Search results

The probable wind conditions under service phase as well as the accurate evaluation on the corresponding results are the crucial factors that should be taken into consideration during membrane structure design.
Structural control, developed in the 1970s, is a new design method to improve the mechanical behavior of the structure by control device in view of classical or modern control theory.
SMA is recognized as the most promising smart material in the structure vibration control for its special shape memory effect, unique super elasticity, high damping, better restorable ability and good fatigue properties.
For example, the project we investigated is located at class B landforms, the highest point is 25m, the reference wind pressure is 0.50KN/m2, the pressure coefficient of height variation is 1.335, the coefficient of wind-induced vibration is 1.9 [3], the shape factor of wind load is 0.4 [4]; according to load code for the design of building structures [5], the static pressure is 507.3 N/m2.
The rigidity of SMA spring is a function of marten site fraction, and the percent content is affected by temperature and external load.

The forward velocity of the cavity is the most important factor which has a pivotal influence for the degree of orientation and residual stress of product [1].
It's RIM module can be used here through changing some process conditions, for example, the maximum injection pressure, material's properties and so on[4].
Fig.8 The expected pressure curve Conclusions In order to keep the forward velocity as smoothly as possible, a detailed study of the most important pressure parameters that affect the quality of the final VC parts, namely, the pressure values, is performed to assure constant forward velocity in the present investigation.
Using this CAE model and BP-NN analysis techniques, together with MATLAB software, the expected pressure curve, the factors that are most significant for serving the filling control system can be achieved.
Acknowledgements This work is supported by Innovation Foundation of SHU (A.10-0109-08-010), Shanghai Science Foundation for the Excellent Youth Scholars (B.37-0109-08-004), and the fund of Shanghai Key Laboratory of Mechanical Automation and Robotics (D.10-0109-09-006).

Integration of these materials into working devices requires precise control of surface properties.
These GXL properties allow tuning of liquid properties by inclusion of high pressure gases.
All other samples displayed an increase in dielectric constant by factors of 5-10, although sample thicknesses (~600 nm) and water contact angles were essentially constant before and after processing.
These studies suggest that photoresist and etch residue can be removed from low k MSQ films with GXLs without degradation of film properties, provided that a final high pressure CO2/CH3OH rinse is invoked for MSQ property recovery.
We demonstrated that moderate pressure liquids such as TMAHCO3/CH3OH expanded by CO2 (GXLs) can be used to effectively remove photoresist and plasma etch residues without significant degradation of low film properties, although a high pressure CO2/CH3OH rinse is required in order to fully recover the low k film properties.

The occurrence of the secondary γ′ precipitation resulted from the complex interaction of multiple thermodynamic and kinetic factors in the γ′ nucleation and the diffusion rate of γ′ forming elements.
Due to its excellent high temperature mechanical property, superior resistance against hot corrosion and oxidation at elevated temperature, it is widely used for components in the hot sections of gas turbines for aero-engines.
The excellent high temperature mechanical property is mainly acquired by a large amount of coherent γ′ precipitates from the γ matrix in Ni-based single crystal superalloy [2–4].
In order to explain the above results of the primary γ′ size changes, the thermodynamic and kinetic factors need to be considered for the formation of the primary γ′ precipitates.
Based on these discussions, the secondary γ′ precipitates result from the complex interaction of multiple thermodynamic and kinetic factors such as driving force for the γ′ nucleation (critical nucleation barrier, ΔG*), the γ′ nucleation sites (related to the nucleation rate) and the diffusion rate of γ′ forming elements.

Introduction Grain-oriented electrical steel is an important magnetically soft material for transformer cores due to its excellent magnetic properties.
In the production process of GOES, there are many important factors that affect the resulting magnetic properties, the progress of secondary recrystallization and the associated sharpness of the Goss texture.
One of these factors is the use of inhibitors to supress normal grain growth after primary recrystallization and thus to provide the driving force for secondary recrystallization [4 - 7].
Specimens for LM and SEM analyses were prepared by mechanical grinding, polishing and etching.
CZ.02.2.69/0.0/19_073/0016945 within the Operational Programme Research, Development and Education, under project DGS/TEAM/2020-026 “Study of phase transformations in cast strips GOES”, the projects of Student Grant Competition SP2022/33 “Study of the relationship between the microstructure and properties of progressive technical materials, degradation mechanisms and behaviour of progressive technical materials in different operating conditions” and SP2022/68 “Specific research in the metallurgical, materials and process engineering”.

What has been studied on welded hollow spherical joint[2] indicates that the properties under 3-D load are similar with under one-way load and bearing capacity is mainly determined under one-way load.
In order to describe nonlinear properties of load-displacement curve, the loads of the joint are applied by controlling the values of displacement.
Consequently the above properties obtained by studying on the cast steel spherical joint under tension are suit for the joint under compression too.
According to the above definition, the influencing factors on bearing capacity of cast steel spherical joint subjected to tensile force are the same with those of joint subjected to compressive force.
The effect of diameter of cast steel tube on bearing capacity The outer diameter of cast steel tube affects bearing capacity greatly.

The problem of resistance of spacecraft external surfaces to space factors is important due to development of long-duration orbital space flight missions.
AO is one of the most important factors causing severe damage to many polymeric materials on spacecraft.
Movement of the focusing lens along the vertical axis was carried out with a minimum step of 0.1 mm, which allowed controlling the diameter of the focusing spot and, accordingly, the density of laser radiation power affecting the surface of the material.
Due to the microscopic inhomogeneities and cavities on the side walls of grooves and pyramids, as well as due to the inherent absorption properties of MWCNTs ‘Taunit-M’, it is possible to increase the efficiency of structured materials.
Novikov, Structural and mechanical properties changes in carbon and boron nitride nanotubes under the impact of atomic oxygen, in: J.

The structural performance of body directly affects the security and mobility of vehicle.
It is necessary to do modal analysis of the vehicle body for investigating its dynamic properties under vibration excitation.
From the modal analysis of the body, several files can be got including the modal analysis result, the material properties of the body, the element matrix and interface nodes.
In this paper, considering various factors, the beam layout under the top surface of the hull is adjusted according to the topology optimization density contour to strengthen the body structural stiffness.
So the beam layout optimization doesn’t destroy natural properties of the body.

When ground shake caused by blasting reach to the certain strength, it will have different degree of damage on ground, underground building and project structures etc and affect production stability and security.
Iron physical and mechanical properties: the surrounding rock of iron body is mainly grained biotite gneiss.
The safety factor of ore is 12~14 and rock safety factor is 8~12.
Station Layout The major influence factor of blasting ground shake is explosive quantity and distance from blasting center.

Particular attention is paid to the use of chrome plating methods making possible to increase the durability and reliability of the parts recovered in electrolytes of different composition, allowing to obtain coatings with high physical-mechanical properties that determine their suitability for the operation in the process of use for their intended purpose.
The use of periodic currents in repair production (by reversing direct, rectified currents, conversion of industrial frequency currents) allows adjustment of the amplitude duration and its magnitude in the cathode and anode component of the current, which makes possible to control the structure and the texture of the formed sediment and thereby its physical and mechanical properties [1-5].  
In this regard, the purpose of the study is a low concentrated electrolyte of chromium plating with organic additives (150 g / l CrO3 + 1.5 g / l H2SO4 + 1.5 g / l crystal violet (CF)) and the physical-mechanical properties of chromium coatings.
They are highly economical, technological, environmentally friendly and make possible to obtain coatings with the required physical and mechanical properties.
During pulsed electrolysis, it is possible to control the composition of the components of chromium and iron alloys and to obtain coatings with desired properties from a single electrolyte.