Search results

The extraordinary mechanical, electrical [2], thermal [3] and molecular transporter properties of MWCNTs make them ideal candidates for large application potential.
Hence, the mechanical properties and graphitic structure of crude MWCNTs are retained [11].
Several factors might account for such reduction, for example, the structure erosion of MWCNTs [14] and transformation of the existing functional groups into gaseous.
This result indicates that the nitric acid treatment of MWCNTs does not affect the crystalline structure of MWCNTs.
Effect of carbon nanotubes on properties of graphite/carbon black/polypropylene nanocomposites.

The rotary compressor type has also proven durability and high efficiency for automotive applications while offering smaller form factor at the same time [4].
However, a significant friction loss occurs between the vane and the cylinder which reduces the mechanical efficiency and cause wear.
The critical factors affecting the overall efficiency of rotary vane and rolling piston compressors are mainly the friction and leakage losses.
Therefore, to overcome the above mentioned drawbacks of the existing rotary compressors, a novel four-chamber rotary compressor that has been designed with the goal of simultaneously reducing both friction and leakage losses, which are significant factors impacting rotary compressor performance.
Marks' Standard Handbook for Mechanical Engineering1997. p. 14-28

Introduction Since the introduction of stone machining tools based on metallic bonded diamond grains, a close adaption of the cutting segment specification to the properties of the stone material is necessary.
This includes the configuration of the diamond concentration and size distribution but also the properties of the metallic bonding.
A mechanical dressing process is only used after the tool manufacturing in order to avoid mechanical and thermal damage due to insufficient grain protrusion.
Here, already minor deviations from the ideal parameter set or variations of the workpiece properties can cause severe tool damage.
Further research is done to identify parameter combinations affecting the segment topography fast and effectively.

Corneal damage can be caused by various factors, namely diseases and injuries that cause visual disturbances to blindness.
This means that sample A and sample B have strong antibacterial properties.
Antibacterial properties in samples A and B were obtained from chitosan.
All ingredients are good with HPM or do not show excellent antibacterial properties.
Yoo, “Pluronic/chitosan hydrogels containing epidermal growth factor with wound-adhesive and photo-crosslinkable properties,” Journal of Biomedical Materials Research, Part A, vol. 95, no. 2, pp. 564–573, 2010

Generic physically-based modeling concepts are currently in strong demand to enable the understanding and control of the "field effect" - a distinguishing set of factors rendering different spark- plasma vs. conventional hot pressing and sintering results.
One possible way of assessing the significance of the electromigration contribution to the overall shrinkage kinetics is by comparing the levels of effective stresses corresponding to various factors influencing SPS.
The reports on the level of the electromigration-induced stresses are somewhat scattered (this stress is obviously affected by the intensity of the electric field and material parameters).
Our analysis indicates that the external load's contribution to the grain-boundary diffusion (corresponding to dl gbxε& ) is much smaller than the contribution of other factors.
One can see how the magnitude of the contributions of three different factors change with changing the grain size.

Variations of difference field under different mismatch factors for n=7 are partly presented in Fig. 5
(2) It can be found that normalized stress functions for n=7 under different mismatch factors coincide reasonably with each other, and the normalized stress functions and are slightly influenced by the radial distance and mismatch factor.
The normalized stress function is proposed by Dai et al. [12] as follows: (3) Fig. 5 Variations of difference field under different mismatch factors for n=7 (a) ; (b) Fig. 6 Variations of normalized stress function under different mismatch factors for n=7 (a); (b); M* and its explanation Fig. 7 presents the variations of with the mismatch factor.
Fig. 7 Variations of M*-parameter with different mismatch factors As usual, the Q-term is strongly dependent on the applied loading level.
The load independence property for the M*-parameter is verified.

In recent years, the CALPHAD (CALculation of PHAse Diagrams) approach which employs collected experimental data to obtain a reliable assessment of properties and metastable phase diagrams basing on thermodynamic modeling is developed.
Experimental Results and Discussion The carbide size distribution is a major controlling factor in the mild oxidational wear of materials.
Fig.3 Mechanical properties & fracture morphology Fig.4 Carbides distribution of Cr12MoV steel & new steel Authors [11] have researched that the critical events of cleavage fracture is the second phase particles to expand into micro cracks of ferrite.
The carbides size distribution plays an important role in mechanical properties of steel.
Moreover, the carbides also affect the obdurability, antifatigue-fracture and wear resistance of steels.

Therefore, it is essential to understand which factors affect the site occupancy as well as the impact of the cationic distribution on structural and magnetic properties. 2.2.
Like any sound wave, it is transmitted as a series of compression and rarefaction cycles affecting the molecules of the liquid.
All these factors can make a selective and effective thermal therapy for cancer treatment.
Afterwards, the cell internalization distinctly affects the magnetic properties of the studied nanomaterials.
Another factor that can affect removal process is the environmental.

The optimum degree of process parameters towards aperture quality was obtained. 0BIntroduction Glass Fiber Reinforced Plastic (GFRP) composites are most widely utilized in aerospace, construction of military conveyances and machine implements owing to their multi potential properties [1, 2].
König et al. [5] verbalized that cutting forces such as thrust force and torque, which depend on cutting parameters affects the surface quality.
Wen-Chou Chen [6] related the delamination factor with the average thrust force for the drilling of uni-directional and multidirectional composites.
Table 1: Mechanical properties of GFRP composites Mechanical properties ASTM standards Units Value Pultruded bar SMC bar Tensile strength D638 MPa 562 410 Tensile modulus D638 MPa 3875 3215 Tensile elongation D638 - 15.50 % 17.30 % Compressive strength D695 MPa 475 314 Compressive modulus D695 MPa 13194 10130 Flexural strength D790 MPa 82 58 Shear strength D2344 MPa 235 204 The mechanical properties of the workpieces have been ascertained by various tests and are presented in Table 1.
Diterlizzi, Effect of drilling parameters on the finish and mechanical properties of GFRP composites, Int.

The launch power device is in a long-term storage state, and the sealing components, such as rubber sealing gaskets in its sealing structure, will age due to the comprehensive influence of various factors.
The rubber-sealing gasket, as a polymer material, continuously ages under the influence of environmental factors such as temperature and humidity, leading to a decline in its performance.
This affects its mechanical behavior and macroscopic mechanical properties [16].
Research progress on photooxidation aging and anti-aging properties of natural rubber [J].
Micromechanical based model for predicting aged rubber fracture properties [J].