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Online since: November 2010
Authors: Jing Lin Tong, Hong Chao Fan, Xin Hua Yi, Jin Bao He, Jian Xi Yang
That have be the key factors to promote the application of oil film bearing about how to improve the load bearing capacity, to run at its best, and to extend the service life.
We analysis the load bearing capacity factors and optimized the parameters to improve the load bearing capacity and running at better performance.
The load capacity was decided by the number of parameters and factors.
It has high mechanical properties, processing performance, and wear resistance, corrosion.
Structural characteristics are the geometry of the bearing oil film thickness and other running properties of features.
We analysis the load bearing capacity factors and optimized the parameters to improve the load bearing capacity and running at better performance.
The load capacity was decided by the number of parameters and factors.
It has high mechanical properties, processing performance, and wear resistance, corrosion.
Structural characteristics are the geometry of the bearing oil film thickness and other running properties of features.
Online since: October 2006
Authors: Abílio P. Silva, Tessaleno C. Devezas, Ana M. Segadães
Table 1 Properties of the three ingredient classes of the matrix.
The software Statistica was used first to calculate valid models (response surfaces) that describe the matrix properties.
Two regions of high flowability (FI>150%) can clearly be seen, evidencing the effect of two major factors that promote it: the lubricating effect of a high amount of water (dominant in the AR-poor region) and the optimisation of the PSD (dominant in the AR-rich region).
Conclusions In the design of a particle composition for a SFRC, it is fundamental to minimise the matrix volume in the mixture because it adversely affects the sintered castable properties, such as mechanical strength (MoR) and dimensional stability (LS).
By doing this, the MPT value is highest and the sintered castable properties are the least affected.
The software Statistica was used first to calculate valid models (response surfaces) that describe the matrix properties.
Two regions of high flowability (FI>150%) can clearly be seen, evidencing the effect of two major factors that promote it: the lubricating effect of a high amount of water (dominant in the AR-poor region) and the optimisation of the PSD (dominant in the AR-rich region).
Conclusions In the design of a particle composition for a SFRC, it is fundamental to minimise the matrix volume in the mixture because it adversely affects the sintered castable properties, such as mechanical strength (MoR) and dimensional stability (LS).
By doing this, the MPT value is highest and the sintered castable properties are the least affected.
Online since: December 2012
Authors: Bi Wu Huang, Wei Qing Chen, Kuan Zhou, Chong Deng
Some properties of the photosensitive resin were investigated.
SLA part accuracy is a direct result of the resin properties, and a low volumetric shrinkage resin that is cured possesses a high accuracy for its fabricated part.
It has now been found that the photosensitive resins of epoxy-acrylate hybrid systems can be used for SL process, and the photosensitive resins are distinguished by a very low viscosity, a very low shrinkage, a very low curl factor and good mechanical properties in the green state and after full curing.
While glass transition happens to polymers, their physical properties will make abrupt changes, especially mechanical property, their tensile modulus will change the first or second power of ten so as to make polymers turn from stiff solid to soft elasticity, which totally changes the applied properties of polymers.
The experimental results showed that the photosensitive resin possesses good properties.
SLA part accuracy is a direct result of the resin properties, and a low volumetric shrinkage resin that is cured possesses a high accuracy for its fabricated part.
It has now been found that the photosensitive resins of epoxy-acrylate hybrid systems can be used for SL process, and the photosensitive resins are distinguished by a very low viscosity, a very low shrinkage, a very low curl factor and good mechanical properties in the green state and after full curing.
While glass transition happens to polymers, their physical properties will make abrupt changes, especially mechanical property, their tensile modulus will change the first or second power of ten so as to make polymers turn from stiff solid to soft elasticity, which totally changes the applied properties of polymers.
The experimental results showed that the photosensitive resin possesses good properties.
Online since: February 2021
Authors: Dmitry M. Rozhkov, Evgenia V. Eltoshkina, Petr I. Ilyin, Olga A. Svirbutovich
The only possible way to restore the seats of cylinder blocks that have internal surface wear should be considered galvanic, since other methods do not provide the required coating properties [1, 2, 3, 4].
At the same time, attention is paid to the non-developed method for obtaining electroplating due to the fact that this method has a number of advantages and advantages [6, 7, 9]; the possibility of obtaining local coatings with specified properties and high performance.
Further increase in speed does not affect the increase in .
Figure 3 clearly shows changes in electrochemical parameters depending on technological factors.
The formation of dendrites was observed at = 1.20 A∙cm-2.Consequently, the area of investigation of the influence of the cathode current density on the mechanical properties of the coating was determined from =0.10 A∙cm-2 to =2.00 A∙cm-2.As the current density increases, the hydrogen overvoltage increases faster and the current output increases.
