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Online since: December 2014
Authors: Sergey Veselov, Natalya Belousova, Olga Goryainova, Dmitriy Anufrienko
The estimation of the physical properties of raw compacts and sintered ceramic samples was done.
To evaluate the influence of parameters on the mechanical properties of molding material a three-point bending test was made using a universal electromechanical system «Instron 3369».
It was noticed that larger values of the density of raw compacts do not provide higher rates of mechanical properties of the samples after sintering.
On this basis, conclusion that the mechanical properties of ceramics are determined by the behavior and strength of adhesion between granules but not the compact density of raw compacts.
Rimmer, The cold isostatic pressing and sintering of alumina powders for use in the machine process: an investigation of some physical factors affecting service performance, UMIST, 1961
To evaluate the influence of parameters on the mechanical properties of molding material a three-point bending test was made using a universal electromechanical system «Instron 3369».
It was noticed that larger values of the density of raw compacts do not provide higher rates of mechanical properties of the samples after sintering.
On this basis, conclusion that the mechanical properties of ceramics are determined by the behavior and strength of adhesion between granules but not the compact density of raw compacts.
Rimmer, The cold isostatic pressing and sintering of alumina powders for use in the machine process: an investigation of some physical factors affecting service performance, UMIST, 1961
Online since: July 2014
Authors: Fu Ming Liu, Qun Ding
For civil engineering finite element model of complex structure, there are many factors which can affect the calculation accuracy.
Assembly inaccuracy in the process of building, welding process of steel structure, concrete pouring of structure and curing conditions, and many other factors, make the actual geometric, physical and mechanical properties of the structure deviate from the design value.
The main influence factors can be divided into three categories in general: space geometry topology configuration errors, mathematical discretization errors, physical mechanical properties errors.
Physical mechanical properties errors mainly come from the nonlinear response of material.
The other is that the parameters of finite element model are mainly determined by the factors such as geometry and material properties of the structure, and they have specific physical meaning.
Assembly inaccuracy in the process of building, welding process of steel structure, concrete pouring of structure and curing conditions, and many other factors, make the actual geometric, physical and mechanical properties of the structure deviate from the design value.
The main influence factors can be divided into three categories in general: space geometry topology configuration errors, mathematical discretization errors, physical mechanical properties errors.
Physical mechanical properties errors mainly come from the nonlinear response of material.
The other is that the parameters of finite element model are mainly determined by the factors such as geometry and material properties of the structure, and they have specific physical meaning.
Online since: November 2012
Authors: Jian Zhu, Ping Wang, Ke Lin Li, Ming Jing Lei, Yang Su, Wei Li Zhang
Changes of wear resistance, surface hardness and other mechanical properties were discussed.
Properties of C/C woodceraics Due to the particular structure and properties of wood, C/C woodceramics prepared from wood has many unique properties, such as sensing property, electromagnetic shielding properties, excellent friction property and mechanical property.
The electromagnetic shielding efficiency of C/C woodcermics is restricted by carbonization temperature, porosity, resistivity, pore size, distribution or other factors.
Mechanical properties.
Due to the mechanical properties of wood, C/C woodceramics has high hardness, certain bending compressive structure, good bending elastic modulus, good fracture toughness and other mechanical properties.
Properties of C/C woodceraics Due to the particular structure and properties of wood, C/C woodceramics prepared from wood has many unique properties, such as sensing property, electromagnetic shielding properties, excellent friction property and mechanical property.
The electromagnetic shielding efficiency of C/C woodcermics is restricted by carbonization temperature, porosity, resistivity, pore size, distribution or other factors.
Mechanical properties.
Due to the mechanical properties of wood, C/C woodceramics has high hardness, certain bending compressive structure, good bending elastic modulus, good fracture toughness and other mechanical properties.
Online since: March 2017
Authors: Lu Ming Shen, Thomas Neitzert, Maziar Ramezani, Emmanuel Flores-Johnson
The aim of this study is to investigate the effect of strain rate on the compressive mechanical properties of Ti6Al4V alloy manufactured by a selective laser melting process.
The objective of this paper is to investigate the dynamic mechanical properties of Ti–6Al–4V parts prepared by the SLM method.
By monitoring the strains in the bars, specimen stress-strain properties can be calculated [6].
Temperature and holding time in the α+β area are heat treatment factors that control the amount of the β-phase and α-phase recrystallization kinetics.
-P., Van Humbeeck, J. (2014) Microstructure and mechanical properties of a novel β titanium metallic composite by selective laser melting.
