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Online since: May 2013
Authors: Xue Cheng Zhang, Li Juan Yu, Chang Ju Xu
This affected the parts and the whole system working.
The critical load factor of the Structure, can be solved from eigenvalue problem which is produced by Lagrangeformat.
The buckling factor The critical load: .
Figure 4 .Rod cross-section changes Engineering calculation The use of experience, simple calculation equation for the calculation of effective mechanical properties of engineering practice is the most widely used method.
Mechanical Design Handbook(new).
The critical load factor of the Structure, can be solved from eigenvalue problem which is produced by Lagrangeformat.
The buckling factor The critical load: .
Figure 4 .Rod cross-section changes Engineering calculation The use of experience, simple calculation equation for the calculation of effective mechanical properties of engineering practice is the most widely used method.
Mechanical Design Handbook(new).
Online since: September 2014
Authors: Bi Feng Chen, Hong Yu Ouyang
Space more functional principle: because of lots of different edge space, thus also have different functional properties.
Perception and areas around the conditions of the relevant factors, including environment of road traffic in and around the streets around the building functional properties, mainly affecting the street landscape design of edge space layout.
Such factors for environment) are the prerequisites.
Details: detail factors include garden road, boundary, markers, ground shop, and ancillary facilities.
Trees planar configuration in consideration composition form at the same time, to consider the specific climate factors.
Perception and areas around the conditions of the relevant factors, including environment of road traffic in and around the streets around the building functional properties, mainly affecting the street landscape design of edge space layout.
Such factors for environment) are the prerequisites.
Details: detail factors include garden road, boundary, markers, ground shop, and ancillary facilities.
Trees planar configuration in consideration composition form at the same time, to consider the specific climate factors.
Online since: September 2014
Authors: Shu Min Wan, Guang You Li, Shuai Chen, Wang Zhao
The main factor that affects grinding quality is the damage produced in process.
Under proper enlargement factor, surface image from workpiece placed on workbench can be obtained through the optical lens.
Enlargement factor was 500, and sampling area was selected in the center of the workpiece surface.
It could be concluded through qualitative and quantitative analysis that the number and length of cracks on ferrite workpiece surface could directly affect the surface quality, and then affect the workpiece performance.
Processing Damages in Mn-Zn Ferrite Surface and Their Effect on the Magnetic Properties.
Under proper enlargement factor, surface image from workpiece placed on workbench can be obtained through the optical lens.
Enlargement factor was 500, and sampling area was selected in the center of the workpiece surface.
It could be concluded through qualitative and quantitative analysis that the number and length of cracks on ferrite workpiece surface could directly affect the surface quality, and then affect the workpiece performance.
Processing Damages in Mn-Zn Ferrite Surface and Their Effect on the Magnetic Properties.
Online since: May 2009
Authors: Lei Cui, Jiang Chang, L. Zhao, C. He, Da Ming Zhang
Both scaffolds were
characterized by fiber morphology, pore structure and mechanical properties.
Mechanical Property.
Mechanical Properties.
The mechanical properties of a scaffold are an important design parameter for maintaining stability of the scaffold before the cells can produce their own ECM, which are dominated by (a) (b) (c) (d) intrinsic factors, such as the chemistry of the material, and by extrinsic factors, such as the dimension or architectural arrangement of the scaffold [22].
For the electrospun scaffolds, the mechanical properties are affected by the fiber structure, properties of the materials constituent, and their interactions [32].
Mechanical Property.
Mechanical Properties.
The mechanical properties of a scaffold are an important design parameter for maintaining stability of the scaffold before the cells can produce their own ECM, which are dominated by (a) (b) (c) (d) intrinsic factors, such as the chemistry of the material, and by extrinsic factors, such as the dimension or architectural arrangement of the scaffold [22].
For the electrospun scaffolds, the mechanical properties are affected by the fiber structure, properties of the materials constituent, and their interactions [32].
Online since: March 2010
Authors: Shi Chun Di, Guan Xin Chi, Ming Qiang Pan, Dong Bo Wei
The mechanical properties of the porous layer are poor.
Fig.1 The test method of coating hardness Fig.2 The coating surface microstructure Result and Discussion Formation of coating properties.
The mechanical properties of coating including hardness, wear resistance, et al. form in the last stage, and are due to the big discharge spark.
It is likely that these properties are the result of thermolysis process of anionic complexes, which occur in the near-anode region on the boundary of * DSA10 is the chemicals invented to treat Al by company.
Therefore, the factors that can promote the proportion of the crystalline phase in the whole coating all improve the coating hardness.
Fig.1 The test method of coating hardness Fig.2 The coating surface microstructure Result and Discussion Formation of coating properties.
The mechanical properties of coating including hardness, wear resistance, et al. form in the last stage, and are due to the big discharge spark.
It is likely that these properties are the result of thermolysis process of anionic complexes, which occur in the near-anode region on the boundary of * DSA10 is the chemicals invented to treat Al by company.
Therefore, the factors that can promote the proportion of the crystalline phase in the whole coating all improve the coating hardness.
Online since: August 2015
Authors: V. Sivakumar, E. Ganapathy Sundaram, B. Sakthikiran, T. Sanjay Krishnan, A. Riyaz Hussain
As a result the heat transfer between the system components of a solar still and thermal losses from the components will vary depending on their thermal properties like heat capacity, absorptance and thermal conductivity of components.
Due to this, the temperature variation of the different components of a solar still is not only the function of solar intensity nevertheless also the function of their thermal properties.
The various factors affecting the productivity of solar stills were reviewed by many researchers [1].
The physical properties of the water and the glass cover are constant in the operating temperature range. 10.
The input parameters for these equations include climatic data, operational parameters and thermo-physical properties of the conventional still.
