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Online since: July 2011
Authors: Yuan Liu, Wei Hua Dan, Wen Chang Zhou
Theirs mechanical, water-resistant and thermal-stability properties of these blending mixtures are characterized by FT-IR, DSC etc analyzing methods.
These results indicate that the properties are improved great.
Introduction Fibrous materials produced from collagen have poor properties such as mechanical capacity,thermal stability,water resistant and degradative time fixation etc.
Properties such as mechanical,water-resistant and heat stable etc were improved most.
The key factor affecting property of blending system is the mass ratio But the effect of blending temperature and time were little.
These results indicate that the properties are improved great.
Introduction Fibrous materials produced from collagen have poor properties such as mechanical capacity,thermal stability,water resistant and degradative time fixation etc.
Properties such as mechanical,water-resistant and heat stable etc were improved most.
The key factor affecting property of blending system is the mass ratio But the effect of blending temperature and time were little.
Online since: June 2021
Authors: Guo Qing Zhang, Wen Yong Xu, Zhou Li, Liang Zheng, Yu Feng Liu, Li Chong Zhang
The physical properties of powder mainly include tap density, bulk density and powder flowability.
The powder flowability is one of the most important physical properties which is important to the application.
There are many factors affecting the powder flowability, while the particle size and shape are two main factors.
Discussion The particle size and shape are two main factors affecting powder flowability [18-20].
Effect of particle properties on the flowability of ibuprofen powders[J].
The powder flowability is one of the most important physical properties which is important to the application.
There are many factors affecting the powder flowability, while the particle size and shape are two main factors.
Discussion The particle size and shape are two main factors affecting powder flowability [18-20].
Effect of particle properties on the flowability of ibuprofen powders[J].
Online since: October 2013
Authors: Jun Feng Guan, Xian Hua Yao, Peng Li
Abstract: Based on the generalization and analysis of laboratory experimental results on mix ratio, the effects of various factors such as cement content, water-cement ratio, curing time, curing conditions and types of cement on the mechanical properties of unconfined compressive strength of cement soil are presented.
The author carried laboratory experiments of mix ratio tests of cement soil for the influential factors.
The strength of the soil is determined by unconfined compressive strength, comparing of various factors on the strength of cement soil.
As shown in Fig. 4, our results present the same properties, and a linear change can be seen.
The largest strength of cement soil was reached by P.O52.5 cement, while the curing strengths of expansive cement were all small, and the other two kinds of mechanical properties of cement-soil were quite similar.
The author carried laboratory experiments of mix ratio tests of cement soil for the influential factors.
The strength of the soil is determined by unconfined compressive strength, comparing of various factors on the strength of cement soil.
As shown in Fig. 4, our results present the same properties, and a linear change can be seen.
The largest strength of cement soil was reached by P.O52.5 cement, while the curing strengths of expansive cement were all small, and the other two kinds of mechanical properties of cement-soil were quite similar.
Online since: January 2013
Authors: A. Kosyachkov, L. Wang, J. Anzellotti, R. Hallock, C. Hodgson
Microstructural, optical and mechanical properties of oxide and fluoride films are examined.
However the factors affecting structure and stoichiometry of the compounds and repeatability of filter deposition processes are complex and testing under actual condition of use is still a major feature of quality control for thin film materials [1].
It can cause absorption of water and hydrocarbons and instability of optical and mechanical properties.
Physical properties.
Optical, mechanical and environmental properties of coating materials determine quality and performance of interference filters.
However the factors affecting structure and stoichiometry of the compounds and repeatability of filter deposition processes are complex and testing under actual condition of use is still a major feature of quality control for thin film materials [1].
It can cause absorption of water and hydrocarbons and instability of optical and mechanical properties.
Physical properties.
Optical, mechanical and environmental properties of coating materials determine quality and performance of interference filters.
Online since: January 2007
Authors: José Manuel Torralba, Mónica Campos, Teodora Marcu, J. Sicre-Artalejo
In every case, the remaining Mn, as a solid
solution, strengthens the final material, improving its mechanical properties [2].
The mechanical properties were analysed by impact tests with an available energy of 300J and impact velocity was 5.47 m/s.
Sintered Properties.
The O2 and C content on the mechanical properties should not be overlooked.
The mechanical properties are affected by activated sintering process as well as by the addition of Mn as alloying element.
The mechanical properties were analysed by impact tests with an available energy of 300J and impact velocity was 5.47 m/s.
Sintered Properties.
The O2 and C content on the mechanical properties should not be overlooked.
The mechanical properties are affected by activated sintering process as well as by the addition of Mn as alloying element.
Online since: October 2011
Authors: S.M. Sapuan, A.B. Abdullah, Z. Samad, H.M.T. Khaleed, N.A. Aziz
bSchool of Mechanical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang, MALAYSIA.
Accuracy of the net-shape manufacturing such as forging becomes critical as the process depends on many factors.
Defect will harm the assembly tend to affect the performance of the part.
Cold forging, one of the net-shape manufacturing processes is governed by many factors such as friction, parts geometries, die shape and temperature setting of the die and workpiece.
Before After Fig. 1: The pin head before and after embossing FE Modeling Aluminum (AA6061-T4), with thickness 3 mm was used as an embossed material and its properties used in the FEM simulation were list in Table 1.
Accuracy of the net-shape manufacturing such as forging becomes critical as the process depends on many factors.
Defect will harm the assembly tend to affect the performance of the part.
Cold forging, one of the net-shape manufacturing processes is governed by many factors such as friction, parts geometries, die shape and temperature setting of the die and workpiece.
