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Online since: December 2011
Authors: Cui Jiao Liao, Qing Ming Weng, Hua Xu
The forming of the interstice pore is concerned with these factors such as the molding density, the powder particle size, the particle distribution, the shape of the particle and the compaction property of the powder.
So, the generate pore is decided by these factors such as the style of the inducer, the particle size, the shape of the particle and the added amount.
The sintering temperature is an important technology parameter which decides the mechanical property of the diamond segment.
The pressing pressure is another important technology parameter which decides the mechanical property of the diamond segment.
Scanning electron microscopic study and mechanical property examination of a bond bridge: Development of a porous metal bonded diamond wheel.
So, the generate pore is decided by these factors such as the style of the inducer, the particle size, the shape of the particle and the added amount.
The sintering temperature is an important technology parameter which decides the mechanical property of the diamond segment.
The pressing pressure is another important technology parameter which decides the mechanical property of the diamond segment.
Scanning electron microscopic study and mechanical property examination of a bond bridge: Development of a porous metal bonded diamond wheel.
Online since: July 2014
Authors: Wei Chen, Chao Chao Ma, Xiang Peng Li, Ting Ting Chen, Xiao Yang Wang
.; class Ⅰ fly ash; medium sand(with fineness modulus of 2.46); gravel(with the maximum size of 26.5mm); polycarboxylic acid superplasticizer; the chopped basalt fiber, which is made in TuoXin Basalt Industrial Co. of Si Chuan province, Main mechanical property of basalt fiber is shown in Table1.
Table 1 Main mechanical property of basalt fiber Diameter (μm) Density (kg.cm-3) Elasticity modulus (Gpa) Tensile strength (Mpa) Elongation at fracture (﹪) 15 2.65 95~115 3300~4500 2.4~3.0 Experiment Design.
Test Results and Theoretical Analysis Cracking load and factors.
L-0-0 L-1-12 L-2-12 L-1-30 L-2-30 Fig. 2 Collapse state of beams in shear compression section Cracking Development and Factors.
Based on Fig.1 and the principle of composite materials, the multiply of the volume ratio and the aspect ratio of fiber which is the main parameter to affect the mechanical properties of fiber concrete can be defined as the characteristic parameter of basalt fiber [5] and can be expressed as .
Table 1 Main mechanical property of basalt fiber Diameter (μm) Density (kg.cm-3) Elasticity modulus (Gpa) Tensile strength (Mpa) Elongation at fracture (﹪) 15 2.65 95~115 3300~4500 2.4~3.0 Experiment Design.
Test Results and Theoretical Analysis Cracking load and factors.
L-0-0 L-1-12 L-2-12 L-1-30 L-2-30 Fig. 2 Collapse state of beams in shear compression section Cracking Development and Factors.
Based on Fig.1 and the principle of composite materials, the multiply of the volume ratio and the aspect ratio of fiber which is the main parameter to affect the mechanical properties of fiber concrete can be defined as the characteristic parameter of basalt fiber [5] and can be expressed as .
Online since: July 2015
Authors: Mehdi Mostofi, Hossein Amirabadi
Buckling Optimization of Composite Shells by Utilizing Finite Element Analysis, Neural Networks and Genetic Algorithm
Hossein Amirabadi1,a and Mehdi Mostofi2,b
1Department of Mechanical Engineering, Abadeh Branch, Islamic Azad University, Abadeh, Iran
2Department of Mechanical Engineering, East Tehran Branch, Islamic Azad University, Iran
ahossin_amirabadi@yahoo.com, bmehdi_mostofi@yahoo.com
Keywords: Composite shells, buckling, optimization, neural network, genetic algorithm.
In addition, the kind of goal function significantly affects network functionality.
Material is a Carbon/Epoxy called T300/976 commercially and has the following properties: , , , , , thickness (t) = 0.1429 mm.
The compared shell has geometrical and mechanical properties as follow [11]: Table 2.
Predicting of only one optimized point by optimization algorithm can be due to different factors, such as function shape is affected in a wider range, in such a manner that, with change in numerical optimization parameters, convergence will be occurred faster.
In addition, the kind of goal function significantly affects network functionality.
Material is a Carbon/Epoxy called T300/976 commercially and has the following properties: , , , , , thickness (t) = 0.1429 mm.
The compared shell has geometrical and mechanical properties as follow [11]: Table 2.
Predicting of only one optimized point by optimization algorithm can be due to different factors, such as function shape is affected in a wider range, in such a manner that, with change in numerical optimization parameters, convergence will be occurred faster.
