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Ultrafine-grained materials obtained by various techniques of SPD demonstrate unusual mechanical behavior and a number of unique properties often not achievable in coarse-grained materials [4-6].
Valiev, Nanostructuring of metals by severe plastic deformation for advanced properties, Nature Mater, 3 (2004) 511-516
Horita Microstructure and mechanical properties of pure Cu processed by high-pressure torsion.
Effect of high-rate deformation on the structure, the properties, and the thermal stability of copper alloyed with chromium and zirconium.
Structure, thermal stability and properties of grain boundaries of submicrocrystalline Mo obtained by severe plastic deformation.

Ultrasonic wave can use as a powerful tool for finding properties of microstructures [3, 4] but in welding, this method is used to determine location of internal and surface flaws in welded section, base metal or heat affected zone and measure their length and depth.
In ultrasonic NDT main parameters affect on the probe position are thickness, acoustic properties, couplant, probe types, welded joint geometry and beam index point.
With use of above factors the software can determine moving range according to confidence coverage all of the welding zones.
The main section of software consists of five submodules: 1- Thickness selection and entering angle probe properties 2- Material selection and couplant with ability to change of acoustic properties 3- V type weld geometrical parameters 4- Graphical and numerical outputs 5- Help guide Figure.5 Parts of PPDUT software.
Gur: Determination of properties of SiC Reinforced Aluminum metal matrix composites by Ultrasonic Techniques (Proceeding of 15th World Conference on Non-Destructive Testing, Rome, 2000)

The most important technical innovation is using of the corrugated webs substituting for flat webs, so the corrugation configurations have great influence on the mechanical property.
From the formulas above and theory analysis, the factors of hw, tw, hr, b and d have an appreciable impact on the shear capacity.
The factors of hr, b, and d are the targets of optimization.
At the same time, GJ13 showed up excellently plastic properties.
Conclusions On the basis of the mechanical property analysis of H-beams with corrugated webs, an optimization research on the corrugation configuration is conducted.

An advantage of these materials is that their structure and composition can be engineered to return properties required for specific applications and operations.
In this study, the mechanical and fracture properties of two grades of PCD have been determined at dynamic loading rates up to 5 m/s and elevated temperature up to 600°C in laboratory conditions using three point bending (TPB) and split-Hopkinson pressure bar apparatus (SHPB).
Having said that, the main aim for the manufacturers of the drilling bits is to understand the fracture process of these materials and try to improve their fracture properties.
Materials and Methods In this study, high temperature testing chambers, a laboratory scale three point bend test rig and a split-Hopkinson pressure bar apparatus have been designed and used for testing the fracture and mechanical properties of two different grades of PCD: G6 grade constituted of 6μm average grain size and G30 grade constituted of 30μm average grain size.
The stress intensity factor acting at the crack tip may be reduced due to these thermal stresses, thus causing microcracks and fracture to occur at lower load levels.

How to reasonably solve these elements is one difficult point in intelligent furniture and also one important factor of design innovation and knowledge property protection.
The rule of humanization includes 2 factors: physical and psychological, that is , the design cannot disobey this rule just for seeking function.
To strengthen the durability of intelligent furniture, we can borrow the design methods of mechanical and electronic products because the wearing of transmitting drive, the erosion of electronic circuit and circuit aging are the effective factors of furniture longevity.
Human factors in engineering and design.
Journal of Mechanical and Electrical Product Development and Innovation, Vol.21, No. 5(2008), p.28~30

The pulse velocity in a concrete depends on its density and its elastic properties.
Introduction Exposure of concrete to elevated temperature affects its mechanical and physical properties [1].
Concrete’s thermal properties are more complex than for most materials because not only is the concrete a composite material whose constituents have different properties, but its properties also depends on moisture and porosity.
Maximum Length Sequence with well-defined power spectra, crest factor of 1 and excellent autocorrelation property, make an ideal candidate for NDT.
Up to these temperatures, there is a decrease of concrete mechanical properties, but then there is the slight increase.

The influence of dry particle coating on the properties of coatings produced by d.c. arc plasma spraying is reported.
The key parameters affecting the mechanofusion process and the corresponding plasma spraying method have been varied in order to increase the hardness of the resulting composite coatings.
However, the combination of different materials helps to limit these effects and even more to increase the coating properties provided that the ceramic particles are uniformly distributed within the coating.
All composite powders are found to be nearly spherical with a mean shape factor of 1.05 (shape factor of 1.0 corresponding to the perfect sphere).
The microstructural characteristics of the coatings influence their hardness properties.

The tool wear affects tool life, dimensional accuracy and surface integrity of workpiece.
Although some reseaches have been conducted for the machining of sand molds in recent years, the main attentions were paid to casting properties of resin sand materials.
The workpiece material was resin sand mold material with a binder and curing agent, whose properties are presented in Table 1.
Properties of resin sand mold Particle(order) Resin(%) Curing agent(%) 24h tensile strength(Mpa) 40/70 0.15 0.3 0.614 Table 2.
Conclusions From the results discussed above, the following conclusions are arrived: 1) Hardness is the most important factor affecting tool wear.

No blistering was observed in heat affected zone samples for up to 24 hrs charging.
Development of hydrogen-induced cracking (HIC) has adverse effects on mechanical properties and service life of steels.
Simulations of coarse-grained heat affected zone (HAZ) and normalising of transfer bar (950°C, 20 minutes) were carried out using tubular furnace with either quenching or slow cooling, respectively.
Therefore, differences in grain size, volume fraction and types of the phases are considered to be the main factors determining the trend of residual hydrogen content.
Kim, Effect of environmental and metallurgical factors on hydrogen induced cracking of HSLA steels, Corros.

The following factors of influence on cohesive strength varied in conducting the numerical and real experiments in “foam concrete-reinforcement” system: 1. mechanical properties of reinforcement, type and parameters their embedment into foam concrete samples (Table 1); 2. mechanical properties of foam concrete depending on their density (Table 2).
Reinforcement element properties and parameters their embedment into foam concrete samples.
Foam concrete mechanical properties [13].
The set values during the numerical simulation were: loading conditions and the factors affecting reinforcement and concrete cohesion (Table 1, Table 2) which listed in paragraph 2.1.
Slavcheva, Mechanical properties of cement porous concrete at uniaxial compression with due regard for regularities of its creep Constr.