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Online since: October 2014
Authors: Wen Yong Liu, Guang Sheng Zeng, Jun Hong Yang, Yi Chen
The freezing temperature and freeze-thaw cycle times affected the mechanical properties of gels.
Results The effect of freezing temperature on the mechanical properties on gels The mechanical properties of PVA-OaPOSS hydrogels polymerized at different freezing temperature were shown in Fig. 2.
Fig. 4 shows the effect of freeze-thaw cycle times on the mechanical properties on gels.
Considering the economic factor, five times freeze-thaw cycle is property for the preparation of gels.
The freezing temperature and freeze-thaw cycle times affected the mechanical properties of gels.
Results The effect of freezing temperature on the mechanical properties on gels The mechanical properties of PVA-OaPOSS hydrogels polymerized at different freezing temperature were shown in Fig. 2.
Fig. 4 shows the effect of freeze-thaw cycle times on the mechanical properties on gels.
Considering the economic factor, five times freeze-thaw cycle is property for the preparation of gels.
The freezing temperature and freeze-thaw cycle times affected the mechanical properties of gels.
Online since: July 2006
Authors: Yi Wang Bao, Jow Lay Huang, V.T. Bublik, R.H. Sung
Evaluating Mechanical Properties Of Hard Coatings
By Using Relativity Method
Y.W.
Mechanical properties of coatings are usually affected by the substrate behavior and the thickness of the coating.
Therefore, the absolute value of the mechanical properties of the film is often difficult to obtain, but the properties of a coated sample and a monolithic sample could be measured, and there must be a unique relation between them.
Therefore, the evaluation of the mechanical properties of film/substrate system and hard coating is important for engineering application.
The mechanical properties of hard coating are determined by the relative ratio of properties of the coating/substrate system to the monolithic substrate.
Mechanical properties of coatings are usually affected by the substrate behavior and the thickness of the coating.
Therefore, the absolute value of the mechanical properties of the film is often difficult to obtain, but the properties of a coated sample and a monolithic sample could be measured, and there must be a unique relation between them.
Therefore, the evaluation of the mechanical properties of film/substrate system and hard coating is important for engineering application.
The mechanical properties of hard coating are determined by the relative ratio of properties of the coating/substrate system to the monolithic substrate.
Online since: March 2013
Authors: Xian Peng Cao, Chong Guang Zang
According to piezoelectricity and electrical conductivity theory, we added PZT and MWNTs to EP which had bad properties, made piezoelectic damping composites through solution blending.
This would affect the use of materials.
Excess MWNTs would agglomerate, thereby affected the formation of micro-conductive network.
Preparation and Properties of 0-3 PZT/PVDF Piezoelectric Composite with Solution-Mixing Method In Chinese.
[5] ASTM E756-1993, Standard test method for measuring vibration- damping properties of materials
This would affect the use of materials.
Excess MWNTs would agglomerate, thereby affected the formation of micro-conductive network.
Preparation and Properties of 0-3 PZT/PVDF Piezoelectric Composite with Solution-Mixing Method In Chinese.
[5] ASTM E756-1993, Standard test method for measuring vibration- damping properties of materials
Online since: October 2012
Authors: Hao Chen, Hai Jun Zhou, De Ju Liu, Yan Tao Li
The result shows that the PU of PNA and PHA revealed better damping properties.
3.3 Mechanical properties
Table 3 Mechanical properties of PUs with different polyester structure
polyester
Shore A
hardness
Tensile strength
/MPa
Tear strength
/kN·m-1
Elongation of break
/%
PBA
89
45.5
79.8
497
PEPA
84
44.8
78.9
584
PNA
71
24.8
32.3
595
PHA
82
8.8
35.2
577
The mechanical properties of the PUs are shown in Table 3.
It can be seen that the mechanical properties became lower with increase in polyester except the elongation of break.
For this reason, the mechanical properties of PU for PNA and PHA are lower than those of PU for PBA and PEPA.
These results suggest that phase separation exists on the surfaces of PHA. 4 Summary (1) The damping properties of PUs are affected by the methyl of polyester.