The objective of this paper is to investigate the dynamic mechanical properties of Ti–6Al–4V parts prepared by the SLM method.
By monitoring the strains in the bars, specimen stress-strain properties can be calculated [6].
Temperature and holding time in the α+β area are heat treatment factors that control the amount of the β-phase and α-phase recrystallization kinetics.
-P., Van Humbeeck, J. (2014) Microstructure and mechanical properties of a novel β titanium metallic composite by selective laser melting.
Online since: June 2014
Authors: Hong Mei Zhuang, Zhi Qiang Zhao, Lei Zhang, Xiao Liang Miao
It is a kind of non polar polymers, with mechanical properties and good elasticity.
Factors Affecting the Synthesis of High Styrene Rubber Temperature control: When the conversion rate was 98%, with the increase of the reaction temperature, reaction time is shortened obviously.
Styrene content: due to the quality of styrene and butadiene styrene rubber than the direct effects of high bound styrene content, thus affecting the physical and mechanical properties of products.
In addition, vulcanization system may have an effect on the blend properties.
A Mechanical Study on Tennis Racquets to Investigate Design Factors that Contribute to Reduced Stress and Improved Vibrational Dampening.
Factors Affecting the Synthesis of High Styrene Rubber Temperature control: When the conversion rate was 98%, with the increase of the reaction temperature, reaction time is shortened obviously.
Styrene content: due to the quality of styrene and butadiene styrene rubber than the direct effects of high bound styrene content, thus affecting the physical and mechanical properties of products.
In addition, vulcanization system may have an effect on the blend properties.
A Mechanical Study on Tennis Racquets to Investigate Design Factors that Contribute to Reduced Stress and Improved Vibrational Dampening.
Online since: July 2023
Authors: Mukhlis M. Ismail, Wafaa A. Hussain, Furqan Salim Hashim, Ahmed A. Amr, Abdulqadher M. Daham, Luay H. Alwan
The density decreased with the addition of BCP, while the porosity and mechanical properties increased with additives.
The mechanical properties are illustrated in Table 3.
The BCP nanoparticles have been used to induce mesenchymal stem cell osteogenic differentiation, increase the cell adhesion, attach growth factors, and improve mechanical characteristics [20].
Conclusions Addition of BCP to the scaffolds of PVA affects the properties of nano composites.
The porosity and the mechanical properties of fabricated foam samples are within the characteristics of natural human bone tissue.
The mechanical properties are illustrated in Table 3.
The BCP nanoparticles have been used to induce mesenchymal stem cell osteogenic differentiation, increase the cell adhesion, attach growth factors, and improve mechanical characteristics [20].
Conclusions Addition of BCP to the scaffolds of PVA affects the properties of nano composites.
The porosity and the mechanical properties of fabricated foam samples are within the characteristics of natural human bone tissue.
Online since: April 2004
Authors: Hidetoshi Somekawa, Kenji Higashi, Yukio Nishikawa, Akira Takara, Taisuke Sasaki
However, in order to be actually applied as a structural material, it is required to have sufficient
mechanical properties such as meeting both reliability and safety.
The mechanical properties at room temperature and grain sizes on each material were summarized in Table 2.
These factors are considered to influence the variation in plane-strain fracture toughness.
Mechanical properties on present used AZ31 wrought magnesium alloy sheets Grain size, µm �0.2, MPa �y, MPa �UTS, MPa Elongation, % K1C, MPam1/2 KQ, MPam1/2 sample A 18 185 210 274 19 16.7 18.4 sample B 28 148 183 239 13 18.4 19.5 sample C 15 146 170 264 17 16.5 16.7 �0.2 is 0.2 % proof stress, �y is the yield stress, �UTS is the ultimate tensile strength, K1C is the plane-strain fracture toughness and KQ is critical stress intensity factor. 3.
There were no big differences in their mechanical properties and grain sizes in present used materials.
The mechanical properties at room temperature and grain sizes on each material were summarized in Table 2.
These factors are considered to influence the variation in plane-strain fracture toughness.
Mechanical properties on present used AZ31 wrought magnesium alloy sheets Grain size, µm �0.2, MPa �y, MPa �UTS, MPa Elongation, % K1C, MPam1/2 KQ, MPam1/2 sample A 18 185 210 274 19 16.7 18.4 sample B 28 148 183 239 13 18.4 19.5 sample C 15 146 170 264 17 16.5 16.7 �0.2 is 0.2 % proof stress, �y is the yield stress, �UTS is the ultimate tensile strength, K1C is the plane-strain fracture toughness and KQ is critical stress intensity factor. 3.
There were no big differences in their mechanical properties and grain sizes in present used materials.
