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Online since: March 2015
Authors: Hai Ying Yu, Jun Hua, Xiu Li Zhou, Jiu Yang Hou
Study on data fusion algorithms of hot-pressing measurement process of wood-based panels
Haiying Yu1,a, Jun Hua2,b *, Xiuli Zhou2,3,c , Jiuyang Hou1,d
1 College of Computer and Information Engineering, Heilongjiang University of Science and Technology, Harbin, China
2 College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin, China
3 College of Electrical and Information Engineering, Northeast Agricultural University, Harbin, China
a yuhying2004@163.com, c xlzhou@neau.edu.cn, d houjy2000@163.com
b * Corresponding author: Jun Hua, Ph.
In the factors that influence hot pressing process, pressure, temperature and time span occupy a leading position.
The pressure (mostly water vapour pressure) plays an important role in stress relaxation phase which directly affects whether the sheet is getting layered or blistered thus affects the mechanical properties and heat-transfer interaction.
If it substitutes the corresponding parameter in Eq.10 and Eq.11, the results are (14) (15) D-S evidence theory fusion algorithm on decision-making level Suppose U is a frame of discernment which is a set of mutually exclusive propositions and denotes the power set of U, the mass function m (basic probability assignment, or BPA) that is defined on as (16) Here, m is defined for every element A of such that the mass value m(A) belongs to the [0, 1] interval with the following property[4]: (17) Where is the empty set.
Two bodies of evidence m1 and m2 with focal elements and of and belief functions and on the same frame U respectively, can be combined to yield a new mass function m by a combination rule [5]: (22) (23) where K is called conflict factor measuring the degrees of conflict between the different bodies of evidence.
In the factors that influence hot pressing process, pressure, temperature and time span occupy a leading position.
The pressure (mostly water vapour pressure) plays an important role in stress relaxation phase which directly affects whether the sheet is getting layered or blistered thus affects the mechanical properties and heat-transfer interaction.
If it substitutes the corresponding parameter in Eq.10 and Eq.11, the results are (14) (15) D-S evidence theory fusion algorithm on decision-making level Suppose U is a frame of discernment which is a set of mutually exclusive propositions and denotes the power set of U, the mass function m (basic probability assignment, or BPA) that is defined on as (16) Here, m is defined for every element A of such that the mass value m(A) belongs to the [0, 1] interval with the following property[4]: (17) Where is the empty set.
Two bodies of evidence m1 and m2 with focal elements and of and belief functions and on the same frame U respectively, can be combined to yield a new mass function m by a combination rule [5]: (22) (23) where K is called conflict factor measuring the degrees of conflict between the different bodies of evidence.
Online since: September 2013
Authors: Bing Zhai, Ping Huai Mao, Jing Xi Li
Coal mine horizontal belt extension transfer machine is designed in order to solve the mine loading efficiency is not high; especially the most loading mechanical failed to solve continuous loading problem.
Through the study of tractor, summarizes the design methods for other similar mechanical similar provide a theory basis for the design.
First of all, wagon box auxiliary frame to motor and reducer device fixed; Secondly, the wagon box to open a vent, used to such as motor cooling; Third, the wagon box wall open a mouth, to drops raw coal which fell into the wagon box interior from the mouth, do not affect a tractor work.
Unit type and Material properties.
In addition, we need to enter the material properties, after look-up table we get Q235 steel attribute parameters are as follows: Density: Poisson's ratio: Elastic modulus: Mesh, Definition constraint and Load.
Through the study of tractor, summarizes the design methods for other similar mechanical similar provide a theory basis for the design.
First of all, wagon box auxiliary frame to motor and reducer device fixed; Secondly, the wagon box to open a vent, used to such as motor cooling; Third, the wagon box wall open a mouth, to drops raw coal which fell into the wagon box interior from the mouth, do not affect a tractor work.
Unit type and Material properties.
In addition, we need to enter the material properties, after look-up table we get Q235 steel attribute parameters are as follows: Density: Poisson's ratio: Elastic modulus: Mesh, Definition constraint and Load.
Online since: July 2011
Authors: Yi Lei Li, Guoan Chen, Zhen Cai Zhu
The emulsion pump, one of the most important hydraulic components, has also been used in more and more industry fields, because emulsion has flame retardance and low cost besides most properties of hydraulic oil.
Diagram of recommended test system In coal mine industry, the emulsion pump, like a heart to a man, converts mechanical energy into hydraulic energy and pumps high-pressure emulsion to hydraulic support or single prop, and hence has a great influence on the reliability of the mechanical equipment and safety of coal miners in the coal-face.
