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Online since: November 2012
Authors: Seiji Ban, Makoto Noda, Hiroyuki Arikawa, Takahito Kanie, Jiro Tsuruki, Hiroshi Kono, Yuji Okuda
The results showed that all the four factors statistically affected the bonding strength (p<0.01).
Introduction Zirconia is widely used in biomedical field as a material for prosthetic apparatus because of its excellent mechanical and chemical properties.
Our previous studies suggested that, core-veneer bonding is slightly related to mechanical interlocking and greatly affected by firing temperature of veneering porcelain.
Their contributions show all factors significantly affected bonding strength.
Whereas factor of veneered porcelain shows the lowest.
Introduction Zirconia is widely used in biomedical field as a material for prosthetic apparatus because of its excellent mechanical and chemical properties.
Our previous studies suggested that, core-veneer bonding is slightly related to mechanical interlocking and greatly affected by firing temperature of veneering porcelain.
Their contributions show all factors significantly affected bonding strength.
Whereas factor of veneered porcelain shows the lowest.
Online since: July 2015
Authors: Vesselin Michailov, Victor A. Karkhin, Sergei Yu. Ivanov, Pavel N. Homich, Oleg V. Panchenko
Prediction of Microstructure and Mechanical Properties
of Weld Metal in Hybrid Laser-arc Welding
V.A.
Calculation technique in order to reconstruct the 3D temperature field and predict the microstructure and mechanical properties of the weld metal in hybrid laser-arc welding is developed.
Prediction of Microstructure and Mechanical Properties Solution of the inverse heat conduction problem presents all parameters of the apparent heat source.
The mechanical properties can be evaluated under calculated thermal cycle theoretically by using known models [2] or experimentally by testing specimens.
The proposed procedure allows to evaluate the distribution of microstructure and mechanical properties of weld metal with consideration for real weld geometry.
Calculation technique in order to reconstruct the 3D temperature field and predict the microstructure and mechanical properties of the weld metal in hybrid laser-arc welding is developed.
Prediction of Microstructure and Mechanical Properties Solution of the inverse heat conduction problem presents all parameters of the apparent heat source.
The mechanical properties can be evaluated under calculated thermal cycle theoretically by using known models [2] or experimentally by testing specimens.
The proposed procedure allows to evaluate the distribution of microstructure and mechanical properties of weld metal with consideration for real weld geometry.
Online since: March 2010
Authors: Guo Dong Wang, Zhong Zhao, Xian Lei Hu
The factors affect the finishing temperature of the plate were analyzed, including
the holding time during control rolling, rolling speed, slab temperature and pass number.
Introduction Finishing temperature, which influences the mechanical properties and microstructure, is an important parameter during rolling process.
So high-precision and practical temperature model are the base of predicted accuracy of online rolling force model and microstructure and properties model, which are used to ensure the final product dimensional accuracy and mechanical properties.
Factors affecting plate finishing temperature Holding time.
Analysis of rolling pass number affecting the finishing temperature of media plate.
Introduction Finishing temperature, which influences the mechanical properties and microstructure, is an important parameter during rolling process.
So high-precision and practical temperature model are the base of predicted accuracy of online rolling force model and microstructure and properties model, which are used to ensure the final product dimensional accuracy and mechanical properties.
Factors affecting plate finishing temperature Holding time.
Analysis of rolling pass number affecting the finishing temperature of media plate.
Online since: April 2017
Authors: Xiao Xing Yan, Zhi Hui Wu, Huan Ye, Wei Xu, Yun Ting Cai, Ye Ping Yuan
However, when nano MgCO3 content was higher than 4%, the mechanical properties of coatings decreased.
Therefore, how to improve the mechanical properties has become the focus of the study.
The main factors affecting the modification of waterborne UV-curing wood coatings were the content of MgCO3, drying temperature and time of UV radiation [12].
When these three factors were optimized by orthogonal experiment, the mechanical properties of coatings could be optimized.
The three factors have effect on mechanical property of waterborne UV-curing wood coatings.
Therefore, how to improve the mechanical properties has become the focus of the study.