Due to this, the temperature variation of the different components of a solar still is not only the function of solar intensity nevertheless also the function of their thermal properties.
The various factors affecting the productivity of solar stills were reviewed by many researchers [1].
The physical properties of the water and the glass cover are constant in the operating temperature range. 10.
The input parameters for these equations include climatic data, operational parameters and thermo-physical properties of the conventional still.
Online since: October 2015
Authors: Iqbal Makhtar, Mohd Yazid Yahya, Thamir Aunal Deen Mohammed Sheet Almula, Amran Alias, Amran Ayob
These composite pipes possess mechanical and thermal properties that exceed those of their constituent materials.
Traditional design method uses a global factor of safety taking into consideration uncertainties in industrial, loadings, properties of material and mechanical behavior.
The mechanical properties of the pipe material that are calculated using Eqns. 2-8 are: density, shear moduli G, elastic modulus E and Poisson’s ratio.
Table 2 shows the mechanical properties of the composite pipe
The elastic properties and orientations of the fibers were introduced.
Traditional design method uses a global factor of safety taking into consideration uncertainties in industrial, loadings, properties of material and mechanical behavior.
The mechanical properties of the pipe material that are calculated using Eqns. 2-8 are: density, shear moduli G, elastic modulus E and Poisson’s ratio.
Table 2 shows the mechanical properties of the composite pipe
The elastic properties and orientations of the fibers were introduced.
Online since: January 2013
Authors: Cheng Shun Chen, Sheng Yao Lin, Nai Kuan Chou
Schuessler [5,6] researched the influence of light pump lasers, diode-pump lasers, and femto-second lasers in cutting nickel-titanium, 316 L stainless steel, and cobalt-chromium alloy stents regarding kerfs quality, the heat-affected zone, cutting speed, area ratio, and the surface properties of materials.
Gachon et al. [8] examined the influence of laser cutting accuracy on the mechanical properties of stents.
Based on the con-side ration of biomechanical properties, an ideal stent should be equipped with following features: (1).
The used material is also an important factor in determining the performance of a stent.
The bio-mechanical properties of the material, like bio-compatibility, X-ray and MRI visibility, radial strength, flexibility, and durability, affect the performance of a stent.
Gachon et al. [8] examined the influence of laser cutting accuracy on the mechanical properties of stents.
Based on the con-side ration of biomechanical properties, an ideal stent should be equipped with following features: (1).
The used material is also an important factor in determining the performance of a stent.
The bio-mechanical properties of the material, like bio-compatibility, X-ray and MRI visibility, radial strength, flexibility, and durability, affect the performance of a stent.
Online since: December 2023
Authors: Loredana Santo, Fabrizio Quadrini, Denise Bellisario, Leandro Iorio, Alice Proietti
Depending on the orbit, Al can be replaced by PE in such a way to reduce the payload without affecting the shielding effectiveness [9].
Materials Selection PE properties, such as lightweight and shielding ability, make it particularly suitable to manufacture bulk radiation shields with a minimal payload.
At first, HDPE thermal properties have been evaluated by differential scanning calorimetry (DSC); the test has been carried out on 19.4 mg sample, heated from 36 °C to 180 °C with a rate of 10 K/min.
Conclusions At the state of the art, deep space exploration is prevented by environmental factors that strongly affect both the astronaut’s health and electronic devices performances; for this reason, developing an effective shield to GCR is fundamental to have successful long duration Space missions.
In future works, both shields are going to be tested to evaluate their actual shielding ability and the critical factors that mainly influences their behaviour.
Materials Selection PE properties, such as lightweight and shielding ability, make it particularly suitable to manufacture bulk radiation shields with a minimal payload.
At first, HDPE thermal properties have been evaluated by differential scanning calorimetry (DSC); the test has been carried out on 19.4 mg sample, heated from 36 °C to 180 °C with a rate of 10 K/min.
Conclusions At the state of the art, deep space exploration is prevented by environmental factors that strongly affect both the astronaut’s health and electronic devices performances; for this reason, developing an effective shield to GCR is fundamental to have successful long duration Space missions.
In future works, both shields are going to be tested to evaluate their actual shielding ability and the critical factors that mainly influences their behaviour.
Online since: June 2012
Authors: Jian Feng Li, Guo Liang Liu
Model of DC Motor.The equation of DC motor electrical part can be described as Eq.1:
(1)
where, i(t),ω(t),ua(t) are the current,angular velocity, and applied voltage, respectively.ke is the emf constant, depends on certain physical properties of the motor.
The mechanical part of the motor equations is derived using Newton's law, which states that the inertial load J times the derivative of angular rate equals the sum of all the torques τL & τe about the motor shaft.
Fig.1 Model of DC Motor (2) where km, the armature constant, is related to physical properties of the motor, such as magnetic field strength, the number of turns of wire around the conductor coil, and so on.
The torque τe seen at the shaft of the motor is proportional to the current i(t) induced by the applied voltage ua(t),J is the inertial load.kf is the torque damping coefficient caused by all factors such as loads, it is a linear approximation for viscous friction.
However, as a dynamic control object, multiple factors affect the performance of motor, such as structure, material, load, and other factors.
The mechanical part of the motor equations is derived using Newton's law, which states that the inertial load J times the derivative of angular rate equals the sum of all the torques τL & τe about the motor shaft.
Fig.1 Model of DC Motor (2) where km, the armature constant, is related to physical properties of the motor, such as magnetic field strength, the number of turns of wire around the conductor coil, and so on.
The torque τe seen at the shaft of the motor is proportional to the current i(t) induced by the applied voltage ua(t),J is the inertial load.kf is the torque damping coefficient caused by all factors such as loads, it is a linear approximation for viscous friction.
However, as a dynamic control object, multiple factors affect the performance of motor, such as structure, material, load, and other factors.