This test system has two crucial factors.
The other one is the displacement of both the major pump and hydraulic motor, which affects the rotary speed of test pump, namely the flow rate of test pump.
The left cylinder with high pressure emulsion flow pumped from the test pump pushes the right cylinder, converting the hydraulic energy into mechanical energy.
Diagram of recommended test system In coal mine industry, the emulsion pump, like a heart to a man, converts mechanical energy into hydraulic energy and pumps high-pressure emulsion to hydraulic support or single prop, and hence has a great influence on the reliability of the mechanical equipment and safety of coal miners in the coal-face.
This test system has two crucial factors.
The other one is the displacement of both the major pump and hydraulic motor, which affects the rotary speed of test pump, namely the flow rate of test pump.
The left cylinder with high pressure emulsion flow pumped from the test pump pushes the right cylinder, converting the hydraulic energy into mechanical energy.
Online since: May 2016
Authors: Yao Dong Gu, Dong Sun, Justin Fernandez, Gusztáv Fekete
Different outsole configurations provide altered traction characteristics that influence running time [11-12], traction perception [13], ground reaction force [14], and mechanical traction properties [15].
However, these high mechanical traction properties caused reduced running performance of subjects compared to firm ground design and experimental prototype.
Frontal plane knee mechanics are considered important factors in ACL injuries.
Slip resistance and foot fixation are two potential factors of non-contact injuries.
Higher GRF and VALR have both been reported as risk factors associated with lower extremity injuries.
However, these high mechanical traction properties caused reduced running performance of subjects compared to firm ground design and experimental prototype.
Frontal plane knee mechanics are considered important factors in ACL injuries.
Slip resistance and foot fixation are two potential factors of non-contact injuries.
Higher GRF and VALR have both been reported as risk factors associated with lower extremity injuries.
Online since: March 2011
Authors: Martin Zubeil, Karl Roll, Marion Merklein
Owing to the reduced bending properties and requirements concerning the ductility of metal sheets made from aluminum alloys in comparison to metal sheets made of steel, small hemming radii with a small radius operating line are difficult to produce.
The influencing factors that have an effect on the forming result during roller hemming are shown in Fig. 5.
The essential influencing factors are to be examined with a definite number of tests [9, 10, 11].
The influencing factors were sorted corresponding to significance so as to determine the influencing factors for the roller hemming process.
These two factors were shown to be the significant factors in the main effect analysis.
The influencing factors that have an effect on the forming result during roller hemming are shown in Fig. 5.
The essential influencing factors are to be examined with a definite number of tests [9, 10, 11].
The influencing factors were sorted corresponding to significance so as to determine the influencing factors for the roller hemming process.
These two factors were shown to be the significant factors in the main effect analysis.
Online since: May 2016
Authors: Lek Sikong, Peerawas Kongsong, Vishnu Rachpech, Niyomwas Sutham
The effects of nitrogen doping on coating morphology, physical properties, and FA degradation rates were experimentally determined.
Dopants affect the UV–vis spectra by inhibiting recombination of electron–hole pairs, here especially for the N–doped specimens.
This form Ti–O–N linkages, reducing the band gap energy beneficially for the photocatalytic properties of 40N/SnO2/TiO2 films.
According to prior reports, various factors affect the photoactivity of TiO2 photocatalysts, including crystallinity, grain size, specific surface area, surface morphology and surface state (surface OH radicals), and these factors are not independent but closely related to each other [6].
Nitrogen doping of SnO2/TiO2 composite films affect surface smoothness, crystallite size, and band gap energy of the films.
Dopants affect the UV–vis spectra by inhibiting recombination of electron–hole pairs, here especially for the N–doped specimens.
This form Ti–O–N linkages, reducing the band gap energy beneficially for the photocatalytic properties of 40N/SnO2/TiO2 films.
According to prior reports, various factors affect the photoactivity of TiO2 photocatalysts, including crystallinity, grain size, specific surface area, surface morphology and surface state (surface OH radicals), and these factors are not independent but closely related to each other [6].
Nitrogen doping of SnO2/TiO2 composite films affect surface smoothness, crystallite size, and band gap energy of the films.
Online since: December 2007
Authors: Dong Sam Park, Quan Qia Jin, Eun Je Seong, Jin Yong Han, Woo Sik Yoo
The established equation shows that the blasting pressure was the main
factor influencing the material removal and surface roughness.
The demand has been increasing for the development of micromachining technologies for these difficult-to-machine materials due to their properties.
Using conventional machining technologies has been difficult because of excessive heat in the affected zone, and mechanical machining methods such as ultrasonic machining, grinding and polishing have limitations in accuracy and productivity.
