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Online since: January 2005
Authors: Changjiang Song, Zhen Ming Xu, Jian Guo Li
So the parts obtained by it are incontaminated,
homogeneous,fine microstructure and better mechanical properties, and it has potential applications
to the high melting or active metals, etc [3-6].
Experiments and Results Effect Factors of Temperature Field and Electromagnetic Force.
All the effect factors of the electromagnetic force are also the effect factors of the temperature field.
In addition, there are other factors affect the temperature field in the EMCS process, for example the cooling ability of the coolant and the drawing speed of shaped sample.
The effect factors of the electromagnetic force and the temperature field were summarized.
Experiments and Results Effect Factors of Temperature Field and Electromagnetic Force.
All the effect factors of the electromagnetic force are also the effect factors of the temperature field.
In addition, there are other factors affect the temperature field in the EMCS process, for example the cooling ability of the coolant and the drawing speed of shaped sample.
The effect factors of the electromagnetic force and the temperature field were summarized.
Online since: May 2012
Authors: Wen Ding Li, Yang Zhang, Cong Liu
Nevertheless, poplar has low density and poor mechanical strength.
Bonding strength test According to the test methods of type- II plywood of GB/T 17657-1999《test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels》, test the bonding strength of samples.
The small size effect of micro/nano fibrils augmented the contact area of bean glue and poplar veneer, and then strengthened the interface properties of plywood.
As the second edothermic peak in figure 1, the unfolding of soybean glue was a coopertive transformation accompany with decalescence phenomenon, while the structure and distribution of hydrophobic and hydrophilic groups on the protein surface greatly affect protein–protein and protein–substrate interactions and therefore must affect soy protein gluing strength.
The real line tand1 is dissipation factor of blank soybean glue, and the broken line tand2 dissipation factor of 1% micro/nano fibrils addition soybean glue.
Bonding strength test According to the test methods of type- II plywood of GB/T 17657-1999《test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels》, test the bonding strength of samples.
The small size effect of micro/nano fibrils augmented the contact area of bean glue and poplar veneer, and then strengthened the interface properties of plywood.
As the second edothermic peak in figure 1, the unfolding of soybean glue was a coopertive transformation accompany with decalescence phenomenon, while the structure and distribution of hydrophobic and hydrophilic groups on the protein surface greatly affect protein–protein and protein–substrate interactions and therefore must affect soy protein gluing strength.
The real line tand1 is dissipation factor of blank soybean glue, and the broken line tand2 dissipation factor of 1% micro/nano fibrils addition soybean glue.
Online since: May 2012
Authors: Tian Li, Yang Wang
The goals of the study were two fold, firstly to compare with traditional stud and secondly to search the affect factors of capacity, get calculation equations .We present an analysis of double-nut stud, include different concrete strength and different stud size.
Fig. 1 Specimen of double-nut stud Fig.2 Load-slip curve of two stud Table 1 Details of specimen Specimen Numbers (N/mm2) d(mm) h(mm) d1(mm) h1(mm) d2(mm) h2(mm) D23C25 25 19 100 28.5 9.5 23 20 D23C30 30 19 100 28.5 9.5 23 20 D23C40 40 19 100 28.5 9.5 23 20 D23C50 50 19 100 28.5 9.5 23 20 D26C30 30 19 100 28.5 9.5 26 20 D30C30 30 19 100 28.5 9.5 30 20 D35C30 30 19 100 28.5 9.5 35 20 Performance factors of double-nut stud Concrete strength Fig3. shows the load-slip curve of double-nut stud with different concrete strength C25, C30, C40 and C50.
(1) (2) Where , d for stud diameter, fu for ultimate tensile strength of stud , fck for compressive strength of concrete standard values, Ecm for concrete average elastic modulus, γv for partial safety factor for resistance=1.25, α according to the following circumstance value: When , (3) When , (4) Nie Jianguo[4],get the fixed formula, take calculation formulas into account, which is ECCS in 1981 and Canada steel structure design codes
Table2 Comparation of simulated bearing capacity and calculation equations Specimen Numbers Simulated /kN EC4 Document[4] GB50017-2003 /kN /kN /kN D23C25 122.5 62.7 0.51 91.2 0.74 70.4 0.57 D23C30 129.4 71.2 0.55 99.2 0.77 79.8 0.62 D23C40 130.2 85.4 0.66 99.2 0.76 96.0 0.74 D26C30 164.9 71.2 0.43 99.2 0.60 79.8 0.48 D30C30 196.8 71.2 0.36 99.2 0.50 79.8 0.41 Conclusions In this paper, analysis the new stud, through the comparison with the traditional stud, take the mechanical properties and affect factors into account.
