Search results

Incidence can significantly affect turbine cascade aerodynamic losses, including profile, secondary and tip-clearance losses.
Determination of the Incidence Correction Factor.
(2) Turbine disk inclinations could undermine the profile-loss-related aerodynamic properties of a turbine cascade and the whole system as well.
Therefore, it is suggested that turbine disk inclination should be taken as an influential factor in the design and manufacturing process of a turbine system
Proceedings Institution of Mechanical Engineers, 1971, 185(32): 407-424

Applications of magnetic fields in metallurgical recrystallization processes have gleaned recent attention for their ability to control microstructure and improve properties.
Such research provides the initial steps in establishing patterns and characteristic trends for the controlled application of pulsed magnetic fields to produce specific microstructural properties in metallic materials, a potentially commercially viable process.
Conversely, Martikainen and Lindroos [8] demonstrated that 1.5 T steady magnetic annealing retarded ferrite recrystallization by affecting magnetic ordering.
Cumulatively, previous work suggests that steady magnetic annealing exerts an effect on grain size that can be predicted by the balance of two factors: the grain growth retardation effect and the boundary motion acceleration effect.
Previous research has established that texture formation during recrystallization and grain growth are affected by the magnetic field properties, including intensity [8, 11, 14].

Polyethylene films are mostly used to cover the soil in order to improve soil function quality and to maintain microclimatic environment during cultivation especially in seasonal areas where weather factors are changing dramatically over the year.
The abandonement of conventional polyethylene bags on the field can cause soil infertility thus affected the newly replanted seedlings and agitation of new root developments.
It is shown that polypropylene degradation can be induced with UV radiation [6] thus the same mechanism could be provoked in polyethylene based plastics due to their similarities in structural properties.
RM master batch is suitable for blow extrusion with wide range of properties in terms of process ability and mechanical properties [6].
Dey., Structural and thermal properties of HDPE/n-AlN polymer nanocomposites, J Therm Anal Calorim, 118 (2014) 1513–1530.

The coiling temperature substantially affects the internal microstructure and magnetite phase.
Introduction Metallic oxide (scale) formed on the strip surface is a significant disturbance factor during hot rolling.
Correspondingly, the microstructure of the oxide scale is also affected by processing parameters, such as finishing and coiling temperatures, cooling rate, and cooling conditions under which the coils are stored.
Test coiling temperature was varied in the range of 540, 550, 560 and 570°C in a real hot rolling line to obtain different types of tertiary scales in terms of properties of the testing material [12].
They may affect the growth and distribution of magnetite and hematite layers, even the ions diffusion mechanism through the corresponding layers.

It was mainly formed by the landslide accumulation, accumulation of residual slope, slope collapse accumulation, accumulation of red flood formation, usually developing in the loose accumulation layer of Quaternary system [1].While it often brings serious harm to the national economy, people's normal life as well as safety and huge property losses for its larger scale, many affect factors, strong in sudden instability and complex slip conditions.
Geology and Mechanical Parameters of the Engineering The certain slope is Soil-rock mixture slope of Quaternary system, its maximum elevation is 120m and angle is 40°, most of the slope field is Soil-rock mixture slope which is mainly composed of Quaternary system accumulation, the slope was divided into upper, middle and lower layer, the upper and middle layer is Soil-rock mixture slope which is mainly composed of Quaternary system accumulation, the lower basetone layer is mainly composed of sandstone.
Physical and mechanical properties of all soil layers is following: Table.1 Physical and mechanical parameters of rock and soil lithology bulk modulus () Shear modulus () bulk density () cohesion () internal friction angle () S-RMS 1 6.48e7 2.32e7 20.5 1.9e4 36 S-RMS 2 7.8e7 2.41e7 22 1.95e4 37 Baserock (sandstone) 12.1e9 9.05e9 24.5 2.1e5 40 Numerical Simulation The boundary effects is taken into consider when Modeling, the model size is shown in Figure 1, the slope height is 60m, the horizontal distance is 68.25m, the calculation of the horizontal range is 243m, the calculate depth is 120m.

The suggestions of improving properties of servo drives with elastic gears on the whole concern introduction of various corrective and compensative links which are not always efficient in practice due to the influence of nonlinearity of the type “dead zone” which describes the backlash.
Accuracy depends on several factors.
For instance, in case of milling with end mill the following relation can be used , (2) where, – proportional coefficient, which takes into account material properties of the machined workpiece and the tool, diameter , number of teeth and rotation frequency ; – exponent indexes.
The form of the matrix of the controllers significantly affects the matrix of the system dynamic stiffness .
In order to improve the dynamic properties of such robots it is feasible to apply impedance control, which can be realized by introducing corrective control loops of the manipulator links velocity.

Damage Identification by Embedded Piezoceramic Sensors In the Composite Plate Heoung-Jae Chun 1, a, Choong-Hee Yi 2, b, Joon-Hyung Byun 3, c 1 School of Mechanical Engineering, Yonsei University 134, Shinchon-dong, Seodaemun-gu, Seoul, 120-749, Korea 2 School of Mechanical Engineering, Yonsei University 134, Shinchon-dong, Seodaemun-gu, Seoul, 120-749, Korea 3Korea Institute of Machinery and Materials 66, Sangnam-Dong, Changwon, Kyungnam, 641-010, Korea a hjchun@yonsie.ac.kr, bsephirot@yonsei.ac.kr , cbjh1673@kmail.kimm.re.kr Keywords: Embedded piezoceramic sensor, damage detection, Lamb Abstract.
The embedded structural health monitoring system is envisioned to be an important factor of future structural systems.
The vibration patterns and dispersive properties through thickness are not identical for each mode.
It shows the present of delamination or impact damage strongly affects the Lamb wave propagation.

Overall, the process parameters of the deposition methods, powder concentration in the coating, pre/post surface treatments, and the fluid medium are the most influential factors affecting surface wettability and its response to the biological environment.
Biomaterials for orthopedic applications and techniques to improve corrosion resistance and mechanical properties for magnesium alloy: a review.
Evaluation of modified 316L surface properties through HAp suspended EDM process for biomedical application.
The effect of patterned titanium substrates on the properties of silver-doped hydroxyapatite coatings.
Mechano-tribological properties and in vitro bioactivity of biphasic calcium phosphate coating on Ti-6Al-4V.

Each of these factors and all together are decision makers and, based on an established standard might transform a discontinuity in a defect.
They can cause stress concentrations and can affect the structural integrity and reduce the strength of the weld (Fig. 4).
Effects of heat treatments on mechanical strength of laser-welded equi-atomic AuCu-6at%Ga alloy.
Mechanical strength of laser-welded cobalt-chromium alloy.
Mechanical properties of laser-welded cast titanium joints under different conditions.

The template wetting method utilizing the decomposition of silver acetate can be applied to produce a silver nanostructured material with high functional properties.
Introduction Nanowires have attracted considerable interest since they have a high specific surface area and anisotropic, which affects their electronic, photonic, mechanical and chemical properties.
The kinetics of decomposition reaction of silver acetate can be described by the equation (1): (1) where a is the degree of conversion, t is the time, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant.
The template wetting method utilizing the decomposition of silver acetate can be applied to produce a silver nanostructured material with high functional properties.