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Online since: October 2012
Authors: Hsin Pei Chen, Jen Ching Huang, Shao Hsun Chang
Elemental composition is a critical factor in alloy design which will definitely affect the alloying behaviors and properties of high-entropy alloys.
The addition of Al was identified to having considerable effects on the structures and properties of high-entropy alloys due to its large atomic radius [8].
Fu, Microstructure and compressive properties of AlCrFeCoNi high entropy alloy, Advanced Engineering Materials, 491 (2008) 154-158
Shi, Microstructure and mechanical properties of CoCrFeNiTiAlx high-entropy alloys, Materials Science and Engineering, 508 (2009) 214-219 [7] K.
Niihara, Annealing effects on structure and mechanical properties of CoCrFeNiTiAlx high-entropy alloys, Materials Science and Engineering, 20 (2011) 012009
The addition of Al was identified to having considerable effects on the structures and properties of high-entropy alloys due to its large atomic radius [8].
Fu, Microstructure and compressive properties of AlCrFeCoNi high entropy alloy, Advanced Engineering Materials, 491 (2008) 154-158
Shi, Microstructure and mechanical properties of CoCrFeNiTiAlx high-entropy alloys, Materials Science and Engineering, 508 (2009) 214-219 [7] K.
Niihara, Annealing effects on structure and mechanical properties of CoCrFeNiTiAlx high-entropy alloys, Materials Science and Engineering, 20 (2011) 012009
Online since: July 2015
Authors: Nawawi Chouw, Jia Xin Chen
Even under heavy traffic loadings the deterioration will likely to accelerate and affect the integrity of the structures.
Although G/CFRP has outstanding properties, e.g. high strength, the usage is mainly restricted to retrofitting of earthquake-prone structures.
Following each shake table experiment the dynamic properties of the system is investigated by performing snap-back tests.
Chouw, N, Mechanical and dynamic properties of coconut fibre reinforced concrete.
Chouw, Dynamic and static properties of flax fibre reinforced polymer tube confined coir fibre reinforced concrete.
Although G/CFRP has outstanding properties, e.g. high strength, the usage is mainly restricted to retrofitting of earthquake-prone structures.
Following each shake table experiment the dynamic properties of the system is investigated by performing snap-back tests.
Chouw, N, Mechanical and dynamic properties of coconut fibre reinforced concrete.
Chouw, Dynamic and static properties of flax fibre reinforced polymer tube confined coir fibre reinforced concrete.
Online since: March 2016
Authors: Sergei A. Kusmanov, Pavel N. Belkin, Aleksei A. Smirnov
Owing to small VGE thickness high heating rates of workpieces (up to 100 deg/s) allow avoiding grain growth and associated deterioration of material’s properties [2].
It is known that favorable corrosion properties of steels can be due to compound layers [9].
In this article, we study the effect of the anode nitriding on the corrosion properties of medium carbon steels.
The additional oxidation of sample surface results in the increase in the oxide layer thickness and enhancement of its protective properties.
The protective properties of the coatings are stored for 1–2 hours.
It is known that favorable corrosion properties of steels can be due to compound layers [9].
In this article, we study the effect of the anode nitriding on the corrosion properties of medium carbon steels.
The additional oxidation of sample surface results in the increase in the oxide layer thickness and enhancement of its protective properties.
The protective properties of the coatings are stored for 1–2 hours.
Online since: May 2021
Authors: Nuryono Nuryono, Ahmad Bikharudin, Yuichi Kamiya, Sutarno Sutarno
The peak intensity associated with CaO is due to the HNO3 used as a catalyst in the sol-gel process affecting the intensity of the peak CaO [9].
C3S is hydrated more slowly than C3S, therefore the mechanical properties of MTA may take several days to reach the maximum limit.
The release of calcium ions depends on several factors, such as the shape of the structure and mineral particles in a material.
Mala, Mineral Trioxide Aggregate: A Review of Physical Properties, Compend.
Part I: Physical Properties, Dig.
C3S is hydrated more slowly than C3S, therefore the mechanical properties of MTA may take several days to reach the maximum limit.
The release of calcium ions depends on several factors, such as the shape of the structure and mineral particles in a material.
Mala, Mineral Trioxide Aggregate: A Review of Physical Properties, Compend.
Part I: Physical Properties, Dig.
Online since: August 2016
Authors: Feng Han, Zheng Wang
Concrete is vital in the construction industry, concrete innovation on the change of the traditional building materials and construction properties play an important role.
Lightweight concrete, foam concrete production is usually of foaming agent solution preparation in mechanical way into a bubble.