Fig. 1 Specimen of double-nut stud Fig.2 Load-slip curve of two stud Table 1 Details of specimen Specimen Numbers (N/mm2) d(mm) h(mm) d1(mm) h1(mm) d2(mm) h2(mm) D23C25 25 19 100 28.5 9.5 23 20 D23C30 30 19 100 28.5 9.5 23 20 D23C40 40 19 100 28.5 9.5 23 20 D23C50 50 19 100 28.5 9.5 23 20 D26C30 30 19 100 28.5 9.5 26 20 D30C30 30 19 100 28.5 9.5 30 20 D35C30 30 19 100 28.5 9.5 35 20 Performance factors of double-nut stud Concrete strength Fig3. shows the load-slip curve of double-nut stud with different concrete strength C25, C30, C40 and C50.
(1) (2) Where , d for stud diameter, fu for ultimate tensile strength of stud , fck for compressive strength of concrete standard values, Ecm for concrete average elastic modulus, γv for partial safety factor for resistance=1.25, α according to the following circumstance value: When , (3) When , (4) Nie Jianguo[4],get the fixed formula, take calculation formulas into account, which is ECCS in 1981 and Canada steel structure design codes
Table2 Comparation of simulated bearing capacity and calculation equations Specimen Numbers Simulated /kN EC4 Document[4] GB50017-2003 /kN /kN /kN D23C25 122.5 62.7 0.51 91.2 0.74 70.4 0.57 D23C30 129.4 71.2 0.55 99.2 0.77 79.8 0.62 D23C40 130.2 85.4 0.66 99.2 0.76 96.0 0.74 D26C30 164.9 71.2 0.43 99.2 0.60 79.8 0.48 D30C30 196.8 71.2 0.36 99.2 0.50 79.8 0.41 Conclusions In this paper, analysis the new stud, through the comparison with the traditional stud, take the mechanical properties and affect factors into account.
Online since: May 2011
Authors: Bai Yang Lou, Xiao Hua Wei
The effects of process parameters (melt temperature, mold temperature, injection pressure, injection rate) on molding characteristic of micro thin-wall plastic parts are discussed by single factor method, compare the significance of each factors.The simulation results showed that volume could be improved with the increase of melt temperature ,molding temperature, injection pressure and injection rate.
In this paper, a single factor method of injection molding process parameters were simulated.
Therefore, the melt temperature must be well controlled. 2.2 Simulation of Mold Temperature Mold temperature generally refers to plastic parts in contact with the cavity surface temperature, directly affecting the ability of filling plastic melt.
At the same time a high injection rate, so that the melt flow rate increases, increasing the deformation of the melt and increase the consistency of the molecular arrangement and orientation of fibers along the flow direction, making the finished product anisotropic mechanical properties and shrinkage occurs, affecting the product performance and molding quality.
In summary, with the workpiece size reduction, process parameters on the molding properties of the performance is not the same, some in the regular injection of factors that can be ignored in the micro-injection molding may be the main factor, so In the practical application of attention.
In this paper, a single factor method of injection molding process parameters were simulated.
Therefore, the melt temperature must be well controlled. 2.2 Simulation of Mold Temperature Mold temperature generally refers to plastic parts in contact with the cavity surface temperature, directly affecting the ability of filling plastic melt.
At the same time a high injection rate, so that the melt flow rate increases, increasing the deformation of the melt and increase the consistency of the molecular arrangement and orientation of fibers along the flow direction, making the finished product anisotropic mechanical properties and shrinkage occurs, affecting the product performance and molding quality.
In summary, with the workpiece size reduction, process parameters on the molding properties of the performance is not the same, some in the regular injection of factors that can be ignored in the micro-injection molding may be the main factor, so In the practical application of attention.
Online since: February 2021
Authors: Darina A. Konchus, Aleksei V. Sivenkov
Petersburg 199106, Russia
apelagia@bk.ru (corresponding author), bsivenkov@mail.ru
Keywords: stainless steel, QR code, corrosion, contrast, structure, properties, laser heat treatment
Abstract.
The choice of factors was made based on material properties.
Thus, only seven factors were used for variation that varied at two levels.
Tables 1 and 2 show investigated factors and selected levels of variation for applying substrate and code.
You can evaluate the linear effects of factors mixed with pair interactions using contrast.
The choice of factors was made based on material properties.
Thus, only seven factors were used for variation that varied at two levels.
Tables 1 and 2 show investigated factors and selected levels of variation for applying substrate and code.
You can evaluate the linear effects of factors mixed with pair interactions using contrast.
Online since: August 2013
Authors: Yao Dong Gao, You Zheng Ma, Xiang Gang Kong
The front supporter is an important loaded part of the concrete mixer truck and its strength properties directly affect the loading capacity of the truck [2].
