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Introduction Bulk nanocrystalline metallic materials have attracted considerable attention of researchers because of their unique mechanical properties as compared with coarse grained conventional materials.
Thus, the investigation of various loading conditions for better grain refinement and property control is of high importance.
Despite this interatomic potential cannot reproduce the properties of any particular material it was successfully used for the investigation of fcc polycrystals.
In spite of the fact, that in the real experiments such a high temperature will leads to the considerable grain growth, in atomistic simulation these two factors will be compensated and allow to produce qualitatively adequate results.
Hassani, Influence of twist extrusion process on microstructure and mechanical properties of 6063 aluminum alloy, Mater.

Reducing certain volumes of concrete from 30 to 50% will affect the performance of the slab structure in particular the flexural and shear capacity.
This approves that the lack of a sufficient curing process will subsequently affect the compressive strength of the concrete.
Table 2: Correction Factor for Cylinder Specimen as given in ASTM C39 L/D Factor 1.75 0.98 1.50 0.96 1.25 0.93 1.00 0.87 Table 3: The Overall Results of Compressive Strength Test Characteristic Specimen 1 & 3 Average Ultimate Strength (N/mm2) 28.145 Average Correction Factor of L/D 0.942 Corrected Ultimate Strength (N/mm2) 26.521 Area Loading Test This study carried out the uniform distributed area loading test to obtain the flexural strength of both reinforced conventional solid slab (SS) and bubble deck slab (BD).
Thus, it is very critical for designers and engineers to recognise the mechanical properties of the structural member before it is being used in construction.
The low concrete content in the bubble deck slab, 33.19% less when compared with the solid slab, influenced the elasticity properties of the slab.

All strengthening solutions proved effective at increasing this mechanical parameter, with magnification factors ranging between 1.9 and 4.7.
Mechanical properties of stones, reinforcing textiles and meshes, and connectors were taken from technical sheets or official testing certificates; their derivation is not discussed in this paper.
Material Properties Mean values of the compressive and tensile strengths of masonry and jacketing mortars are shown in Table 1, together with their coefficients of variation.
Table 1: Mortar mechanical properties.
Masonry PVA PBO NHL15 NHL10 CEM15 RW fmc fmt fmc fmt fmc fmt fmc fmt fmc fmt fmc fmt fmc fmt [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] [MPa] Mean 1.25 0.47 68.5 9.3 31.2 7.0 22.4 6.4 9.3 2.7 17.3 5.6 68.2 9.7 C.o.v. 27% 36% 13% 11% 18% 17% 9.4% 7.2% 7.0% 5.4% 4.3% 7.5% 4.8% 9.4% Table 2: Bare masonry mechanical properties.

Introduction As a substitute for nickel-based superalloys, TiAl-Nb alloys are potential candidates for new-generation aero-engine applications due to their low density, excellent high-temperature mechanical properties and good oxidation resistance [1,2,3].
Plasma arc is the only heat source during the PAM process, its activity affects the top surface temperature distribution and melting loss of alloying elements, and the structure and lateral surface quality of ingots, and even energy conservation.
The thermal physical properties of the Ti45Al8Nb alloy in the present calculations shown in Table 1.
Therefore, the maximum heat flux density can be changed from 1.4×106W/m2 to 4.2×106W/m2 with the power transfer efficiency is 0.4 and the power distribution factor is 0.8.
Mossi: Journal of the Brazilian Society of Mechanical Sciences and Engineering Vol. 27(2005), p. 399-406

Parameters Considered for Simulation The force exerted during the bending process depends upon the material properties, geometrical parameters and process parameters.
The material properties were kept as constant as per Table 1, for all roller configurations.
(b) Blank segment with dimension Table 1 Material properties considered for simulation Material Yield Strength (MPa) Strength Coefficient (K) (MPa) Strain hardening exponent (n) IS2062 E300 FE 440 300 695 0.207 For the cylindrical shell the plate may be of rectangular plate.
Table 2 Different levels of factors considered for simulation Levels Thickness (t) (mm) Inclination of top roller (α) Inclination of bottom Roller (β) 1 8 0º 0º 2 10 0.74º 1.86º 3 12 1.48º 3.71º Surface to surface contact were defined between the rigid and deformable body and coefficient of friction for each simulation is kept as 0.3.
Thus this equation so obtained could be used to determine the Fs and Fd for the range of t, β and α as per Table 2 and for given material properties

All of these factors pose significant challenges to the development of effective GPR for landmine detection.
An important factor in the detection of explosive materials in the soil is the properties of the soil itself.
The dependence of the probability of detecting an explosive material with the properties indicated above at a radiation frequency of 2 GHz is shown in Fig. 2.
The most common shapes of objects (cube, sphere, cylinder) have well-studied radiation properties that can vary depending on the dielectric constant of the soil [15].
Savchenko, Effect of Physical and Chemical Properties of Explosive Materials on the Conditions of their Use. 