Online since: August 2018
Authors: Michal Kotoul, Kateřina Štegnerová, Oldřich Ševeček, Zdeněk Majer, Zdeněk Machů
In this paper, a possible concept of piezoelectric harvester with potentially improved electro-mechanical properties is studied.
The weight function procedure developed in [12] simplifies the determination of the stress intensity factor K.
Due to the high stress concentration around the crack tip and different material properties of each component, a significantly refined mesh in the vicinity of the crack tip and along the prospective crack path through the laminate was used.
To propagate such crack further, significant additional mechanical load has to be applied.
Munz: Stress Intensity Factor and Weight Functions, Computational Mechanics Publication, 1997
The weight function procedure developed in [12] simplifies the determination of the stress intensity factor K.
Due to the high stress concentration around the crack tip and different material properties of each component, a significantly refined mesh in the vicinity of the crack tip and along the prospective crack path through the laminate was used.
To propagate such crack further, significant additional mechanical load has to be applied.
Munz: Stress Intensity Factor and Weight Functions, Computational Mechanics Publication, 1997
Online since: July 2010
Authors: Francesco Delogu, Elisabetta Arca, Igor V. Shvets
For example, the coherence length of phonons affects heat conduction, whereas magnetic properties
are determined by the size of magnetic domains [1-4].
The network geometry depends on a number of factors, most of which have been already mentioned above.
The technological potential of MWP directly originates from the properties of microwaves.
Restricted to materials with suitable dielectric properties.
Eckert, in: Nanostructured materials: Processing, properties, and applications, edited by C.C.
The network geometry depends on a number of factors, most of which have been already mentioned above.
The technological potential of MWP directly originates from the properties of microwaves.
Restricted to materials with suitable dielectric properties.
Eckert, in: Nanostructured materials: Processing, properties, and applications, edited by C.C.
Online since: May 2003
Authors: Masao Tanihara, Chikara Ohtsuki, Hajime Iwasaki, Toshiki Miyazaki
Chemical durability and mechanical property were
examined before and after coating with HPC.
Thus prepared porous α-TCP is expected to be useful as a novel bone substitute by incorporating with drugs or osteoinductive factors.
In addition, novel functions can be provided with the porous TCP, if drugs or osteoinductive factors are incorporated with it.
We investigated chemical durability and mechanical property of porous α-TCP before and after coating with HPC.
Furthermore novel bone-repairing materials with ability to enhance bone regeneration can be designed by combination of drugs or osteoinductive factors.
Thus prepared porous α-TCP is expected to be useful as a novel bone substitute by incorporating with drugs or osteoinductive factors.
In addition, novel functions can be provided with the porous TCP, if drugs or osteoinductive factors are incorporated with it.
We investigated chemical durability and mechanical property of porous α-TCP before and after coating with HPC.
Furthermore novel bone-repairing materials with ability to enhance bone regeneration can be designed by combination of drugs or osteoinductive factors.
Online since: October 2019
Authors: Yan Nian Zhang, Jun Xie
Introduction
Neoprene has good aging property [1~3], but its physics-mechanical properties deteriorate under thermal aging condition [4].
The deterioration of mechanical properties of laminated neoprene bridge bearing pads in line with rising aging time is a serious concern, but there is a lack of experimental data on the relationship between increased aging time and its mechanical properties.
The mechanical properties of specimens are shown in table 2.
On the magnetic, mechanical and rheological properties of rubber–nickel nanocomposites.
The affect of the environmental temperature on the neoprene rubber bearings the shear properties [J].
The deterioration of mechanical properties of laminated neoprene bridge bearing pads in line with rising aging time is a serious concern, but there is a lack of experimental data on the relationship between increased aging time and its mechanical properties.
The mechanical properties of specimens are shown in table 2.
On the magnetic, mechanical and rheological properties of rubber–nickel nanocomposites.
The affect of the environmental temperature on the neoprene rubber bearings the shear properties [J].
Research of Elastic Deformation of Rubber Ink Roller and Ink Flow Characteristics on Two Ink Rollers
Online since: November 2012
Authors: Hong Yan Chu, Li Gang Cai, Jun Tao Zhao, Lei Su
The rubber roller’s deformation and ink transferring rate under different conditions are got, and factors, such as rotation velocity, deformation of rubber roller, ink layer thickness between two rollers, which affect the ink flow and transferring rate are analyzed.
Ink transferring rate is a significant factor for researching the ink flow field.