The main factors affecting the modification of waterborne UV-curing wood coatings were the content of MgCO3, drying temperature and time of UV radiation [12].
When these three factors were optimized by orthogonal experiment, the mechanical properties of coatings could be optimized.
The three factors have effect on mechanical property of waterborne UV-curing wood coatings.
Online since: October 2015
Authors: Pavel Raschman, Matej Špak
Different properties of single fly ashes are affected by various factors, e.g. the coal quality, different combustion conditions, heating plant operation conditions.
Mechanical properties of fly ash based mortars after 7 days of hardening [N.mm-2].
Therefore, achieved mechanical properties of specimens based on particular fly ashes were different due to the variability in the properties of the tested fly ash.
The total content of leached ions affected the mechanical properties of mortars based on alkali activated fly ashes.
Ban, An overview on the influence of various factors on the properties of geopolymer concrete derivedrom industrial by-products, Constr.
Mechanical properties of fly ash based mortars after 7 days of hardening [N.mm-2].
Therefore, achieved mechanical properties of specimens based on particular fly ashes were different due to the variability in the properties of the tested fly ash.
The total content of leached ions affected the mechanical properties of mortars based on alkali activated fly ashes.
Ban, An overview on the influence of various factors on the properties of geopolymer concrete derivedrom industrial by-products, Constr.
Online since: June 2019
Authors: Radka Pernicová, Monika Utěšená, Jan Sestak
The paper deals with the properties, quality and durability of the exposed concrete.
Chemical and physicochemical processes in which concrete breaks while reducing the main physical and mechanical properties of concrete are collectively called concrete corrosion.
These are mechanical, physical and chemical properties.
The colors balance of concrete influences many factors.
Another important factor affecting coloring is the compaction process of the deposited mixture.
Chemical and physicochemical processes in which concrete breaks while reducing the main physical and mechanical properties of concrete are collectively called concrete corrosion.
These are mechanical, physical and chemical properties.
The colors balance of concrete influences many factors.
Another important factor affecting coloring is the compaction process of the deposited mixture.
Online since: June 2012
Authors: Hong De Wang, Qiang Yang, Wei Cui Ding, Yong Long Gao, Shu Hua Pan
The results show that the reservoir landslide stability affected by the seepage field changes with changing reservoir level is controlled by a variety of factors, including the hydrodynamic pressure, hydrostatic pressure, uplift force, physical and mechanical properties (с, φ value change).
When the water level fluctuates at a lower rate, the pore water pressure, uplift force and physical and mechanical properties are the dominant factors.
Here are the impact factors below [4, 7].
Physico-mechanical properties changes.
But after the stability coefficient reaches the minimum, the change of physical and mechanical properties (с, φ) starts to be the dominant factor instead
When the water level fluctuates at a lower rate, the pore water pressure, uplift force and physical and mechanical properties are the dominant factors.
Here are the impact factors below [4, 7].
Physico-mechanical properties changes.
But after the stability coefficient reaches the minimum, the change of physical and mechanical properties (с, φ) starts to be the dominant factor instead
Online since: December 2010
Authors: Shi Min Zhang, Zhi Ding, Hao Miao Yang, Kai Yu
Xiamen, Fujian, 361006, China
azhangsm@zucc.edu.cn, byukai@yahoo.com.cn, cdingz@zucc.edu.cn, dyhm@qq.com
Key Words: Flexible Composite Pile Foundation; FEM Analysis; Load; Settlement
Abstract: The pile work on the complex properties of three-dimensional finite element analysis has been made by building-up one 4x4 soft pole.
Having studied on the factors which affect the flexibility pole compound foundation settlement factor in foundation, include the level of vertical load, elastic modulus of the pile, cushion thickness and elastic modulus.
The results show that: the impact of soft pile settlement of the factors, the level of vertical load and pile elastic modulus greater impact cushion modulus of elasticity and thickness of the less affected.