The material of low thermal conductivity, good thermal insulation anti-condensation properties, high compressive strength, strong bonding, adhesion, resistance to freezing and thawing, drying shrinkage and invasion of small water line linear variable rate, easy hollowing, cracking .
Shrinkage of cement stone structure causes the micro cracks, reduce the density of the structure of the cement, affect the structure of impermeability, frost resistance, corrosion resistance, etc.
Nature of the particle magnetization and the sequence of directional arrangement is the main factor to cement magnetic, at the same time, the varieties of cement and molding process, and the ratio of particle content is to determine the important factors of cement magnetic.
Lightweight concrete, foam concrete production is usually of foaming agent solution preparation in mechanical way into a bubble.
The material of low thermal conductivity, good thermal insulation anti-condensation properties, high compressive strength, strong bonding, adhesion, resistance to freezing and thawing, drying shrinkage and invasion of small water line linear variable rate, easy hollowing, cracking .
Shrinkage of cement stone structure causes the micro cracks, reduce the density of the structure of the cement, affect the structure of impermeability, frost resistance, corrosion resistance, etc.
Nature of the particle magnetization and the sequence of directional arrangement is the main factor to cement magnetic, at the same time, the varieties of cement and molding process, and the ratio of particle content is to determine the important factors of cement magnetic.
Online since: February 2011
Authors: Xi Qiu Fan, Xiao Dong Zhao, Mei Ling Tian
However, with the influence of a variety of marine corrosion factors, corrosion damage emerges at some of facilities constructed in the 70s and 80s of the last century because of lack of the necessary anti-corrosion measures, threatening the normal engineering work.
More scientifically, repair techniques and programs should be established on the basis of detection of integrated corrosion factors.
The concrete is strongly alkaline material, which requires that anti-corrosion coating of concrete has good properties of alkali resistance, penetration resistance and adhesion.
Acrylic polyurethane anticorrosion coating is a new type of composite resin anticorrosion coating not only combined with good gloss and color retention and outdoor durability of acrylic coating but also with excellent mechanical properties and chemical resistance of polyurethane coating.
Reasonable repair techniques and programs should be established on the basis of detection of comprehensive corrosion factors.
More scientifically, repair techniques and programs should be established on the basis of detection of integrated corrosion factors.
The concrete is strongly alkaline material, which requires that anti-corrosion coating of concrete has good properties of alkali resistance, penetration resistance and adhesion.
Acrylic polyurethane anticorrosion coating is a new type of composite resin anticorrosion coating not only combined with good gloss and color retention and outdoor durability of acrylic coating but also with excellent mechanical properties and chemical resistance of polyurethane coating.
Reasonable repair techniques and programs should be established on the basis of detection of comprehensive corrosion factors.
Online since: May 2007
Authors: Yang Zhou, Jin Bao Lin, Wen Jiang Ding, Qu Dong Wang, Li Ming Peng
It was reported by Rokhlin and Kamado etc [2-5] that the Mg-Gd-Y
magnesium alloy was better than conventional Al or Mg alloys in creep properties.
According to the Hall-Petch relationship, as well known, grain refining could elevate some mechanical properties, such as tensile, etc [6].
Meanwhile, the surface of materials had some special behaviors, and it could affect some important properties such as fatigue, corrosion etc.
But in the sub-surface, these factors didn't exist, so the SD decreased in this zone.
The hardness could be influenced by the factors such as: grain boundary, configuration of dentrite and dentrite arm spacing, and their influence became weaker and weaker in turn.
According to the Hall-Petch relationship, as well known, grain refining could elevate some mechanical properties, such as tensile, etc [6].
Meanwhile, the surface of materials had some special behaviors, and it could affect some important properties such as fatigue, corrosion etc.
But in the sub-surface, these factors didn't exist, so the SD decreased in this zone.
The hardness could be influenced by the factors such as: grain boundary, configuration of dentrite and dentrite arm spacing, and their influence became weaker and weaker in turn.
Online since: December 2013
Authors: Richard Jedinák
The location and climate thus are crucial factors in selecting appropriate design strategies for sustainable facades.
Climate is affected, in varying degrees, by latitude, terrain, and altitude, as well as by nearby mountain ranges or bodies water.
Thermal mass It is generally believed that thermal mass should be integrated with night-time ventilation (natural/mechanical) to utilize the full energy-saving potential.
This strategies and technical guidelines for designing environmentally sensitive, energy - efficiency and smart envelope are based on scientific principles (such as climate-specific approaches for minimizing energy consumption, thermal behavior of different facade systems, materials and their properties) and also control of physical environment factors (heat, light, sounds) that improve occupant comfort (thermal, visual, acoustic, and air quality).