(2) The mechanical properties PUs would be decreased with increase in methyl of polyester except the elongation of break
It can be seen that the mechanical properties became lower with increase in polyester except the elongation of break.
For this reason, the mechanical properties of PU for PNA and PHA are lower than those of PU for PBA and PEPA.
These results suggest that phase separation exists on the surfaces of PHA. 4 Summary (1) The damping properties of PUs are affected by the methyl of polyester.
(2) The mechanical properties PUs would be decreased with increase in methyl of polyester except the elongation of break
Online since: October 2015
Authors: Lorand Kun, Cristian Sorin Nes, Karoly Menyhardt, Ramona Nagy, Karla Noemy Kun, Dana Silaghi-Perju, Andor Bogdan
Mapping the Mechanical Properties of Cancellous Bone from the Femoral Head
Karla-Noemy KUN* 1, a, Lorand KUN2, b, Ramona NAGY1, c,
Karoly MENYHARDT1, d, Dana SILAGHI-PERJU1, Cristian-Sorin NES1,
Andor BOGDAN3
1 Mechanical and Strength of Materials Department, Politehnica University Timisoara, 1.
This work presents an experimental program to determine the mechanical properties of cancellous bone in the femoral head as a function of location.
All specimens underwent compression testing in order to determine the mechanical properties of each specimen and thus a properties map of the cancellous bone in the femoral head was obtained.
Due to the variability of this process and other important factors like age, weight or hormonal balance, knowing the overall properties of the bone in the diseased femoral head is of high relevance to the medical and scientific world [7].
Ashby, The properties of foams and lattices, Fill.
This work presents an experimental program to determine the mechanical properties of cancellous bone in the femoral head as a function of location.
All specimens underwent compression testing in order to determine the mechanical properties of each specimen and thus a properties map of the cancellous bone in the femoral head was obtained.
Due to the variability of this process and other important factors like age, weight or hormonal balance, knowing the overall properties of the bone in the diseased femoral head is of high relevance to the medical and scientific world [7].
Ashby, The properties of foams and lattices, Fill.
Online since: October 2014
Authors: Xin Guan, Jun Wei Fu, Zhong Qi Dong, Min Chen, Yan Yan Zhang, Jian Lu Yuan
The mechanical properties of 60Si2Mn were investigated with the cooling rate changing under new finishing temperature.
Results showed: the mechanical properties of 60Si2Mn plate depend on the finishing temperature and the cooling rate changing.
It is investigated to the effect of the finish rolling temperature and cooling rate on the microstructure, mechanical properties of the impact by using the flexible rolling spring steel.
The samples cuted and planed were made of tensile specimen, and the mechanical properties experimented according to national standard GB/T228-87 using BDCL type materials mechanics multi-function testing machine at room temperature 10 ° C -35 ° C.
[3] Liang Liang, Guan Qing feng, Wang min, Hou Zhongyu, Shao Yang, Liu Yunxu.FoRmation Law of the (BF + AR) Micostructure in Steel 60Si2Mn and Its Mechanical Properties [J].
Results showed: the mechanical properties of 60Si2Mn plate depend on the finishing temperature and the cooling rate changing.
It is investigated to the effect of the finish rolling temperature and cooling rate on the microstructure, mechanical properties of the impact by using the flexible rolling spring steel.
The samples cuted and planed were made of tensile specimen, and the mechanical properties experimented according to national standard GB/T228-87 using BDCL type materials mechanics multi-function testing machine at room temperature 10 ° C -35 ° C.
[3] Liang Liang, Guan Qing feng, Wang min, Hou Zhongyu, Shao Yang, Liu Yunxu.FoRmation Law of the (BF + AR) Micostructure in Steel 60Si2Mn and Its Mechanical Properties [J].
Online since: March 2013
Authors: Jing Hai Yu, Tian Hui Fei, Yan Wang
The factors of vertical stress, masonry strength, and horizontal reinforcement strip were analyzed, and relevant conclusions were drawn.
The results indicate that the masonry strength is the main factors affecting shear performance of the wall and the horizontal reinforcement strip enhance the seismic behavior of the wall.
Few researches on failure mode in bearing structures are done—not to mention research on factors for seismic performance.
