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Sound joints with good mechanical, microstructural and corrosive properties are obtained when these parameters are set at optimum values.
Studies on FSW process to explore the thermal history, material flow, microstructural evolution and mechanical properties are available in published literature.
Sohrabpoor, Optimization of friction stir welding process of AA7075 aluminum alloy to achieve desirable mechanical properties using ANFIS models and simulated annealing algorithm.
Nourouzi, Effect of Welding Parameters on Microstructure, Thermal, and Mechanical Properties of Friction-Stir Welded Joints of AA7075-T6 Aluminum Alloy.
Xing, Effect of tool pin eccentricity on microstructure and mechanical properties in friction stir welded 7075 aluminum alloy thick plate.

Many factors influence quality of powder obtained by milling.
Letyuk, Physico-chemical basics of production, properties and applications of ferrites, Metallurgiya, Moscow, 1979
Kaneva, Estimation of ferrite powders activity by microdistortion energy, in: Ferrites structure and properties, Nauka i tekhnika., Minsk, 1974, pp. 128-132
Podgornaya, Study of strontium hexaferrite powders milling duration influence on microstructure and properties of magnets on their basis, J.
Lyubina, Structure and magnetic properties of nanocrystalline alloys based on Nd2Fe14B obtained by various techniques.

The challenge is then to understand how polymer nanostructure impacts the properties of materials and enables discrete control of the desired materials' properties.
To bridge the gap between scientific and engineering approaches towards improved understanding of the structure-performance correlation in polymer devices It is generally accepted that a better understanding of the structure-property relationships, i.e. of the relationships between composition, processing, structure/morphology, dynamics and properties, is a necessary condition for optimizing the design of polymer nanostructured materials with predicted properties.
For example in the case of polymer nanomaterials to be used in the membranes field, molecular modelling used to obtain a deeper understanding on the relations between molecular structure-transport/barrier properties and to get a detailed insight in transport and other (e.g. mechanical, biocompatibility, controlled release) properties for polymer and blockcopolymers will be provided.
While nanoscale materials possess more novel and unique physicochemical properties than bulk materials, they also have an unpredictable impact on human health.
The peculiar and unique approach of the project, which aims to relate the macroscopic properties with the structural architecture of polymeric materials at molecular level, will contribute to identify the key factors that govern formation of ordered nanopatterns in hybrid systems.

Weather, moisture content, temperature, soil properties, salinity, humidity, wind direction and some parameters taken into consideration when discussing environmental factors in term of atmospheric environment.
Effect of Silica Sand Filler on Mechanical Properties of Epoxy Grout for Composite Repair of Steel Pipelines.
Mechanical properties of graphene-modified epoxy grout for pipeline composite repair.
Mechanical properties of graphene nanoplatelets-reinforced epoxy grout in repairing damaged pipelines.
Jurnal Teknologi MECHANICAL PROPERTIES OF NANOTUBES-MODIFIED EPOXY GROUT FOR.

But cost is still the main factor, which restricts the PV development.
Main affecting factors of lifetime include crystal defects, impurity concentration and so on.
Many thermal donors will directly affect the properties of solar cell.
Although the cost at current is higher than CZ-Si, by optimizing growing conditions and mechanical structure of the stove to increasesilicon crystal output, the cost can be decreased greatly even lower than CZ-Si.

Ghani e Dept. of Mechanical & Material Engineering, Universiti Kebangsaan Malaysia, Bangi, Malaysia a faxury@yahoo.com.my, babubakar@eng.ukm.my, ckimi_ilmn@yahoo.com, dchase@eng.ukm.my, e jaharah@eng.ukm.my Keywords: Stainless steel; Surface roughness; Insert nose radius Abstract.
Austenitic typed stainless steels mainly used because it can withstand operation at high temperature and higher corrosion resistance properties [1].
Surface roughness has affected by many factors like the cutting tool geometry, depth of cut, cutting speed, feed rate, the microstructure of work piece, the rigidity of the lathe [4].
If the value less than the confident interval, the factor are significant due to the response.
In the limits of test, the parameters affecting the average surface roughness are, in respect of importance, as the following: feed rate, insert radius and cutting speed.

It is known that fracture toughness value is affected by test temperature, specimen thickness and loading rate.
Sample material used is HT780 high tensile strength steel; mechanical properties are shown in Tabel 1.
Table 1 Mechanical properties Yield Stress [MPa] Tensile Strength [MPa] Elongation [%] 807 867 19.2 Tensile test specimen shape is 5mm in the test part diameter, and gage length 20mm shown in Fig. 1.
In general, stress intensity factor rate K ．
Murakami: Stress Intensity Factors Handbook (The society of materials science, Kyoto 1987) [4] M.

Probably, the most common technique for joining the rail in track on-site, for various reasons including easier alignment and other on-site factors (simplicity, portability and economy), is alumino-thermic welding [2,3].
The MZ is surrounded by a heat-affected zone that varies from 15 to 25 mm.
MZ HAZ PR PR X-ray radiograph [1] MZ HAZ MZ Web (W) Foot (F) Thermite weld Head (H) (a) (b) The mechanical properties are given in Fig. 5 and 6.
This superimposition may be in the linear elastic or nonlinear elastic plastic or creep range, depending on combined magnitude of the residual stresses and the mechanical properties of the parent material [7].
Residual stresses before welding may be caused by thermal or mechanical processes during materials manufacture or fabrication operations.

Effect of Oxygen Content on Thermoelectric Properties of Sintered Bi-Te Based Compounds D.
Effects of oxygen content on the thermoelectric properties of Bi2Te2.7Se0.3 compounds have been investigated.
On the other hand, Bi2Te3 thermoelectric semiconductor fabricated by powder metallurgy shows excellent mechanical property, but its thermoelectric properties are inferior to those of ingot, and are greatly affected by fabrication parameter.
It has been reported that those factors such as powder oxidization, the vaporization of component element 2) and point defect caused by plastic deformation change the carrier concentration of thermoelectric materials. 3, 4) In this study, we will examine the effect of H2 reduction on oxygen contents, and investigate the effect of oxygen on thermoelectric properties of sintered compounds by spark plasma sintering.
Thermoelectric properties and oxygen contents with various pulverizing conditions.

Take advantage form the residual mechanical properties of timber. 4.
After the realization of each groove the mechanical tests were repeated.
So, different parts of the same beam may partially act as separate parts, affecting the bending behavior of the whole beam; the MOE decreases can be assimilate to the one due to a cross-section modification.
Properties of timber.
II - Form factors of beams subjected to transverse loading only.