In: a) Department of Mechanical and Aerospace Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, United States b) School of Architecture, Rensselaer Polytechnic Institute, Troy, NY 12180, United States [5] H.
Climate is affected, in varying degrees, by latitude, terrain, and altitude, as well as by nearby mountain ranges or bodies water.
Thermal mass It is generally believed that thermal mass should be integrated with night-time ventilation (natural/mechanical) to utilize the full energy-saving potential.
This strategies and technical guidelines for designing environmentally sensitive, energy - efficiency and smart envelope are based on scientific principles (such as climate-specific approaches for minimizing energy consumption, thermal behavior of different facade systems, materials and their properties) and also control of physical environment factors (heat, light, sounds) that improve occupant comfort (thermal, visual, acoustic, and air quality).
In: a) Department of Mechanical and Aerospace Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, United States b) School of Architecture, Rensselaer Polytechnic Institute, Troy, NY 12180, United States [5] H.
Online since: September 2014
Authors: Zhong Ming He, Qing Guo Hu, Yong Wu
Karst collapse, up from its influence factors are divided into natural collapse and man-made collapse.
Natural collapse in karst region is a slow process of natural development, but human engineering construction exacerbated its development, rapidly produced large amounts of collapse in the surface, seriously affect the safety of industrial and agricultural production, railways, highways and so on.
The result is the road collapse type is damaged; (2) collapse of overlaying soil: under depressions, such as karst funnel closed there is generally a negative opening karst terrain morphology, such as sinkholes, large sheets of wide cracks(“melting seam”), which overburden dynamic mechanical effects in the water, the occurrence of ground subsidence caused by damage to the roadbed collapse; (3) destruction of insufficient carrying capacity: mainly derived from the original causes that the soil is the red clay, and bring other mix, the early accumulation is steep terrain type of fall-in-stye accumulation, and it is usually intermittent multi-phase accumulation, vegetation growth in intermittent depression was buried by late accumulation, thus containing humus and closed negative terrain is easy to aggregation of precipitation, resulting in accumulation layer being long-term wet, nature usually being weak and uneven, and the intensity decreasing trend with a top-down, when its carrying capacity
The mechanical properties of rock and soil varies considerably and then become uneven ground, leading to uneven roadbed settlement.
In response to these engineering problems, taking various factors arising from the treatment program into account: Design of slab Culverts and drainage spring in the foot hole, Combination of culverts masonry appropriate support to foot hole of masonry; High - fill roadbed and culvert and the high fill depressions in the soil does not meet load requirements, so foundation treatment should be carried out in theory.
Natural collapse in karst region is a slow process of natural development, but human engineering construction exacerbated its development, rapidly produced large amounts of collapse in the surface, seriously affect the safety of industrial and agricultural production, railways, highways and so on.
The result is the road collapse type is damaged; (2) collapse of overlaying soil: under depressions, such as karst funnel closed there is generally a negative opening karst terrain morphology, such as sinkholes, large sheets of wide cracks(“melting seam”), which overburden dynamic mechanical effects in the water, the occurrence of ground subsidence caused by damage to the roadbed collapse; (3) destruction of insufficient carrying capacity: mainly derived from the original causes that the soil is the red clay, and bring other mix, the early accumulation is steep terrain type of fall-in-stye accumulation, and it is usually intermittent multi-phase accumulation, vegetation growth in intermittent depression was buried by late accumulation, thus containing humus and closed negative terrain is easy to aggregation of precipitation, resulting in accumulation layer being long-term wet, nature usually being weak and uneven, and the intensity decreasing trend with a top-down, when its carrying capacity
The mechanical properties of rock and soil varies considerably and then become uneven ground, leading to uneven roadbed settlement.
In response to these engineering problems, taking various factors arising from the treatment program into account: Design of slab Culverts and drainage spring in the foot hole, Combination of culverts masonry appropriate support to foot hole of masonry; High - fill roadbed and culvert and the high fill depressions in the soil does not meet load requirements, so foundation treatment should be carried out in theory.
Online since: May 2014
Authors: Da Wei Lu
Surface roughness is an important geometry accuracy indicator which has a significant impact on the parts' mechanical properties, service life and reliability in using.
Among the many factors that affect the surface roughness of the grinding process, cutting parameters play a decisive role which includes the grinding wheel speed, the rotating speed of the part and the grinding depth of the wheel.
Yang: Chinese Journal of Mechanical Engineering, Vol. 45 (2009) No.10, p. 254.
Among the many factors that affect the surface roughness of the grinding process, cutting parameters play a decisive role which includes the grinding wheel speed, the rotating speed of the part and the grinding depth of the wheel.
Yang: Chinese Journal of Mechanical Engineering, Vol. 45 (2009) No.10, p. 254.