Before After Fig. 1: The pin head before and after embossing FE Modeling Aluminum (AA6061-T4), with thickness 3 mm was used as an embossed material and its properties used in the FEM simulation were list in Table 1.
Online since: December 2012
Authors: Song Yong Liu, Chen Xu Luo
Vibration law and affecting factors of walking unit was draw.
Because the shearer is influenced by vibration factors, the parts is often damaged, then the situation influence the production efficiency.
Therefore, based on present conditions, this paper take the vibration test on the test-bed of shearer walking mechanism which in No-load condition,and analysis the fluctuation rule of vibration factors preliminary. 2.
Mechanical Drive, 3 (2009)
Chinese Journal of Mechanical Engineering, 1,36(2000)
Because the shearer is influenced by vibration factors, the parts is often damaged, then the situation influence the production efficiency.
Therefore, based on present conditions, this paper take the vibration test on the test-bed of shearer walking mechanism which in No-load condition,and analysis the fluctuation rule of vibration factors preliminary. 2.
Mechanical Drive, 3 (2009)
Chinese Journal of Mechanical Engineering, 1,36(2000)
Online since: May 2007
Authors: Xiao Huai Xue, Song Nian Lou, Hua Du, Hai Liang Yu, Shu Fang Yang, Zheng Cai Deng
The characteristic properties of aluminum, high strength
stiffness to weight ratio, good formability, good corrosion resistance, and recycling potential make it
the ideal candidate to replace heavier materials in the car to respond to the weight reduction demand
within the automotive industry [1].
It is metallurgical, mechanical and technological factors that affect the cracking susceptibility of the aluminum during the welding.
The mechanical factor is the rigidity restrain of the joint.
Mechanical testing.
Table.8 Mechanical properties at room temperature of 6061 aluminum joint UTS/ MPa EI / % Method Joint type As welded Natural aging 30 days As welded Natural aging 30 days Fracture location Butted 204 213 7.2 9.8 Base metal TIG Lapped 96.3 104 � � Weld metal Butted 216 229 6.2 8.7 Base metal MIG Lapped 71.3 90.7 � � Weld metal Table.9 Bend testing results of the 6061 aluminum butted joint at temperature Bending angle 180° Method State Face bend Root bend As welded Accep.
It is metallurgical, mechanical and technological factors that affect the cracking susceptibility of the aluminum during the welding.
The mechanical factor is the rigidity restrain of the joint.
Mechanical testing.
Table.8 Mechanical properties at room temperature of 6061 aluminum joint UTS/ MPa EI / % Method Joint type As welded Natural aging 30 days As welded Natural aging 30 days Fracture location Butted 204 213 7.2 9.8 Base metal TIG Lapped 96.3 104 � � Weld metal Butted 216 229 6.2 8.7 Base metal MIG Lapped 71.3 90.7 � � Weld metal Table.9 Bend testing results of the 6061 aluminum butted joint at temperature Bending angle 180° Method State Face bend Root bend As welded Accep.
Online since: October 2010
Authors: Song Yang Zhang, Xiao Qin Guo, Gao Shan Ma
The heat affected zone of the joint was decreased and the grain size of the joint was become small.
Many factors affect the solidification cracking, but the nature of point of view, the factors can be summarized in two aspects, namely, metallurgical factors and power factors.
Welding belongs to local heating, therefore, in the heat-affected zone of the crystals occurred in recrystallization.
Semi-solid treatment, the 2A14 aluminum alloy welding grain refinement due to welding materials, welding seam can be better, improve welding quality to be fine grain, making the weld hardness, toughness and other properties are significantly improved.
Xiong La-sen, Welding Engineering Fundamentals[M], Mechanical Industry Press,2007,8 10.
Many factors affect the solidification cracking, but the nature of point of view, the factors can be summarized in two aspects, namely, metallurgical factors and power factors.
Welding belongs to local heating, therefore, in the heat-affected zone of the crystals occurred in recrystallization.
Semi-solid treatment, the 2A14 aluminum alloy welding grain refinement due to welding materials, welding seam can be better, improve welding quality to be fine grain, making the weld hardness, toughness and other properties are significantly improved.
Xiong La-sen, Welding Engineering Fundamentals[M], Mechanical Industry Press,2007,8 10.
Online since: September 2016
Authors: V.S. Tsepelev, G.V. Tiagunov, Andrey Tiagunov
Amorphous Copper-Based Alloys: Structure, Technology and Properties
A.G.
The present work describes the analysis of the physical properties of liquid amorphous solder, conducted heat treatment of the melt and the study of the samples mechanical properties in the solid state.
Therefore, in liquid alloys of the same composition, in the same conditions, the short-range order parameters, the nature of inter-particle interactions and the distribution of elements vary affecting the behavior of such processes as diffusion, a crystallization, etc. [12].
Each of the used alloying elements confers specific properties to the alloys.
The above-mentioned factors favorably affect the process of amorphization and the quality of the spare surface of the ribbon.
The present work describes the analysis of the physical properties of liquid amorphous solder, conducted heat treatment of the melt and the study of the samples mechanical properties in the solid state.
Therefore, in liquid alloys of the same composition, in the same conditions, the short-range order parameters, the nature of inter-particle interactions and the distribution of elements vary affecting the behavior of such processes as diffusion, a crystallization, etc. [12].
Each of the used alloying elements confers specific properties to the alloys.
The above-mentioned factors favorably affect the process of amorphization and the quality of the spare surface of the ribbon.