According to the actual of mechanical product design and viewpoint of ontology six elements method, the ontology representation model supporting design knowledge is proposed
Ontology addresses the presentation of the abstract model of the objective existence, which includes two basic factors: concepts and the relationships among them.
This step is the key step with the biggest workload, which directly affect the quality of the ontologies.
Property rdf :ID=“paving capability”> Property> Fig.1 The ontology building lifecycle Fig.2 some kinds of sipform concrete paver conceptural design knowledge 3) Function knowledge class 1 1 4) Function technical principle solution calss The “object property” is used to depict an attribute of a class and express the relationships between two classes.

DC servo torque motor has advantages like fast response, low speed, large torque, coarse mechanical properties, as well as good linearity, it can be used in the case of low speed and even long-term work in the circumstance of plugging turn, and therefore it is suitable for 2D turntable control system.
Considerate factors refered above comprehensively, calculations of the continuous motor torque and speed was made in the paper according to the Eq. 1 and formula Eq. 2
Considered all the factors above, it chose IGBT as big power controlled switch tube in the paper.
In fact limit position so called is a kind of protection for motors; it is well known that once the program run out, then the motor will not be affected by the program, likely runs at a high speed.
Due to the mechanical structure’s limit, the limited range of motor rotation is from negative 90 degrees to positive 90 degrees, when the motor moves to the limited position, collision is unavoidable, thus we need design a kind of hardware limitation way to avoid accidents, that is, set two hall sensors at the position of negative 80 degrees and positive 80 degrees to sense limited switching signals.

Geomembrane material is a continuous, soft, thin impermeable material, compared with other impermeable material, impervious significant effect, the ability to adapt to deformation, light weight, and less transportation and less corrosion resistance can be strong convenient construction, short construction period, low construction cost, long service life The Choice of Composite Geomembrane Material Many different types of composite geomembrane material selected to meet the engineering requirements for the principle, that is, according to the size of the project, geological and hydrological conditions, construction, technical level and other factors to be taken into account.
Consider to inhibit weed growth factors, is generally used in a dark plastic film thickness 0.18 ~ 0.22mm, large channels are advised to use a thickness of 0.3 ~ 0.6mm, dark plastic film, The preferred polyethylene film, polyethylene film more than the PVC membrane to adapt to low temperature, in cold regions.
In recent years, the emergence of several new types of composite geomembrane material, the traditional physical and mechanical properties of the membrane material has been greatly improved New composite geosynthetics GCL (Geo-synthetic Clay,, Liner,) is evolved on the basis of the compaction of clay liners CCL (Compacted Clay Liner).
Channel bottom width and catchy wide edge release, pay attention to the construction of reserve about 30cm of the soil for manual excavation and clear base, to avoid mechanical Excavation Drainage base of undisturbed soil.
The construction of the protective layer directly affect its stability and channel seepage control, and protective layer materials can be selected earth material can also be used to rigid materials.

Novel Straight Type Aortic Cannula with Spiral Flow Inducing Design NOFRIZALIDRIS DARLIS1,a, NADIA SHAIRA SHAFII2,b, JESWANT DILLON3,c, KAHAR OSMAN1,2,d, AHMAD ZAHRAN MD KHUDZARI2,e 1Faculty of Mechanical Engineering, 2IJN – UTM Cardiovascular Engineering Center, Faculty of Biosciences and Medical Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, MALAYSIA 3Institut Jantung Negara (IJN), Kuala Lumpur, Malaysia anofrizalidris@yahoo.com, bnaddyshaira@yahoo.com, cjeswant@ijn.com.my, dkahar@fkm.utm.com.my ezahran@biomedical.utm.my Keywords: Spiral flow, aortic cannula design, arterial cannulation, cardiopulmonary bypass, computational fluid dynamics.
Aortic cannula is one of major factors leading to adverse events such as thrombosis and atherosclerosis development during open heart surgery, due to oxygenated blood outflow with high velocity jet from heart lung machine (HLM) when exiting the cannula tip into the ascending aorta.
Numerous study have been done to improve the aortic cannula and minimize flow complication on these design factors cannula length effect [4], cannula tip modification (multiple stream and dispersed stream [5,6]; and recently the design was directed to inducing spiral flow [7].
Blood is considered as a Newtonian and incompressible flow with constant hemodynamic properties (ρ = 1050 kg/m3, µ = 0.00345 N.s/m2) was employed and no-slip boundary condition were enforced at the vessel wall.
Pressure drop from cannula inlet centre point to outlet centre point, pressure contour, velocity streamlines and wall shear stress (WSS) were also used as results outputs to delineate the flow behaviour of each cannula designs affected by the number of groove.