Powder blasting, due to its high productivity and thin heat-affected layers caused by material removal, is considered as an attractive and effective method for machining hard and brittle materials [4-8].
Elwenspoek, High Resolution Powder Blast Micromachining, Proceedings of the IEEE Micro Electro Mechanical Systems (2000), p. 769
The demand has been increasing for the development of micromachining technologies for these difficult-to-machine materials due to their properties.
Using conventional machining technologies has been difficult because of excessive heat in the affected zone, and mechanical machining methods such as ultrasonic machining, grinding and polishing have limitations in accuracy and productivity.
Powder blasting, due to its high productivity and thin heat-affected layers caused by material removal, is considered as an attractive and effective method for machining hard and brittle materials [4-8].
Elwenspoek, High Resolution Powder Blast Micromachining, Proceedings of the IEEE Micro Electro Mechanical Systems (2000), p. 769
Online since: February 2006
Authors: Niels Hammer, Jens Rautenberg, Klaus Weinert
To obtain detailed process knowledge also FEA-Simulations of the thermo-mechanical
loads affecting the workpiece during the process are performed.
Machining thin-walled, reinforced, and non-reinforced extruded light metal profiles and their resulting framework structures is often regarded as critical because of manifold factors influencing the machining process.
For the experimental investigations presented below, the composite extrusion profiles consist of common aluminium wrought alloy (AlMgSi0.5) as matrix material and high strength steel alloy (X12CrNi17-7) with good mechanical properties at elevated temperatures as reinforcement material.
Especially due to specific properties like increased strength and restricted crack growth these materials are predestined for security relevant components that need an overload protection.
The high strength properties of the steel fibres lead to significant tool wear when drilling these fibres.
Machining thin-walled, reinforced, and non-reinforced extruded light metal profiles and their resulting framework structures is often regarded as critical because of manifold factors influencing the machining process.
For the experimental investigations presented below, the composite extrusion profiles consist of common aluminium wrought alloy (AlMgSi0.5) as matrix material and high strength steel alloy (X12CrNi17-7) with good mechanical properties at elevated temperatures as reinforcement material.
Especially due to specific properties like increased strength and restricted crack growth these materials are predestined for security relevant components that need an overload protection.
The high strength properties of the steel fibres lead to significant tool wear when drilling these fibres.
Online since: February 2007
Authors: Hong Jie Wang, Zhi Hao Jin, Peng Zhao Gao
Oxidation Properties of Three Dimensional (3-D) Carbon Fiber
Preform Coated by SiC-SiO2
Pengzhao Gao, Hongjie Wang and Zhihao Jin
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049,
P.R.
And also the oxidation properties of ceramic coating/ preform have not been studied carefully, which could help to develop more effective oxidation protection for preform.
The oxidation properties experiments.
Oxidation properties of coated perform in isothermal condition.
Oxidation properties of CP in non-isothermal condition.
And also the oxidation properties of ceramic coating/ preform have not been studied carefully, which could help to develop more effective oxidation protection for preform.
The oxidation properties experiments.
Oxidation properties of coated perform in isothermal condition.
Oxidation properties of CP in non-isothermal condition.
Online since: November 2012
Authors: De Wei Tang, X. Hou, S. Jiang, Z. Deng, Q. Quan, X. Shi
(2)
Therefore, the cutting thickness e is an important factor affecting the cutting load.
The sample is able to come into the core institutions as much as possible on the condition that the sample to maintain the original form (to maintain the solid features) does not decompose under the influence of centrifugal force (fluid properties enhanced).
Ignoring friction of the support tube and soil cylinder, the mechanical model of the sampling process is as shown below:
The experimental results can provide the key parameters in the control process of coring drill. 5 Conclusion The large-depth lunar soil drilling & coring involves many aspects strongly coupled, including the driving parameters of coring drill, mechanical properties of lunar soil and their interaction.
This finding will benefit the coring drill control in the lunar soil with similar properties.
The sample is able to come into the core institutions as much as possible on the condition that the sample to maintain the original form (to maintain the solid features) does not decompose under the influence of centrifugal force (fluid properties enhanced).
Ignoring friction of the support tube and soil cylinder, the mechanical model of the sampling process is as shown below:
The experimental results can provide the key parameters in the control process of coring drill. 5 Conclusion The large-depth lunar soil drilling & coring involves many aspects strongly coupled, including the driving parameters of coring drill, mechanical properties of lunar soil and their interaction.
This finding will benefit the coring drill control in the lunar soil with similar properties.