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Online since: June 2017
Authors: De Fu Li, Hai Bao Wu, Xing Gang Li, Guo Qiang Chai
In addition, the mechanical properties of the composites after plastic deformation will change significantly.
However, the power spinning is a complicated process under the coupling of multiple factors, and the continuous local loading makes the material non-uniformly deformed.
More and more studies have been done to establish the whole process simulation considering process parameters, microstructure, and macroscopic response [43] to understand how the various process parameters affect macro-mechanical properties by affecting the microstructure at a deeper level.
However, the mechanical properties of the PRAMCs are greatly affected by the preparation process, environment and raw material properties, and it is difficult to establish a strict mechanical model.
Yuan, Microstructure and Mechanical Properties of 7090 / SiCp Rolled Sheet (in chinses).
However, the power spinning is a complicated process under the coupling of multiple factors, and the continuous local loading makes the material non-uniformly deformed.
More and more studies have been done to establish the whole process simulation considering process parameters, microstructure, and macroscopic response [43] to understand how the various process parameters affect macro-mechanical properties by affecting the microstructure at a deeper level.
However, the mechanical properties of the PRAMCs are greatly affected by the preparation process, environment and raw material properties, and it is difficult to establish a strict mechanical model.
Yuan, Microstructure and Mechanical Properties of 7090 / SiCp Rolled Sheet (in chinses).
Online since: February 2013
Authors: Qi Ming Yu, Qi Yong You
The CTOD value of base metal, heat affect zone and welded seam were obtained.
Mechanical properties were shown in Table 1.
The weld and HAZ (heat affect zone) were based on BS7448: Part 2:1991 [2].
(3) where, is the Poisson's ratio, is the yield strength, is the width of the specimen, is the original crack length, is the elastic modulus, is the curve values point corresponds to the plastic part of the clip-on extensometer displacement, is twiddle factor, value of 0.45, is the intensity factor, Z is a knife-edge thickness
At 20℃, CTOD values from high to the end are welded seam, heat affect zone, base material.
Mechanical properties were shown in Table 1.
The weld and HAZ (heat affect zone) were based on BS7448: Part 2:1991 [2].
(3) where, is the Poisson's ratio, is the yield strength, is the width of the specimen, is the original crack length, is the elastic modulus, is the curve values point corresponds to the plastic part of the clip-on extensometer displacement, is twiddle factor, value of 0.45, is the intensity factor, Z is a knife-edge thickness
At 20℃, CTOD values from high to the end are welded seam, heat affect zone, base material.
Online since: February 2024
Authors: Jeremiah C. Millare, Jianne Christian T. Enriquez, Louelle Kate M. Domingo, Vivian U. Lagura
It is also important for the membrane to have excellent mechanical properties since most of the separation processes involve pressure – driven operations.
This polymer is one of the most widely used materials for membrane fabrication due to its mechanical strength and excellent film-formation properties [6].
The fabricated membranes were air dried overnight and were subjected to different characterizations to determine their physical, mechanical, and surface properties.
These morphological observations validate the well dispersion of the nanozeolite in 1% wt. sample and the possible agglomeration in 5% wt. sample, thus affecting mechanical property and contact angle measurements (as discussed in the previous sections).
These factors prevented water from passing through the membrane, thus, resulting in the gradual increase in contact angle measurements.
This polymer is one of the most widely used materials for membrane fabrication due to its mechanical strength and excellent film-formation properties [6].
The fabricated membranes were air dried overnight and were subjected to different characterizations to determine their physical, mechanical, and surface properties.
These morphological observations validate the well dispersion of the nanozeolite in 1% wt. sample and the possible agglomeration in 5% wt. sample, thus affecting mechanical property and contact angle measurements (as discussed in the previous sections).
These factors prevented water from passing through the membrane, thus, resulting in the gradual increase in contact angle measurements.