Online since: May 2011
Authors: Jian Ding, Wei Xiang, Qiong Ying Quan, Ke Cheng Li
The effects of a few factors such as concentration of tea sapogenin, NaOH and Na2S2O4 as well as time on the whiteness and weight loss of fabric obtained: NaOH 8g/L, tea sapogenin 6g/L, Na2S2O4 5g/L, Lamepon A 2g/L, JFC 1g/L, Na2SiO3 2g/L and batching time 18h.
Results and discussion Factors affecting degumming process Sericin is insoluble in cold water.
Therefore, the whiteness of samples is considered as the major factor to evaluate the property of fabric in the process of cold-pad-batch degumming.
Comparison between soap soda boiling degumming and cold-pad-batch degumming Table 1 shows the effect of degumming method on weight loss as well as on some physical-mechanical properties of treated silk fabrics.
Effect of degumming method on some physical-mechanical properties of treated silk fabrics Degumming method whiteness Capillary effect (cm) Breaking strength (warp) (N) CRA (warp) (°) Weight loss (%) None 44.3 0 901.3 84.9 / Soap-soda method 70.9 10.0 706.5 95.3 23.2 Cold-pad-batch method 69.3 9.5 650.0 103.7 22.8 Table 2.
Results and discussion Factors affecting degumming process Sericin is insoluble in cold water.
Therefore, the whiteness of samples is considered as the major factor to evaluate the property of fabric in the process of cold-pad-batch degumming.
Comparison between soap soda boiling degumming and cold-pad-batch degumming Table 1 shows the effect of degumming method on weight loss as well as on some physical-mechanical properties of treated silk fabrics.
Effect of degumming method on some physical-mechanical properties of treated silk fabrics Degumming method whiteness Capillary effect (cm) Breaking strength (warp) (N) CRA (warp) (°) Weight loss (%) None 44.3 0 901.3 84.9 / Soap-soda method 70.9 10.0 706.5 95.3 23.2 Cold-pad-batch method 69.3 9.5 650.0 103.7 22.8 Table 2.
Online since: April 2019
Authors: Janis Kajaks, Oskars Platnieks, Anda Barkāne, Sergejs Gaidukovs
These materials should be characterized by enhanced dielectric properties compared to general polymer materials [2].
Recently, promising research has shown that nanoparticles of multiwall carbon nanotubes (CNT), graphene (Gr) and iron(III,IV) oxide (Fe3O4) are promising fillers for polymers, added in order to enhance conductivity, magnetic properties, optical properties, fatigue resistance, thermal stability, and mechanical properties of these materials [1,5,7].
Finally, dielectric properties of composites were analysed and compared to those of EVA.
Their properties were: σ =106–107 S/m, d = 20–30 nm and ρ = 4.8–5.1 g/cm3.
If frequency is increased, the effect of nanoparticles on dielectric properties decreases.
Recently, promising research has shown that nanoparticles of multiwall carbon nanotubes (CNT), graphene (Gr) and iron(III,IV) oxide (Fe3O4) are promising fillers for polymers, added in order to enhance conductivity, magnetic properties, optical properties, fatigue resistance, thermal stability, and mechanical properties of these materials [1,5,7].
Finally, dielectric properties of composites were analysed and compared to those of EVA.
Their properties were: σ =106–107 S/m, d = 20–30 nm and ρ = 4.8–5.1 g/cm3.
If frequency is increased, the effect of nanoparticles on dielectric properties decreases.
Online since: February 2014
Authors: Su Juan Pang, Qiang Lin, Nai Xu, Li Sha Pan, Nan Song Ma, Guang Mao Li
It is well-known that the rheological properties of gum solution can significantly affect the processibility of vacant capsules.
Hence, the rheological properties of sodium alginate/agar/MMT solution had been measured and discussed in this paper.
And then, a stable suspension was obtained by mechanical agitation in the thermostated bath.
Conclusion In this paper, the rheological properties of SA/AR/MMT solutions were investigated using a rotational viscometer.
Rheological Properties and Sugar Composition of Locust Bean Gum from Different Carob Varieties (Ceratonia siliqua L.), J.
Hence, the rheological properties of sodium alginate/agar/MMT solution had been measured and discussed in this paper.
And then, a stable suspension was obtained by mechanical agitation in the thermostated bath.
Conclusion In this paper, the rheological properties of SA/AR/MMT solutions were investigated using a rotational viscometer.
Rheological Properties and Sugar Composition of Locust Bean Gum from Different Carob Varieties (Ceratonia siliqua L.), J.