Therefore, on the premise of physical properties and mechanical properties of block, the block (A7.5) is suitable for multilayer composite structure buildings. 3.3 The influence of horizontal reinforcement strip In order to enhance the bearing capacity and deformation ability of the block and the seismic performance of the wall, some other masonry construction measures should be taken after using constructional column in the wall.
(2) The masonry strength is the main factors affecting shear performance of the wall.
The results indicate that the masonry strength is the main factors affecting shear performance of the wall and the horizontal reinforcement strip enhance the seismic behavior of the wall.
Few researches on failure mode in bearing structures are done—not to mention research on factors for seismic performance.
Therefore, on the premise of physical properties and mechanical properties of block, the block (A7.5) is suitable for multilayer composite structure buildings. 3.3 The influence of horizontal reinforcement strip In order to enhance the bearing capacity and deformation ability of the block and the seismic performance of the wall, some other masonry construction measures should be taken after using constructional column in the wall.
(2) The masonry strength is the main factors affecting shear performance of the wall.
Online since: June 2008
Authors: F.S. Silva, A.S. Miranda, M. Buciumeanu
Influence of Wear Properties on Fretting Fatigue Life of a CK45
Alloy and the Al7175 Alloy
M.
It is dependent on both the fatigue and the wear properties of the materials.
Several factors act at the same time and it is not an easy task to establish correlations between them.
The mechanical properties and the approximate grain size of the materials used are given in Table 1 Table 1 Mechanical properties and the approximate grain size of the materials.
The stress concentration factors were obtained by finite element simulation using CosmosWorks, adaption a 2D semi-elliptical surface scar.
It is dependent on both the fatigue and the wear properties of the materials.
Several factors act at the same time and it is not an easy task to establish correlations between them.
The mechanical properties and the approximate grain size of the materials used are given in Table 1 Table 1 Mechanical properties and the approximate grain size of the materials.
The stress concentration factors were obtained by finite element simulation using CosmosWorks, adaption a 2D semi-elliptical surface scar.
Online since: August 2014
Authors: Han Rui Pei
According to the theoretical calculating formula of ground bearing capacity in the soil mechanics theory, analyze the major influential factors of building ground bearing capacity in subsidence areas, and they are internal friction angle, cohesive, and foundation base buried depth, especially physical and mechanical properties of soil.
Analysis Factors of the Foundation Stability Many factors affect the stability of the foundation, the main one is the size and nature of the building loads, type and space rock, soil distribution, groundwater conditions, as well as geological disasters and so on.
Fig.1 shows the analysis factors of the foundation stability.
In particular, its mechanical properties such as tensile strength, compressive strength, modulus of elasticity are a major factor in the destruction of the rock to resist deformation.
Depth factors for undrained bearing capacity.
Analysis Factors of the Foundation Stability Many factors affect the stability of the foundation, the main one is the size and nature of the building loads, type and space rock, soil distribution, groundwater conditions, as well as geological disasters and so on.
Fig.1 shows the analysis factors of the foundation stability.
In particular, its mechanical properties such as tensile strength, compressive strength, modulus of elasticity are a major factor in the destruction of the rock to resist deformation.
Depth factors for undrained bearing capacity.
Online since: October 2014
Authors: Ji Chao Peng, Peng Lv, Song Lin Wang
A lot of factors would affect the ancient landslide stability and change its engineering geological conditions, such as the underground mining activity, the construction of industrial area and the increase of rainfall.
Internal factors The landslide is an ancient landslide which has a sliding surface.
Through sampling test and analysis, the mechanics properties of sliding surface is high natural moisture content, large natural void ratio, high compressibility, low shear strength characteristic.
This is the favorable factors for landslide decline.
As a result, it reduced the sliding surface resistance properties of rock and soil mass.
Internal factors The landslide is an ancient landslide which has a sliding surface.
Through sampling test and analysis, the mechanics properties of sliding surface is high natural moisture content, large natural void ratio, high compressibility, low shear strength characteristic.
This is the favorable factors for landslide decline.
As a result, it reduced the sliding surface resistance properties of rock and soil mass.