In terms of the concrete mixer truck, these simplified load cases need to be considered: in terms of power performance, the highest speed on the straight road; in terms of braking performance, ultimate braking; in terms of handling stability, turning on the level road; in terms of ride comfort, driving on the uneven road; in terms of torsional properties of the chassis, the torsion of the main frame.
On the basis of related design specifications, the safety factor should exceed 1.2.
Therefore, comprehensively considering various factors, the intermediate horizontal steel plate remains unchanged.
The safety factor is increased to 1.3.
In terms of the concrete mixer truck, these simplified load cases need to be considered: in terms of power performance, the highest speed on the straight road; in terms of braking performance, ultimate braking; in terms of handling stability, turning on the level road; in terms of ride comfort, driving on the uneven road; in terms of torsional properties of the chassis, the torsion of the main frame.
On the basis of related design specifications, the safety factor should exceed 1.2.
Therefore, comprehensively considering various factors, the intermediate horizontal steel plate remains unchanged.
The safety factor is increased to 1.3.
Online since: October 2023
Authors: Mohammed Hazim Yaseen, Eethar Thanon Dawood, Syed Fuad Saiyid Hashim, Megat Azmi Megat Johari
Research Significant
The importance of study the affect of adding different percentages of Polyethylene Terephthalate, which was obtained from wasted drinking water bottles, in improving some mechanical properties of concrete, such as rupture coefficient .
The properties of PET used is shown in table 5.
Properties and Design Characteristics of the Fiber Concrete.
The mechanical properties of PET fiber reinforced concrete from recycled bottle wastes.
[23] Topcu, I.B. and Canbaz, M., "Effect of different fibers on the mechanical properties of concrete containing fly ash", Construction and Building Materials, vol. 21, no. 7, pp. 1486–1491, 2007
The properties of PET used is shown in table 5.
Properties and Design Characteristics of the Fiber Concrete.
The mechanical properties of PET fiber reinforced concrete from recycled bottle wastes.
[23] Topcu, I.B. and Canbaz, M., "Effect of different fibers on the mechanical properties of concrete containing fly ash", Construction and Building Materials, vol. 21, no. 7, pp. 1486–1491, 2007
Online since: August 2011
Authors: Fei Sun, Jian Xin Zhang
It is necessary to develop Ni-base single crystal superalloys with favorable high temperature properties and other multiple properties, especially with mechanical properties and microstructural stability in order to satisfy the demands of the sustainable development of high-performance aeroengine[12,13].
Morphology, distribution and quantity of TCP usually influence the mechanical properties of superalloys[80].
The factors that influence the precipitation of TCP phases mainly include the diffusion behaviors and the contents of elements and aging temperature and time, etc.
At present, there are some studies in connection with the formation of TCP phases in order to understand its influencing factors.
Effect of Ru on the Microstructures and Stress Rupture Properties of a Single Crystal Superalloys.
Morphology, distribution and quantity of TCP usually influence the mechanical properties of superalloys[80].
The factors that influence the precipitation of TCP phases mainly include the diffusion behaviors and the contents of elements and aging temperature and time, etc.
At present, there are some studies in connection with the formation of TCP phases in order to understand its influencing factors.
Effect of Ru on the Microstructures and Stress Rupture Properties of a Single Crystal Superalloys.
Online since: April 2013
Authors: Tomáš Pospíšil, Libor Matějka, Alena Kalužová, Darina Dostálová, Jan Pěnčík, Libor Matějka
Decisive properties in choosing the materials to be applied include mainly the coefficient of thermal conductivity, volume density, compressive strength and water absorption.
Value of the thermal conductivity is however not constant, it is influenced by many factors.
Due to the thermoplastic properties of polymers the composite material is produced in electric furnace.
The weight ratio and the mutual arrangement of layers of binder and filler affect the thermally technical and mechanical properties of composite.
Measurement of properties of samples was done by a straight probe with a range from 0.04 to 0.30 W/mK.
Value of the thermal conductivity is however not constant, it is influenced by many factors.
Due to the thermoplastic properties of polymers the composite material is produced in electric furnace.
The weight ratio and the mutual arrangement of layers of binder and filler affect the thermally technical and mechanical properties of composite.
Measurement of properties of samples was done by a straight probe with a range from 0.04 to 0.30 W/mK.
Online since: March 2014
Authors: Luqman Chuah Abdullah, Russly Abdul Rahman, Maryam Jokar
Thermal, mechanical and barrier properties of LBL deposited nanocomposite films were investigated.
Thermal Properties.
Mechanical properties.
Mechanical properties of LBL deposited films were given in table 2.
The mechanical properties of LDPE films are affected by presence of silver nanoparticles and also chitosan coating.
Thermal Properties.
Mechanical properties.
Mechanical properties of LBL deposited films were given in table 2.
The mechanical properties of LDPE films are affected by presence of silver nanoparticles and also chitosan coating.