At the same time, attention is paid to the non-developed method for obtaining electroplating due to the fact that this method has a number of advantages and advantages [6, 7, 9]; the possibility of obtaining local coatings with specified properties and high performance.
Further increase in speed does not affect the increase in .
Figure 3 clearly shows changes in electrochemical parameters depending on technological factors.
The formation of dendrites was observed at = 1.20 A∙cm-2.Consequently, the area of investigation of the influence of the cathode current density on the mechanical properties of the coating was determined from =0.10 A∙cm-2 to =2.00 A∙cm-2.As the current density increases, the hydrogen overvoltage increases faster and the current output increases.
Online since: March 2013
Authors: Mariusz Deja
Two methods for the abrasive properties evaluation, based on the image processing, are presented in the paper.
Image processing analysis was developed to evaluate quickly the abrasive properties as the tool wears down.
Two methods for the abrasive properties evaluation, based on the image processing, are proposed in the paper.
Image processing analysis was developed to evaluate quickly the abrasive properties as the tool wears down.
Fiecoat: Factors Affecting Grinding Performance with Electroplated CBN Wheels.
Image processing analysis was developed to evaluate quickly the abrasive properties as the tool wears down.
Two methods for the abrasive properties evaluation, based on the image processing, are proposed in the paper.
Image processing analysis was developed to evaluate quickly the abrasive properties as the tool wears down.
Fiecoat: Factors Affecting Grinding Performance with Electroplated CBN Wheels.
Online since: March 2023
Authors: Mark Kovalev, Artem D. Davydov, Daniil Lyashenko
Various studies have linked the occurrence of pitting corrosion to microbial activity, material defects, carbonaceous production residues on the copper surface, and other factors.
The study [15] compared the corrosion properties with galvanic steam of copper and zinc, as well as copper and zinc-based alloys (brass, with a zinc content of 15-30 percent or more).
One of the reasons for the intensification of corrosion processes can be protective coatings that have lost their properties in different parts of the product.
Investigation of factors affecting the corrosion of electrical equipment operated in an aggressive environment // Modern problem of science and education. - 2014. - No. 2
Effect of Inclusions on the Corrosion Properties of the Nickel-Based Alloys 718 and EP718.
The study [15] compared the corrosion properties with galvanic steam of copper and zinc, as well as copper and zinc-based alloys (brass, with a zinc content of 15-30 percent or more).
One of the reasons for the intensification of corrosion processes can be protective coatings that have lost their properties in different parts of the product.
Investigation of factors affecting the corrosion of electrical equipment operated in an aggressive environment // Modern problem of science and education. - 2014. - No. 2
Effect of Inclusions on the Corrosion Properties of the Nickel-Based Alloys 718 and EP718.
Online since: September 2013
Authors: Nai Chang Dai, Sheng Dong Yu
As indicated in electroforming test of metallic nickel, in comparison with traditional electroforming technology, particle flow erosion precision electroforming technology can effectively change the microscopic structure of electroforming deposit, refine grain and realize evener distribution of grains, so as to reduce the diffracted intensity of all crystal faces and enhance mechanical property of electroforming deposit.
With adoption of electroforming technology, it is possible to duplicate products of abnormal structure and components difficult to process or fabricate by mechanical method.
In accordance with Hall-Petch principle of common poly-crystal metal material sub-grain strengthening theory, performance of material is closely related to grain size and densification degree, its comprehensive mechanical property and grain size normally comply with the Hall-Petch relationship: ——proof stress of material ——lattice friction in case of single dislocation caused by movement —— constant d ——crystal grain size Microhardness HV Figure 7 A micro-hardness comparison diagram of two groups of test The comprehensive mechanical property of material is inversely proportional to the extraction of grain size d.
Particle flow erosion precision electroforming technology has expanded the application field of precision electroforming, and plays an important role for enhancement of comprehensive mechanical property of electroforming deposit.
Study on New Electroforming Technology of Abrasive Hard Particles, China Mechanical Engineering. 2006, 17 (1): 60-63
With adoption of electroforming technology, it is possible to duplicate products of abnormal structure and components difficult to process or fabricate by mechanical method.
In accordance with Hall-Petch principle of common poly-crystal metal material sub-grain strengthening theory, performance of material is closely related to grain size and densification degree, its comprehensive mechanical property and grain size normally comply with the Hall-Petch relationship: ——proof stress of material ——lattice friction in case of single dislocation caused by movement —— constant d ——crystal grain size Microhardness HV Figure 7 A micro-hardness comparison diagram of two groups of test The comprehensive mechanical property of material is inversely proportional to the extraction of grain size d.
Particle flow erosion precision electroforming technology has expanded the application field of precision electroforming, and plays an important role for enhancement of comprehensive mechanical property of electroforming deposit.
