Search results

Since the characteristics of molecular motion differ above and below the glass transition temperature Tg, the mechanical properties differ markedly above and below Tg.
The main factors in the strain-holding conditions to affect these characteristics are temperature, time and strain during strain-holding.
(1) Dynamic mechanical properties The relationships between storage elastic modulus E' and loss tangent tan δ versus temperature T of the film obtained by a dynamic mechanical test are shown in Fig. 2.
(2) Tensile deformation properties The relationships between stress and strain at Tg and Tg±20K obtained by the tension test under strain rate of 50%/min are shown in Fig 3.
References [1] Hayashi, S., 1993, Properties and Applications of Polyurethane Series Shape Memory Polymer, Inter.

One of the significant factors is also climatic changeability.
The other factor is that there was only one tile tested and it is necessary to test more specimens for getting the needy statistical data [7], [11].
FR-TI2/746 “Rheological sliding joint with thermo-controlled viscoelastic properties” and partially by the project “Conceptual development of science and research activities 2013” on the Faculty of Civil Engineering, VSB-TU Ostrava.
Manasek: Finite Element Analysis of a Structure with a Sliding Joint Affected by Deformation Loading, in B.H.V.
International Conference Geomechanics 93, Strata Mechanics/Numerical Methods/Water Jet Cutting/Mechanical Rock Disintegration, Pages 233-236, Ostrava, Czech Republic, Sep 28-30, (1994) [10] P.

So it is not easily affected by metal ions and mechanical shear degradation of reservoir.
Results and discussion The influence of polycondensation monomer molar ratio on the properties of crosslinking agent.
Formaldehyde as the hydroxymethylation reagent of phenol, its content is an important factor in determining hydroxymethylation degree which is closely related to the performance of weak gel [10].
Reaction temperature and time are the important factors to polycondensation.

The current work therefore focuses on detailing the underlying mechanical principles that lead to an explanation of the formability enhancement as a function of process and material properties.
In order to take all these factors into account, detailed 3D solid element FE-simulations of ASBT is performed to study the physical mechanism of enhanced formability under stretch-bending.
The effect of these factors on the stretch-bending formability is investigated and summarized in the following.
This shows that the punch radius as well as material properties have a significant role on the strain path evolution during stretch bending.
The underlying physical factors are bending and thickness stresses, which have a significant effect on the major stress gradient and non-linear strain path.

Ballistic Materials In designing soft body armors, high strength and high modulus fabrics are most essential properties [1,3,6].
Table 1 display the mechanical properties of most common ballistic grade materials [2,4-7].
Table 1: Mechanical properties of typical ballistic fibres.
This affects the frictional interaction between the yarns and thereby improves the ballistic properties.
However, it is important to notice the factors concerning with armor product design and development.

The incorporation of hydrogen into WO3 can strongly influence the material's electrical, optical, and structural properties.
Elevated temperatures can induce phase transitions in WO₃, potentially altering its crystalline structure and electronic properties.
Furthermore, higher temperatures might enhance thermal vibrations within the lattice, affecting the interaction dynamics between hydrogen ions and the WO₃ matrix.
Kand, Optical and electrical properties of thin films of WO3 electrochemically coloured, Electrochim.
Granqvist, Electronic structure and optical properties of WO3, LiWO3, NaWO3, and HWO3.

Szkodo Gdansk University of Technology, Faculty of Mechanical Engineering, ul.
This work presents investigations of cavitation properties of different austenitic microstructures formed by laser beam machining of X5CrNi18-10 and C45 steels.
The microstructure of eroded material is a key factor in the control of its cavitation resistance.
sample C45 alloyed surface layer heat affected substrate Fig. 2.
Cavitation properties of laser-processed materials were calculated on the surface of 4 mm2.

As a connecting link, the cap of pile supports on the piles under column and it is the so important specimen of foundation that the research of the mechanical properties of SFRC four-pile cap becomes very meaningful.
The mechanical behavior and bearing capacity of pile caps with high strength concrete may be improved through the addition of steel fiber; its thickness may also be reduced.
The four specimens were designed, which had the same reinforcement ratio, concrete strength, the volume fraction of steel fiber and the geometry size except the thickness varying from 150mm to 400mm to investigate the affect of the effective thickness of pile cap on the load at cracking and ultimate.
When the thickness increases from 300mm to 400mm, the cracking load and the ultimate load increases by 162.5% and 94.7% respectively, which means that the effective thickness may be a main influence factor on the bearing capacity of pipe cap.
Beijing: Mechanical Industry Press, 2004, 1

The present work was aimed to investigate the HAP feedstock flow properties via rheological analysis using 100 % of PS binder.
The result indicated that mixing temperature was the main factor and can give high influence to the feedstock homogeneity and affect the properties to the next process.
Regarding to its properties it can be injection molded at lower operating temperature and obtain lower viscosity feedstock.
The higher temperature will contribute to less viscous and high flowability properties.
Norhamidi, Powder Injection Molding of SS316L/HA Composite: Rheological Properties and Mechanical Properties of the Green Part Journal of Applied Sciences Research, (2012) Vol 8(11), p. 5317-5321

Major contributing factors are sheet-die friction and die geometry.
The two factors are in fact intertwined; for example, in an early study by Ghosh and Hamilton [3], they found that the effect of friction coefficient on the thinning behavior near the die radius was dependent on the size of the die entry radius itself.
Some of the geometric factors that affect the thickness distribution include; die aspect ratio, entry and bottom radii, flange width and the wall inclination angle.
It has the advantage of being easy to prepare [6, 7], relatively cheap [7], and exhibits superplastic properties at room temperature [7].
The lower the thinning factor, the greater is the deviation in thickness distribution along the mid-section profile.