Search results

The exacerbation of pure water scarcity, deterioration of ecological situation and contaminated water are adversely affecting human health [1, 2].
PEG addition facilitated in CA film formation by enhancing its thermodynamic characteristics and affecting its kinetics during phase inversion mechanism [37, 38].
Part 1: Studying the mechanical properties of polyurethane/Cr2O3 nanocomposites, Progress in Organic Coatings 77(11) (2014) 1663-1673
Zhang, Effects of flower-like ZnO nanowhiskers on the mechanical, thermal and antibacterial properties of waterborne polyurethane, Polymer Degradation and Stability 94(7) (2009) 1103-1109
Al-Mutairi, Improved salt rejection, hydrophilicity and mechanical properties of novel thermoplastic polymer/chitosan nanofibre membranes, Journal of Engineered Fibers and Fabrics 15 (2020) 1558925020923174

Forming conditions such as material properties, friction and lubrication, cooling effect, punch speed, and the initial temperature of die and workpiece, etc., which affect to filling capacity and forgeability, are needed to be carefully reviewed [2,3].
Parameters Die Workpiece Materials Friction factor Initial temperature (◦C) Punch speed [mm/s] Heat capacity (N/mm2/K ) Conductivity coefficient (N/s/K) Heat transfer coefficient to the environment (N/s/mm/K) Mesh number H13 0.2 200 Variant 3.676 28.4 ─ 6000 6061 ─ Variant ─ 2.8 240 0.007 4000 Table 1 Input data for finite element analysis [4] Results and discussion Influence of forming temperature.
Kobayashi: International Journal of Mechanical Sciences.
Kobayashi: International Journal of Mechanical Sciences.

It is not affected by total salinity in injection water.
In 1968, an investigation of factors influencing ball sealer performance presented guidelines on how to apply ball sealers for optimum seating efficiency [11].
Li X. and Chen Z. [18] presented an integrated transport model, describing the relationships among the ball sealer transport sealing behavior, wellbore deviation, wall effect, perforation density and size, fluid properties, and pumping rate.
The factors affecting the blocking effect are analyzed.
Factors influencing optimum ball sealer performance.

There are two primary environmental factors that affect the design of subsea X-tree system: the high external and internal pressure, extremely cold temperatures of the deep-sea environment and high product temperature.
The severity of accidents should be evaluated at least from five aspects: Harm to workers and the public; Damage to environment; Loss of property; Business interruption; Loss of reputation.
Both the X-tree control system and the X-tree mechanical system have exhibited remarkable reliability.
However, the reliability analysis work becomes complex refers to the mechanical and seal systems.
The ability to detect problems remotely is a critical factor in the implementation while the direct observation is no possible.

Mechanical properties of furnace tubes are also degraded after a long time service.
Moreover, creep voids and microcrack have emerged as mechanical properties of the material degrading.
It won’t be discussed here. 3.3 Mechanical properties degradation As is discussed above, the main changes of tube after high-temperature service are evolution of precipitated phases and zone partition of the tube’s inner-wall.
These microstructure changes can cause serious degradation on tube’s mechanical properties, and creep voids has already emerged in sample C, as is showed in Fig.1c and Fig.4c.
High temperature service heavily affected mechanical properties of the tubes.

SMCs as core material for electric machines feature good mechanical properties, improved 3D-flux carrying capabilities and isotropic magnetic properties (thus simplified and flexible design of magnetic circuits), low cost and possibility of easy recycling.
Magnetic properties of soft magnetic composites and parts made of them depend on a number of factors.
Bertotti, General properties of power losses in soft magnetic materials, IEEE Trans.
Melkebeek, Magnetic properties and loss separation in iron powder soft magnetic composite materials, J.
Fáberova, Wide frequency range AC magnetic properties of Fe-based composite materials, Acta Phys.

Yahya1,a and Martin Halaj2,b 1Faculty of Mechanical Engineering, Slovak University of Technology in Bratislava, Slovakia 2Slovak Institute of Metrology, Section of Research and Quality Management, Slovakia a e-mail: Adel_ecc@yahoo.com, be-mail: halaj@smu.gov.sk Keywords: Capability indexes, Accuracy, Machine capability, CMM, Monitoring process.
The indices differ by calculation method, properties as well as by intended use.
A machine capability value gives information of a machine tool’s ability to produce certain product characteristics with no effect from the environment and changes in time; e.g. temperature changes and tool wear In order to minimize and hopefully even eliminate all affecting parameters the machine capability study is performed during a short period of time.
It provides information about the total width of the distribution in proportion to the tolerance with the factor Cm must be ≥ 1.67.

Differences in the mechanical properties appear between weld metals, heat affected zone, and base metal.
Crack growth resistance curves, e.g., determined in terms of crack tip opening displacement (CTOD), exhibit variations in the crack growth resistance of the welded joint as a consequence of the local variations in the material properties.
Theoretical investigations have shown that also the local near-tip crack driving force (CDF) may deviate strongly from the far-field CDF, if the material properties vary locally.
The chemical compositions and mechanical properties of the BM and the OM and UM weld metals are given in Tabs. 1 and 2.
The strength mis-match factors M, i.e., the ratio between the yield stress of the weld metal to the yield stress of the BM, are 0.86 for the under- and 1.19 for the over-matched welded joint.

Vehicle accident often caused serious loss of life and property once vehicle rollover accident occurred.
This brings great security risk to life and property security [1].
Vehicle performance did not meet safety standards is a very important reason for vehicle accidents, coupling with human and environmental factors [2].
(2) Where, and are lateral force of front and rear wheel axles, and are distances of front and rear wheel axles from the center of gravity, is suspension roll stiffness, is suspension equivalent friction factors.
In fact, yaw rate and roll angle response are affected by the changes of height of center of mass.

Radar level meter is also used for steam, mist, dust, volatile solvents and gases produce a variety of inert gas, of radar level measurement are not affected.
And most of the bulk material is much less than the diameter of 50mm, this is the current 25GHz radar is to measure bulk material properties of the best reasons for the choices.
Ultrasound is one of the categories are sound, are mechanical waves, the frequency range is higher than 20KHz is called ultrasonic sound waves.
Ash silo in central China power Junliangcheng use RF admittance meter, limited because of working conditions, affected by temperature, pressure, dielectric constant, the larger dust and other factors, RF admittance level meter materials and other issues often linked to the impact, the output signal to the instrument error caused by volatile, not ideal, discovery data drift serious, even appears in the display "dead"data phenomenon.
Radar level measuring device with good results in this, it reduces the labor intensity, avoid the influence of human factors, and the device reflects the timely, accurate measurement, to the production management provides the basis of accurate data.