Effect of Strength Matching of Welded Joint on Stress Corrosion Cracking in Nuclear Power Structures
Online since: October 2013
Authors: He Xue, Min Qiao, Zhen Wen Wang, Ling Yan Zhao, Wei Bing Wang
Although the physical meaning and location of r0 still needs further discussion, the strain rate at a characteristic distance r0 in front of the crack tip could still be used for quantitative estimating the effect of mechanical factors on SCC growth rate.
Material mechanical property in welded joint.
The material mechanical property is continuous changed.
The continuous change of mechanical property is acquired by a pre-defined field approach in this paper [8], which could effectively reduce the effect of the material mechanical property errors on analyzed results.
In other hand, the numerical error would increase as r0 decrease because the mechanical singular exist at the crack tip, considering the above factors; 0.1 mm is adopted as a characteristic distance r0 in front of the crack tip in this paper.
Material mechanical property in welded joint.
The material mechanical property is continuous changed.
The continuous change of mechanical property is acquired by a pre-defined field approach in this paper [8], which could effectively reduce the effect of the material mechanical property errors on analyzed results.
In other hand, the numerical error would increase as r0 decrease because the mechanical singular exist at the crack tip, considering the above factors; 0.1 mm is adopted as a characteristic distance r0 in front of the crack tip in this paper.
Online since: March 2007
Authors: Andreas Hoffmann, U. Martin, H. Oettel, T. Mrotzek
Mechanical properties were characterized by tensile tests at room
temperature and up to 1200°C.
To estimate the influence of texture on strength of TZM the Taylor factors are calculated from EBSD data.
The average Taylor factors of all samples (IS to Rod6) are listed in Table 2.
This indicates the stress affecting impact of LAGBs introduced by hot deformation.
Agronov: In: Proceedings of the first Seiken International Symposium on Interface Structure, Properties and Diffusion Bonding 1985, Ishida Y, Eds., Tokyo [3] A.
To estimate the influence of texture on strength of TZM the Taylor factors are calculated from EBSD data.
The average Taylor factors of all samples (IS to Rod6) are listed in Table 2.
This indicates the stress affecting impact of LAGBs introduced by hot deformation.
Agronov: In: Proceedings of the first Seiken International Symposium on Interface Structure, Properties and Diffusion Bonding 1985, Ishida Y, Eds., Tokyo [3] A.
Online since: July 2011
Authors: Wen Lan Zhao, Li Xin Liu, Tong Hao
There are many researches that show that concrete made of the recycled coarse aggregate can have mechanical properties similar to those of conventional concretes and even high-strength concrete is nowadays a possible goal for this environmentally sound practice [1,2].
Fig.1 The recycled concrete fine aggregate Fig.2 The recycled brick fine aggregate The Fundamental Properties of Fine Aggregates Used in the Study.
The main factors affecting the shrinkage deformation was drying shrinkage after the age of 28 days(e.g.
“Influence of recycled aggregates on mechanical properties of HS/HPC”, Cement and Concrete Composities, 24, p.269–279
“Properties of concrete incorporating fine recycled aggregate”, Cement and Concrete Research, 35(4), p.763–769
Fig.1 The recycled concrete fine aggregate Fig.2 The recycled brick fine aggregate The Fundamental Properties of Fine Aggregates Used in the Study.
The main factors affecting the shrinkage deformation was drying shrinkage after the age of 28 days(e.g.
“Influence of recycled aggregates on mechanical properties of HS/HPC”, Cement and Concrete Composities, 24, p.269–279
“Properties of concrete incorporating fine recycled aggregate”, Cement and Concrete Research, 35(4), p.763–769
Online since: January 2005
Authors: Kwang Seon Shin, Hwa Chul Jung
The reduced porosity level in the SSP
components, which allows subsequent heat treatments for improved mechanical properties, is another
attractive advantage.
These rheological properties of the slurry make the SSP as a unique and effective process for the near net-shape cast products with enhanced mechanical properties.
