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That is why the development of new algorithms for calculating the stress-strain state and durability of the structure, which are under the influence of the general action of several factors, is an urgent problem.
Available data about the study of changes of strength and deformation properties of welded joints, including conditions of varying degrees of exposure of aggressive mediums, as well as existing and proposed methods of calculating welded joints based on mathematical models to a large extent allow predicting the work of welded joints.
However, existing developments still do not have a general approach and do not reflect the real picture of the work of welded joints, taking into account the factor of reducing the working section of welds as a result of corrosion processes.
The Frequency Equation To study the changes of the strength of welds in time that have undergone corrosion, a plan and experimental studies have been developed: - the properties of the strength of the welds were determined, which were both at the usual conditions and the influence of various aggressive medium with a certain time interval; - the ratio of the strength reserves of the welded elements and the welds under the influence of various aggressive medium is obtained.
The method of determining the percentage reduction of the area of the working section of the test samples was taken as a basis for the study of the state of cross sections obtained as a result of mechanical cutting and measurements thickness of the layers obtained during the impact of various aggressive medium.

In mechanical clinching, Varis and Lepistӧ5 and Lee et al.6 used the finite element method for clinching tool design.
On the other hand, the elasto-plastic FEM is mainly employed to sheet forming, where the springback caused by elastic strains is an important factor to deal with.
As a result, this will not only affect on overall accuracy of the simulated result caused by the error in volume loss, but also give a longer computing time with smaller time step and more elements by the remeshing procedure.
The material properties and working conditions used for the simulation are listed in Table 1.
Table 1: Material properties and working conditions for the simulation.

Biodegradation properties also help in controlled release of encapsulated growth factors, drugs, biomolecules and cells from the hydrogels which will help in enhancing the tissue regeneration.
Permeability Properties of Hydrogel.
The swelling characteristics are crucial to the use of hydrogels in biomedical and pharmaceutical applications since the equilibrium swelling ratio affects the solute diffusion coefficient, surface wettability and mobility and optical and mechanical properties of the hydrogel.
The swelling properties are determined by many factors, including the type and composition of monomers, crosslinking density and other environmental factors such as temperature, pH and ionic strength. [79].
Shibayama, Structure-mechanical property relationship of tough hydrogels, Soft Matter. 8(2012) 8030–8038

Introduction Austenitic stainless steels such as SUS304 and SUS316L have been used for medical implants due to their superior corrosion resistance and mechanical properties.
Microstructures Fig.6 shows the microstructures of weld nugget and heat affected zone.
Any metallic carbides that often cause grain boundary corrosion were not observed in the heat affected zone by optical microscopy.
Austenitic stainless steels are better adapted to medical implants because it will hardly affect a magnetic resonance image scanning (MRI).
Welding current and weld time affect joint strength and nugget diameter.

The ECAP process, the most prominent representative of the SPD method, is attractive because it leads to significant grain refinement, typically to the submicrometer range, and this introduces superior mechanical properties including high strength at room temperature [5,6], if the grains are stable at elevated temperatures, a superplastic capability at reasonably rapid strain rates[7,8,9].
For more details on the principles of ECAP processing and attainable microstructures and mechanical properties, see Refs. [7,10].
UFG materials generally reveal only a small strain hardening capability, but mechanical instability like necking can also be prevented by strain rate dependent deformation behavior.
The SRS is affected by many factors: the grain size (d), the dislocation, the temperature (T), the strain rate (), the processing route and so on.
Conrad: The Cryogenic Properties of Metals.

In the 1960 s, the bionics was established as a subject, the development of science and technology combined with the design style of the diversity of products meets the consumer of the form, the future of the diverse needs of design will pay more attention to product individuation, temperament and factors, bionic design will become future product modeling design is one of the important methods.
Design personnel of creativity, usually have observation, memory, imagination, expression force and self-control, etc DuoZhong create a factor, the creativity is the function of variables, create factor any create factor improvement of related to the improvement of the creativity, and design personnel of high and low and creativity into full play, not only directly affect the quality of product design, but also related to the economic benefit of enterprise.
Therefore, should be designed according to the natural and social properties in ecological design, the flexibility and adaptability to satisfy the individual needs delete.
Research on biological structure form, in the perceptual knowledge, and on the basis of factors, and remove irrelevant simplifies, through the analysis to find its in design and use of place is worth using for reference [12]. (5) motion analysis.
[2] The mechanical nets http://www.xn-fiqw8jfru01b.com/aspxInfold=618

Setup Modelling The cage is manufactured out of reinforced PEEK, meaning that the mechanical properties of the cage material are neither unform nor isotropic.
The transition layer is elastic and isotropic, and its elastic constants are estimated by homogenising anisotropic properties of the cage material.
It is not unusual that size effect strongly affects mechanical properties, especially for materials with complex microstructure.
This is necessary because the cage is designed for long-term operation, meaning that such phenomena as fatigue and creep are significant factors limiting its service life.
Parodi, Structure Properties Relations for Polyamide 6, PhD Thesis, TU Eindhoven, the Netherlands, 2017

They impart new properties to the surface of the dispersed phase and the system as a whole [8-12].
The stability of the suspension obtained by ultrasonic dispersion in the aqueous medium of the surfactant as a property to resist the aggregation and sedimentation of the particles depends on many factors, and can be shown in the form of a figure as follows (Fig. 1).
Factors affecting the stability of the suspension obtained by ultrasonic dispersion The objective of the work is to study the stability of the suspension of titanium dioxide of anatase modification obtained by ultrasonic dispersion in the aqueous medium of the stabilizer for self-purifying fine concrete as a finishing material of building envelope.
Later, the adsorption of polar particles is carried out on new interphase surfaces, thus leading not only to a uniform distribution of titanium dioxide particles in the aqueous medium, but, probably, to a uniform distribution of surfactants on the surface of TiO2 particles in the "titanium dioxide – water – stabilizer" system, thereby increasing the electrostatic and structural-mechanical factors of suspension aggregate stability.

Drum is the main component of belt conveyor, its service life seriously affect the normal operation and production of belt conveyor.
Rollers structure determines loading quantity and quality of the conveyor belt and the roller bearing size and properties to a great extent.
Service life is not less than 50000 hours, rotation resistance factor is less than0.010, and torsion angle of roller shaft is less than 10'.
Colliery Mechanical ＆ Electrical Technology.
Colliery Mechanical ＆ Electrical Technology.

The magnetic properties of Fe3O4-CS microspheres were characterized with a vibrating sample magnetometer (VSM, ADE EV5) by measuring the applied field dependence of magnetization between -20,000 and 20,000 Oe at 25○C.
With different properties that affected the proximity of soluble enzyme molecules, enzyme was deposited to form aggregates and later reacted with cross-linker like glutaraledhyde which were termed CLEAs [7].
In Fig. 3 the amount of glutaraldehyde used in the preparation of CLEAs has shown to produce different effects on the properties of the biocatalyst obtained.
For the magnetic properties of Fe3O4-CS microspheres, the value of saturation magnetization was 16.15 emu/g in Fig. 6.
The results indicated that the chitosan did not affect the magnetic separation of microspheres.