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However, as is well known, welded joints can exhibit poor fatigue properties.
The heat of friction and plastic flow from the rotating tool produce significant microstructural changes, which lead to a local variation in the mechanical properties of the weld.
This paper determines fatigue properties of FSW of the Al5083-O alloy with FSW condition with tool rotation: 500 rpm-100 mm/min, 800 rpm-100 mm/min and 800 rpm-200 mm/min, including fatigue life and fatigue characteristic values.
We conducted tensile test and fatigue test to study the factor of fatigue strength of Al5083-O alloy FSW joints.
References [1] Caizhi Zhou, Xinqi Yang and Gouhong Luan: Fatigue properties of friction stir welds in Al 5083 alloy.

The favorable mechanical properties and compromise between toughness and hardness can be obtained with optimal technology, appropriate heat input and the cooling rate in the temperature range from 600° C to 200° C.
Cooling rate in this temperature range, determine the microstructure formed in the HAZ, and therefore the mechanical properties.
Pass The temperature of the preheating / inter-pass Cooling time t8/5 Cooling time t6/2 The average cooling rate [800° C - 500° C] number [°C] [s] [s] [°C/s] 1 150 24 219 13 2 160 68 263 5 3 160 25 220 12 4 160 26 223 12 Testing of tensile properties was performed to determine the mechanical properties of welded joints.
The test results of tensile properties are given in Table 4.
Madhusudhan Reddy, Effect of welding process consumables on tensile and impact properties of High Strength Quenched and Tempered steel Joints.

The turbocharger in the application affecting the normal work of the diesel engine, or even cause the machine broken fault for multiple failures including floating bearing burning loss, rotor carbon deposition firmly dying leading to be fixed (oil seal leaking) and nozzle ring thermal fatigue cracking, deformation of the blade, etc..
Besides unbalance interior pressures of intensifier, the reason for the oil leak relates to appropriate engine oil quantity of seal structure design, oil return unobstructed and other factors. 1.1 Typical structure of turbocharger oil seal and its problems The specific type of diesel engine turbocharger oil seal structure can be divided into two categories of contact and non-contact type according to their function.
As far as possible to keep the oil return chamber pressure stability and reduce the oil return chamber pressure, which is the advantageous factors preventing oil seal leak.
At the same time, the reliability of the oil return threads at high speed and good dynamic sealing property improve the sealing effect of the oil seal structure and reliability.
Beijing: Mechanical Industry Press, 2008 [3] Zhu Yong, Liu Demin.

The phase transformation in this process involves the material heat transfer which is strongly affected by the material sintering phenomena.
Introduction The cost and associated time of producing one or few mechanical components is often very high relative to those for manufacturing high-volume of the same items where automation is employed.
At low-temperature, only the phenomenon of convection affects the heat conductivity.
The material physical properties, laser properties and the initial conditions are reported in table 1: Table 1: Initial conditions and material constants Initial conditions: Initial bed temperature )K(T0 ° 398 Initial density )m/kg( 3 0ρ 660 Initial solid fraction )1( 0ε− 0.55 Material constants: Full dense solid material )m/kg( 3 sρ 1,200 Convection coefficient )Kms/J(h 2 ⋅⋅ 25 Activation energy )mol/J(E 51.745 10× Surface emissivity of the material Rε 0.8 Average diameter of powder )m(Dp 630 10−× Laser beam radius )m(r0 0.0012 Regarding the finite element model, for simplicity we choose a cubic specimen with dimensions of0.024 0.003 0.0005 m m m × × .
Tontowi: Proceedings of the Institution of Mechanical Engineers Vol. 213B (1999), p. 333

Electrochemical properties were tested at constant current with 200mA/g.
Additionally, each a structural change is directly reflected on electrochemical properties of Si electrodes.
Eventually, electrochemical properties of Si electrode have become poor as shown in Fig. 2(c).
Conclusions We investigated influence of the polymer content on electrochemical properties of Si electrode.
As results of electrochemical properties, cycle performance was showed poor due to their low conductivity and weak bonding.

The results showed that the better blanked edge quality, the less magnetic properties deterioration.
It indicated that punch-die clearance is the most important factor affects the blanked edge quality.
Roth, Influence of the cutting process on the magnetic properties of non-oriented electrical steels.
Lowther, Effect of Shear Cutting on Microstructure and Magnetic Properties of Non-Oriented Electrical Steel.
Riehemann, Influence of Punching and Tool Wear on the Magnetic Properties of Nonoriented Electrical Steel.

TIG or laser, determine quite weak joints due to a strong increase of the average grain size observed in the melted material and to quite large thermally affected zones.
Then a simple heat affected zone (HAZ, C) is reached, in which material has undergone a thermal cycle which has modified the microstructure and the mechanical properties.
In this way, this zone is a thermomechanically affected one (TMAZ, B).
It should be observed that the peculiarities of the obtained microstructures strongly determine the joint effectiveness and its mechanical behavior.
It should be observed that maintaining good mechanical properties with high processing speed is always a desirable effect for a process that is likely to be used in industrial applications where the production time is a key factor; in fact the additional time required for the tool path completion is small if compared to the total processing time (basically due to clamping and sinking), and it's counterbalanced both by the elimination of the dwelling time, in which the tool stays in the sheets before being retracted, and by the relatively high advancing velocity reachable.

In the space, it is easy to introduce various forms of interference and noise, affect the reliability of power supply directly, thereby affecting the OCO's technical performance.
The shell temperature must be strictly limited within the expected temperature.It is generally recommended that range from 30% to 70% of the rated power is appropriate (specific ratio of the size and other factors), DC/DC module has a good performance and adequate reliable in this range.
Circuit design should take reasonable ground design as well as additional filters to meet the requirements of noise conduction.A chassis with good electrical properties can reduce electromagnetic radiation, the intensity of the electromagnetic interference can be attenuated to the original one percent to more than one millionth usually [7] .
First determine the circuit allows maximum rated current, select the the corresponding derating factor, and then, depending on the type of fuse, rated current value multiplied by the derating factor S is not less than the maximum rated operating current, and then according to the selected fuse Specifications table, choose a slightly larger than the current specifications.
Beijing: Mechanical Industry Press, 1998

The properties of the scaffolds are dictated concurrently by a number of factors such as kinetics of cell growth, mechanical stresses at the site of implant, the cell–material interactions, and perhaps most importantly, controlled scaffold degradation.
Due to the mechanical, biological and chemical properties of synthetic polymers, such blends can be adequately designed to mimic human tissue.
Physical and Mechanical Properties of Blends Based on Poly (dl-lactide), Poly (l-lactide-glycolide) and Poly (ϵ-caprolactone).
Influence of Plasticizers and Drugs on the Physical-Mechanical Properties of Hydroxypropylcellulose Films Prepared by Hot Melt Extrusion.
Effect of molecular weight on the thermal properties of polycarbonates.

This paper studied the CO2 sequestration effect and the mechanical properties of the pure cement, the pure steel slag, and the cement based composite cementitious materials containing steel slag.
And, CO2 is the primary compound in the automobile exhaust, accounting for 12%-15% of it, and it is the main factor to cause global warming.
On this basis, the mechanical properties was tested.
All these made the CO2 sequestration property of cement can not be realized in the maximal degree.
(b) The porosity affects CO2 sequestration property.