Fig. 1 Process of ink flow Fig. 2 Process of ink transferring Then the ink transferring rate is (1) It is related to materials, surface finish, peripheral speed, pressure between rollers, the property of ink, temperature and the ink layer thickness before rollers contact.
Factors that affect ink transferring rate and ink flow field are analyzed, such as the pressure and ink layer thickness between two rollers, ink rollers’ rotation velocity.
The foundation of computational fluid dynamics and its application [M].Mechanical Industry Press (2007) [5] Guangyi Pu.
Ink transferring rate is a significant factor for researching the ink flow field.
Fig. 1 Process of ink flow Fig. 2 Process of ink transferring Then the ink transferring rate is (1) It is related to materials, surface finish, peripheral speed, pressure between rollers, the property of ink, temperature and the ink layer thickness before rollers contact.
Factors that affect ink transferring rate and ink flow field are analyzed, such as the pressure and ink layer thickness between two rollers, ink rollers’ rotation velocity.
The foundation of computational fluid dynamics and its application [M].Mechanical Industry Press (2007) [5] Guangyi Pu.
Online since: January 2010
Authors: Akira Watazu, Ichinori Shigematsu, Naobumi Saito, Kazutaka Suzuki, Xin Sheng Huang
The AZ61 magnesium alloy was subjected to the differential speed rolling at different
rolling conditions including reduction per pass, rotation speed ratio and rolling temperature, and the
influences of the rolling conditions on microstructure, texture, mechanical properties and
formability of the as-rolled sheets were investigated.
Introduction Magnesium (Mg) alloys have attracted interest due to their excellent specific properties that make them potentially suitable candidates for replacing heavier materials including steel and aluminum alloys in automotive and electronic industries.
In this study, the AZ61 alloy was subjected to the DSR at different rolling conditions including reduction per pass (RPP), rotation speed ratio (RSR) and billet temperature, and microstructure, texture, mechanical properties and formability of the as-rolled sheets were investigated aiming at an achievement of the Mg alloy sheet with a combination of a high strength and a superior formability.
The average values of the mechanical properties were given from the values of the three tensile directions by the following expression: )/4TDXº45X2 RD X(X ++= .
Summary The influences of the rolling conditions on microstructure, texture, mechanical properties and formability of the as-rolled AZ61 alloy sheets were investigated.
Introduction Magnesium (Mg) alloys have attracted interest due to their excellent specific properties that make them potentially suitable candidates for replacing heavier materials including steel and aluminum alloys in automotive and electronic industries.
In this study, the AZ61 alloy was subjected to the DSR at different rolling conditions including reduction per pass (RPP), rotation speed ratio (RSR) and billet temperature, and microstructure, texture, mechanical properties and formability of the as-rolled sheets were investigated aiming at an achievement of the Mg alloy sheet with a combination of a high strength and a superior formability.
The average values of the mechanical properties were given from the values of the three tensile directions by the following expression: )/4TDXº45X2 RD X(X ++= .
Summary The influences of the rolling conditions on microstructure, texture, mechanical properties and formability of the as-rolled AZ61 alloy sheets were investigated.
Online since: February 2013
In Jilin University, Ma's lab is actively engaged in the preparation of
biodegradable films and study of their mechanical properties.
Wang et al investigated the effect of drying time, drying temperature, plasticizer and thickening agents on the mechanical properties of cabbage-based edible films, and the results are presented in their paper 'Mechanical properties of Cabbage-based Edible Films'.
Zhong et al studied mechanical properties of methylcellulose-based films containing stearic acids, and the influence of the microwave and ultrasonic synergistic effect on properties of methylcellulose/stearic acids films, as well as how fatty acids may affect the properties of methylcellulose-based bi-layer edible films.
Li et al investigated two factors including fermentation temperature and extra carbon.
In the paper 'Preparation and properties of thermo-sensitive resin for processless CTP plate' a new type of thermo-sensitive resin is prepared.
Wang et al investigated the effect of drying time, drying temperature, plasticizer and thickening agents on the mechanical properties of cabbage-based edible films, and the results are presented in their paper 'Mechanical properties of Cabbage-based Edible Films'.
Zhong et al studied mechanical properties of methylcellulose-based films containing stearic acids, and the influence of the microwave and ultrasonic synergistic effect on properties of methylcellulose/stearic acids films, as well as how fatty acids may affect the properties of methylcellulose-based bi-layer edible films.
Li et al investigated two factors including fermentation temperature and extra carbon.
In the paper 'Preparation and properties of thermo-sensitive resin for processless CTP plate' a new type of thermo-sensitive resin is prepared.