Search results

In order for the PU membrane to function well as a sensor matrix, it is imperative that it possess favorable mechanical properties and exhibit a high affinity for ion binding.
D2EHPA is an ionophore that is easy to get to and has lipophilic properties that let it interact with specific target ions in both directions.
Whereas a P-value > 0.10 indicates the model factors are not significant.
The factors that significantly affect the physical performance of this membrane are A and B, namely D2EHPA and ĸ-carrageenan.
The corresponding equations are calculated based on Equation (1), which contains three single-order factors (A, B, and C), three interactive factors (AB, AC, and BC), and three quadratic factors (A2, B2, and C2) for the determination coefficients of Y (R2 = 0.91).

Factors such as FS softening and insufficient joining, limited the fracture strength of the lap welds for small h values and these are presented and discussed.
Although the phenominon that the formation of a hook during FSLW could adversly affect the properties of lap welds is generally understood, a more quantitave relationship between the degree of hooking and FS parameters is yet to be developed.
Furthermore, the relative importance of the size of the hook and the degree of softening due to FS heat affecting the properties of age hardened Al alloy FSL welds has not been clear.
How processing conditions affect this h value and how this h value could affect fracture strength of the joint are the focus of the analysis below.
However, hooking is not the only factor affecting fracture strength, as various modes/locations of fracture were observed.

Therefore, the mechanical properties analysis of the cushion seals becomes very important.
Meanwhile, The performance of cushion seals greatly affect the amount of gas leakage, thus affecting the capacity of the pneumatic drive[2].
On the other hand, we can also directly enter the known value of , into Abaqus to define the material properties of rubber material.
Here we assume that the friction is linear, ignore the speed and other factors influence on the friction, and define the coefficient of friction μ=0.2. 6）In the meshing module, set the unit seed spacing as 0.2mm.Select "Medial axis" meshing algorithm and "free" meshing method.
Finally, set the properties of unit as "Linear" and "Hybrid formulation".

The tool stability and its wear are important factors that determine the patterns of change in systematic and random errors during processing.
The purpose of processing hardened steel at a temperature below room temperature is to remove residual austenite from the structure and subsequently affects the properties of the steel.
Studying the qualitative properties of the surface layer allows us to determine the nature and nature of the influence on these properties of the main factors of the grinding process and allows us to optimize processing processes to achieve the best quality characteristics of parts and the efficiency of their production.
S. [8] investigated the metallurgical and mechanical properties of cryogenically treated AISI M2 high-speed steel (HSS).
When the temperature decreases, the thermoreactive effects in crystalline bodies decrease: the physical and mechanical properties change significantly.

The factors causing the degradation of marble can be both intrinsic and extrinsic.
The latter are linked to external factors, such as the temperature, pressure and relative humidity, to which the stone is subjected.
These degradation factors produce a worsening of the mechanical properties of the material [1], such as an increase in water absorption and a decrease in flexural strength, due to the increased porosity of the rock, and in some cases, mainly in marble, can be linked to bowing.
Table 3: Physical and mechanical properties in natural conditions (original values), after natural ageing and artificial ageing of the marbles tested.  
Stigh, Relationship between texture and mechanical properties of granites, central Sweden, by use of image-analysing techniques.

Introducing the machining-ability of the surface of hydrogenated cylindrical shell’s blank, and the analysis showed that one of the main macroscopic factors which caused the tool to be broken early was forging defect.
The defect causes the cutting depth to make dynamic changes, so that the tool will be affected by the dynamic mechanical load and thermal load (refer with: Fig. 3).
The Calculation of Tools’ Dynamic Strength The forging defects on the surface of large-sized forging can severely affect the service life of cutting tools, especially the exist of both forging shovel and forging crack, they will cause the cutting force to fluctuate greatly, and the rapid rise or sudden drop of the cutting force will lead into enormous mechanical impact.
Figure 5-b is to analyze the dynamic mechanical impact that the tool withstands, seen from which dynamic mechanical impact on cutting area is decentralized.
Therefore, the foregoing model can be used for determining the tool life of various materials, and at the same time, both the creep resistance and strength property should be taken into account when selecting the tool materials.

In this study, the RVE model was developed in order to examine the mechanical properties (i.e.
Introduction Nickel-based superalloys exhibit exceptional mechanical properties at elevated temperatures due to the inclusion of elements such as chromium, iron, and niobium.
By analyzing the microstructure, researchers and engineers can gain a deeper understanding of the mechanical properties of the alloys.
In detail, as those factors decrease or increase the number of elements that a particular mesh applies, to understand the impact of the identified factors on the simulation result, a mesh sensitivity test was conducted.
Lu, ‘Multi-scale simulation of nanoindentation on cast Inconel 718 and NbC precipitate for mechanical properties prediction’, Materials Science and Engineering: A, vol. 662, pp. 385–394, Apr. 2016, doi: 10.1016/j.msea.2016.03.081

On the other hand, water leaking into the tunnel can cause tunnel settlement, structural damage, corrosion, traffic hazard, affecting the appearance of the metro and so on.
One of the solutions to this problem is to understand the mechanical of joint opening and its factors.
In this paper, in order to investigate the mechanical behavior of joint of segmental concrete tunnel liners, an analytical solution is developed and the related factors affecting the magnitude of joint opening are analyzed.
Mechanism of rubber gasket sealed whereis the required total gasket contact pressure, m is the coefficient of rubber gaskets, which is related with the material properties, andis the water pressure.
Therefore, bolt location d is an important factor affecting the joint opening.

More investigations on such biocomposites are needed to improve fiber-matrix interactions. 1.5 Factors Influencing Composite Properties.
Many factors combine to affect the properties of a composite material; ultimately, however, the properties of a composite are dictated by the intrinsic properties of the constituents.
How these properties are harnessed to reinforce a composite material is largely governed by the same factors that affect other fibre composite materials, namely the fibre architecture and the fibre-matrix interface.
Nevertheless, the properties of a biocomposite may be controlled and indeed enhanced by altering those factors that control composite properties, namely fibre architecture and the fibre-matrix interface.
Properties of Biocomposites: Mechanical Properties.

● Cation substitutions, structures and properties change, forming new minerals.
● The permeability and wettability of cores affected by such factor as the property of the electrical double layer, the electrical conductivity of the system, the magnitude and direction of the electrical potential gradient, and the ratio of the electroosmotic to hydrodynamic water transports
Pozdnyakova, "Electrical Properties of Soils,〞PhD Thesis, University of Wyoming, United States, 1 999
Wang, " Factors Affecting Electroosmotic Drainage of Backfill Soil, 〞Geotechnical Engineering Teclmique, Vol. 21, Jan. 2007, pp. 4-10
Hall, "Modification of the Properties of Salt Affected Soils Using Electrochemical Treatments,〞Geotechnical and Geological Engineerin9,Vol. 25,Jan.2007,pp l—l0