Table 1 The target of materials’ physical and mechanical properties Materials involved in the calculations Thickness or length Side resistance limits /kPa End resistance limits /kPa The ultimate bearing capacity of single pile /kN ES c MPa kPa ° Bearing platform 0.5 28000 0.2 Sand cushion 0.3 80 0.3 Flexible pile 10 300 120 0.25 The upper soil 5 28 5 12 15 0.4 The Subsoil 20 10 100 120 19 25 0.3 In the face X = 0 and Y = 0 are the symmetry constraint; direction Z is calculated as 2.5 times the depth of pile length and set to hinge constraint.
In the settlement factors about flexible pile of composite foundation, Vertical load levels and pile elastic modulus have a greater impact, elastic modulus and thickness of cushion have small impact.
Having studied on the factors which affect the flexibility pole compound foundation settlement factor in foundation, include the level of vertical load, elastic modulus of the pile, cushion thickness and elastic modulus.
The results show that: the impact of soft pile settlement of the factors, the level of vertical load and pile elastic modulus greater impact cushion modulus of elasticity and thickness of the less affected.
Table 1 The target of materials’ physical and mechanical properties Materials involved in the calculations Thickness or length Side resistance limits /kPa End resistance limits /kPa The ultimate bearing capacity of single pile /kN ES c MPa kPa ° Bearing platform 0.5 28000 0.2 Sand cushion 0.3 80 0.3 Flexible pile 10 300 120 0.25 The upper soil 5 28 5 12 15 0.4 The Subsoil 20 10 100 120 19 25 0.3 In the face X = 0 and Y = 0 are the symmetry constraint; direction Z is calculated as 2.5 times the depth of pile length and set to hinge constraint.
In the settlement factors about flexible pile of composite foundation, Vertical load levels and pile elastic modulus have a greater impact, elastic modulus and thickness of cushion have small impact.
Online since: November 2015
Authors: S. Saravanan, Pandian Pitchipoo
Optimization of GMAW parameters to improve the mechanical properties
S.Saravanan1, a*, P.Pitchipoo2, b
1&2 Department of Mechanical Engineering, P.S.R.
Shih Jing-Shiang et al [2] optimized the pulsed GMAW process parameters used for aluminum alloy plate to improve the mechanical properties.
The results of several literatures [8-12] have revealed that welding parameters such as welding voltage, welding current, gas flow rate, wire feed rate, wire size and welding speed significantly affect the mechanical properties of welded joints.
Selection of an appropriate orthogonal array for experiments depends on the number of factors and the number of levels.
However, GRA requires less data and can analyze many factors that can overcome the disadvantages of statistics methods.
Shih Jing-Shiang et al [2] optimized the pulsed GMAW process parameters used for aluminum alloy plate to improve the mechanical properties.
The results of several literatures [8-12] have revealed that welding parameters such as welding voltage, welding current, gas flow rate, wire feed rate, wire size and welding speed significantly affect the mechanical properties of welded joints.
Selection of an appropriate orthogonal array for experiments depends on the number of factors and the number of levels.
However, GRA requires less data and can analyze many factors that can overcome the disadvantages of statistics methods.
Online since: July 2014
Authors: Gang Xue, Chun Feng Wu
Mechanical Properties of Surface Mortar with
Waste Crumb Rubber
Gang Xue , Chunfeng Wu
Architecture and Civil Engineering School, Inner Mongolia University of Science and Technology, Baotou 014010, China
Key Words: waste rubber;surface mortar;mechanical properties
Abstract.
The results show that rubber particles mortar possess excellent toughness, impact resistance and heat aging properties.
The mechanical properties of rubber particle surface mortar should accord with national standards, meanwhile,the impact resistance and heat aging should guarantee to meet the service requirements.
So the material can resist the change of external environment factors and keep the original fine performance without damage during the long-term use [3-4].
Mechanical properties of fiber reinforced concrete after high temperature [J].
The results show that rubber particles mortar possess excellent toughness, impact resistance and heat aging properties.
The mechanical properties of rubber particle surface mortar should accord with national standards, meanwhile,the impact resistance and heat aging should guarantee to meet the service requirements.
So the material can resist the change of external environment factors and keep the original fine performance without damage during the long-term use [3-4].
Mechanical properties of fiber reinforced concrete after high temperature [J].