Study on New Electroforming Technology of Abrasive Hard Particles, China Mechanical Engineering. 2006, 17 (1): 60-63
Online since: April 2009
Authors: Roland Haubner, Amir Habib, Nils Stelzer
Nanofillers are small electrical and
mechanical defects, at the same time may lose their dielectric properties due to size effect.
The thin layers were characterized for their electrical properties using HIOKI 3532-50 LCR meter.
Dried thick films of thickness ~ 16.3 µm (wet thickness ~ 200 µm) were tested for their electrical properties.
Electrical properties of thin films at higher filler loadings.
Electrical properties of thick films at lower filler loadings.
The thin layers were characterized for their electrical properties using HIOKI 3532-50 LCR meter.
Dried thick films of thickness ~ 16.3 µm (wet thickness ~ 200 µm) were tested for their electrical properties.
Electrical properties of thin films at higher filler loadings.
Electrical properties of thick films at lower filler loadings.
Online since: September 2011
Authors: Yun Zang, Hai Zhang
In this century 40s and early 50s , fracture mechanics have been widely used in metal materials, then open up to nonmetal material field such as rock, concrete, gypsum etc.Since the 70's, the fatigue fracture mechanics had the very big development, gradually become emollient tool for analysising and predicting the fatigue life of structure.This paper deduce fatigue life forecast equation of cold-recycled material with method of fracture mechanics and estimate fatigue life of cold-recycled material through analysisng the factors affecting the fatigue life of cold-recycled material and choosing the suitable parameters.
Figure 2 Fatigue crack growth rate division Forman formula is considered theⅡarea, Ⅲ area and the average stress on the fatigue crack effect, The average stress on to the influence of the fatigue crack, choose as the main parameters of the stress ratio R, Forman formula [7] below: (1) ——Material test parameters ——Stress intensity factor picture () ——Stress than () ——Fracture toughness of material In all the influence factors of crack propagation, Elastic modulus, propagation threshold and the fracture toughness three factors change to crack growth behavior change is the most direct reason, and other factors on the influence of the crack propagation is indirect.
C and m of Fatigue life prediction formula are material test parameters, and many other factors affect fatigue life of the test, such as temperature, humidity, loading frequency, and all of the implicit.
Inwestigation of fatigue ftacture properties of concrete.
Journal of Hydraulic Engineering of Shanxi Mechanical Engineering Institute,Vol.6(1981)
Figure 2 Fatigue crack growth rate division Forman formula is considered theⅡarea, Ⅲ area and the average stress on the fatigue crack effect, The average stress on to the influence of the fatigue crack, choose as the main parameters of the stress ratio R, Forman formula [7] below: (1) ——Material test parameters ——Stress intensity factor picture () ——Stress than () ——Fracture toughness of material In all the influence factors of crack propagation, Elastic modulus, propagation threshold and the fracture toughness three factors change to crack growth behavior change is the most direct reason, and other factors on the influence of the crack propagation is indirect.
C and m of Fatigue life prediction formula are material test parameters, and many other factors affect fatigue life of the test, such as temperature, humidity, loading frequency, and all of the implicit.
Inwestigation of fatigue ftacture properties of concrete.
Journal of Hydraulic Engineering of Shanxi Mechanical Engineering Institute,Vol.6(1981)
Online since: November 2011
Authors: Lu Nie, Lu Lu Zhang, Xuan Wang
From 1950 to 2010, there are 187 floods, 720.4565 million people was affected.
Facing the disaster, countryside always result in more loss in life and property as less complete of transportation, sanitation and safety facilities as well as limitation of education level and the sense of self-protection.
Analysis on the Affected People of the Kit.
In the physiological aspect, the factors needed to consider mainly include user groups’ age, sex, weight, fitness and physical barriers etc. which are not only related to each other, but also have relationship with psychological factors and personal background and even suggest more detailed specific differences.
Its outer diameter should be determined by buoyancy which was computed based on following factors: when a person in the water, about two-thirds of the body are submerged, so a half of the kit, as well as internal protective goods is considered to be submerged when using to ensure it is absolute safety.
Facing the disaster, countryside always result in more loss in life and property as less complete of transportation, sanitation and safety facilities as well as limitation of education level and the sense of self-protection.
Analysis on the Affected People of the Kit.
In the physiological aspect, the factors needed to consider mainly include user groups’ age, sex, weight, fitness and physical barriers etc. which are not only related to each other, but also have relationship with psychological factors and personal background and even suggest more detailed specific differences.
Its outer diameter should be determined by buoyancy which was computed based on following factors: when a person in the water, about two-thirds of the body are submerged, so a half of the kit, as well as internal protective goods is considered to be submerged when using to ensure it is absolute safety.