouling properties of the paint, it is thus vital that the metal do not leach out of the paint.
The sea water was evaluated for its properties and is given in Table -1.
Table -1, Physico-chemical properties of sea water.
Biofilm formation is a complex phenomenon and it depends on various factors which affect the growth of microbial species on industrial equipments such as nutrient availability, variations in water velocity, turbulence, temperature effects, metallic surface morphology etc.
As it was discussed in the article, the erosion of the copper from the paint adversely affects the antifouling properties of the paint, it is thus vital that the metal do not leach out of the paint.
The sea water was evaluated for its properties and is given in Table -1.
Table -1, Physico-chemical properties of sea water.
Online since: December 2013
Authors: J.A. Ghani, M.S. Said, Mohd Asri Selamat, C.H. Che Hassan, J.A. Shukur, M.S. Yusoff
The main attractive feature of MMCs is their high strength-to-weight ratio, excellent mechanical and thermal properties (compared with that of conventional material and alloy), improved fatigue and creep characteristics, and better wear resistance [5–11].
Aluminum alloy reinforced with alumina and silicon carbide as well as with aluminum nitride (Al/AlN has been extensively investigated by the scientific community, as the integration of these materials produces excellent mechanical and thermal properties to be used.
Tool wear is the most critical measure of quality in many mechanical products.
This paper presents the machining factor that affects the machinability of 10 wt% AlN reinforced with the AlSi alloy when machined during the end milling process and by the uncoated carbide of the cutting insert.
Heat treatment was conducted to increase the mechanical properties of the Al-SiC MMC.
Aluminum alloy reinforced with alumina and silicon carbide as well as with aluminum nitride (Al/AlN has been extensively investigated by the scientific community, as the integration of these materials produces excellent mechanical and thermal properties to be used.
Tool wear is the most critical measure of quality in many mechanical products.
This paper presents the machining factor that affects the machinability of 10 wt% AlN reinforced with the AlSi alloy when machined during the end milling process and by the uncoated carbide of the cutting insert.
Heat treatment was conducted to increase the mechanical properties of the Al-SiC MMC.
Online since: September 2008
Authors: Shi Yan, Wei Sun
Introduction
Concrete structures might be damaged in various types and degrees during their service lives due to
some influencing factors such as aging of material, excessive use, overloading, environmental
condition and deficient maintenance.
The lead zirconate - titanate (PZT) is a kind of typical piezoelectric ceramic material with these dual properties.
The physical parameters of both materials are shown in Table 1 and the mechanical and electrical properties of the PZT patches are shown in Table 2.
There are two kinds of factors influenced the range.
The one includes external factors such as voltage and frequency of the PZT excitation, and the other contains material properties and dimensions of the body structure etc.
The lead zirconate - titanate (PZT) is a kind of typical piezoelectric ceramic material with these dual properties.
The physical parameters of both materials are shown in Table 1 and the mechanical and electrical properties of the PZT patches are shown in Table 2.
There are two kinds of factors influenced the range.
The one includes external factors such as voltage and frequency of the PZT excitation, and the other contains material properties and dimensions of the body structure etc.