Since the mechanical properties of the final cast products are significantly affected by the castability of the reheated billets, the SSP of Mg alloys requires reliable production of high quality Mg billets for SSP.
One of the most important factors in casting Mg billets is the safety of the process.
Therefore, the size and the volume fraction of the primary particles would affect the mechanical properties of the SSP Mg alloys.
These rheological properties of the slurry make the SSP as a unique and effective process for the near net-shape cast products with enhanced mechanical properties.
Since the mechanical properties of the final cast products are significantly affected by the castability of the reheated billets, the SSP of Mg alloys requires reliable production of high quality Mg billets for SSP.
One of the most important factors in casting Mg billets is the safety of the process.
Therefore, the size and the volume fraction of the primary particles would affect the mechanical properties of the SSP Mg alloys.
Online since: March 2011
Authors: Giuseppe Casalino
Experimental factors and levels.
The levels for the 3 factors considered are presented in table 2.
Factors and levels for the 23 factorial design.
The interaction between two factors is a variation in the difference of response between the levels of one factor at same levels of the other factors.
The rivet length revealed as the most affecting factor for the first three steps.
The levels for the 3 factors considered are presented in table 2.
Factors and levels for the 23 factorial design.
The interaction between two factors is a variation in the difference of response between the levels of one factor at same levels of the other factors.
The rivet length revealed as the most affecting factor for the first three steps.
Online since: June 2011
Authors: Xiao Fei Wang, Yu Fei Zhang, Kan Yu, Xiao Mei Yu
The factors affecting the ratio of vertical and lateral oxidation, for example, the gentle slope caused by isotropic oxidation and the inhomogeneity of the sidewall of silicon nano-wire, are discussed at last.
The process errors during the ASE and lithography lead to the trapezoid cross-section of the structure, which possibly affects the measurement of the width of micro-wire in SEM photos.
Besides, the gentle slope caused by thermal oxidation will affect the measurement of structure.
Kanayama: Si Pillar Photonic Crystal Slab with Linear Defects, Transmittance and Waveguide Properties.
[7] Zhenting Dai, Keunhan Park, William P.King:100 Nanometer Scale Resistive Heater-Thermometer on a Silicon Cantilever, Micro Electro Mechanical Systems(2009),p.543-546
The process errors during the ASE and lithography lead to the trapezoid cross-section of the structure, which possibly affects the measurement of the width of micro-wire in SEM photos.
Besides, the gentle slope caused by thermal oxidation will affect the measurement of structure.
Kanayama: Si Pillar Photonic Crystal Slab with Linear Defects, Transmittance and Waveguide Properties.
[7] Zhenting Dai, Keunhan Park, William P.King:100 Nanometer Scale Resistive Heater-Thermometer on a Silicon Cantilever, Micro Electro Mechanical Systems(2009),p.543-546
Online since: September 2013
Authors: Vahid Rezazadeh, Salar Salahi, Ali Hosseinzadeh, Amir Safari, Ali Sharbatzadeh
In order to enhance the mechanical properties of copper joints, FSP has been regarded as an effective method.
Dislocation density is a key factor for determining the mechanical properties of materials[11].
At tool speed of 300 rpm, cracks and cavities are the key factors determining the ductility of samples.
In tool speed of 600 rpm mechanical properties is improved by higher plastic deformation during process and adequate heat input .Increasing traverse speed from 40 to 100 mm/min mechanical properties improved.
The origin of non-uniform microstructure and its effects on the mechanical properties of a friction stir processed Al–Mg alloy.
Dislocation density is a key factor for determining the mechanical properties of materials[11].
At tool speed of 300 rpm, cracks and cavities are the key factors determining the ductility of samples.
In tool speed of 600 rpm mechanical properties is improved by higher plastic deformation during process and adequate heat input .Increasing traverse speed from 40 to 100 mm/min mechanical properties improved.
The origin of non-uniform microstructure and its effects on the mechanical properties of a friction stir processed Al–Mg alloy.