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In addition, an important factor that can hinder the use of laser shaping is the limited technological capabilities of the equipment.
Analysis of Publications The analysis of the factors [2] of the laser shaping process shows that the most influential of them are the following: the laser radiation power, the speed of movement of the laser beam, the size of the focusing zone, the thickness of the processed sample and the properties of the processed material.
The properties of the processed material are initial conditions, so we can change them only before the formation, for example, thermal, mechanical or other types of processing.
The choice of this steel is made in order to avoid influencing the results of formation of the mechanism of polymorphic transformations and, in general, structural changes in the processed material, which can significantly affect the formation results [8, 9].
A decrease in pitch between irradiated tracks leads to a decrease in the radius of curvature of the developed surface, while keeping all other factors stable.

Improved strength properties were obtained by using hydrothermal curing conditions and super-plasticizer addition.
The properties of the rock chips were tested according to ASTM C136 and the results are presented in Table 2 and Table 3.
Under the three curing methods, the main influencing factors of the total shrinkage were relative to hydration, the drying shrinkage of hardened cement pastes and moisture loss or migration.
The three factors corporately played roles on the shrinkage of the blocks under the curing method B.
Effect of silica fume and expanded perlite addition on the technical properties of the fly ash–lime–gypsum mixture [J].

Those substituted ABO3 based materials have shown possessed microwave absorption properties discussed in the frequency range of 2- 18 GHz.
The magnetic properties were evaluated using an Oxford Instrument Vibrating Sample Magnetometer (VSM).
The quality factors of fitting, R (criteria of fit) and χ2 (goodness of fit) were considered acceptable.
As to microwave properties the LBFMTO_nano has indicated certain microwave absorbing properties in the frequency range of 9- 15 GHz, whose value of the absorbing peaks are -9 dB at 9.9 GHz; -11.5 dB at 12.0 GHz and -25 dB at 14.1 GHz.
Gao, Microwave absorbing properties of La0.8 Ba0.2Mn0.3 nano-particles, Trans.

Taking advantage of optical fibers’ properties and behavior, such as easy interaction with other materials, small size, low weight, corrosion resistance, geometrical flexibility and an inherent immunity to electromagnetic interference, there is potential in adopting the Fiber Optic Sensors (FOS) for structural health monitoring systems.
The equation basically consists of the physical parameters, which affect the change of state of both the host specimen and the optical fibers.
In summary, the sensor equation has integrated parameters such as stress intensity factor, host specimen geometry, optical fiber gauge length, strain and diameter, and they were experimentally validated.
The set up consists of mechanical equipments for crack formation under tension of the specimen and devices for the optical measurements.
Fig. 3 CPDS set up during the mechanical deformation test.

Gas pressure error.Currently, most scholars generally believe that coal and gas outburst is the result of synthetic action of situ stress, gas pressure and the mechanical properties of coal, and it is also high-speed release of a great deal of latent energy accumulated in surrounding rock and coal.
However, the following influencing factors will all affect the final manometry results in the process of on-site manometry: ⑴ Objective factors ① Well location: manometry drilling is arranged around the open-type structural belt in unknown faults, fissures, aquifers, caves and other conditions.
Gas can not be connected to pressure gauge, and gas pressure can not be accurately measured if pressure hole or piezometer tube is clogged. ③ Mining-induced or unloaded pressure influence: the measured pressure is clearly not the original gas pressure if pressure measurement points are arranged in the mining-induced or unloaded pressure belt of other coal seams. ④ Other factors: roadway layout constraints, continuous pressure measurement time and other factors also have some impact on manometry results. ⑵ Subjective factors: some mining units take an uncooperative attitude in order to avoid their mines being identified as coal and gas outburst mines and reduce the cost of investment in safety so that it is difficult to carry out site work.
Thus, the quality of identification is affected.
There is no clear explanation on which factors play a leading role as well as the interrelations among various factors during the outburst process, so a unified complete quantitative theoretical system can be not formed.

Shi Mechanical Engineering Department, Zhongyuan Institute of Technology, 450007, China Keywords: CBN grinding wheel, Spindle pivot, Emery wheel dressing Abstract.
The dust and the off-flavor produced by the resin corundum wheel during grinding affect the health of the operating-workers.
The grinding quality is affected by the property of the abrasive directly.
Considering such factors as the material of work piece, abrasive, particle size and grinding method synthetically, the 100% density is adopted, and the hardness of the wheel is between J and K (softness 3 to medium).
Fig.2 CBN grinding wheel Journal Title and Volume Number (to be inserted by the publisher) 309 The Dressing Method of the CBN Wheels During grinding of the CBN wheel, the abrasive particle in the working surface will gradually become blunt because of the influence factors, such as, the grinding force, the high temperature and the cementation in the grinding area, and at the same time, the original geometrical sizes of the wheel’s working surface may not be kept owing to the non-uniform wearing.

This is attributed to the fact that the CEB-FIP 1999 model assumes that autogenous shrinkage is largely dependent on compressive strength, and that the Jonasson and Hedlund model only considers W/B as the primary influencing factor for autogenous shrinkage.
In order to improve the prediction accuracy, the cement type factor γ of Tazawa and Miyazawa prediction model was modified by applying the test data to the prediction model.
Fig. 2 – Comparison of measured and predicted autogenous shrinkage from original and modified Tazawa and Miyazawa models at various days (1, 7, 14, 28, and 56 days) Conclusions Based on the test results of the experimental program and the comparisons among three autogenous shrinkage prediction models, the following conclusions can be drawn for SCC proportioned for precast, prestressed structural applications: l Autogenous shrinkage is highly affected by w/cm and binder content.
l The Tazawa and Miyazawa 1997 model with suggested modification for a cement factor can be used to estimate autogenous shrinkage of SCC designated for precast, prestressed structural applications.
J., Khayat, K.H., “Statistical Models to Predict Mechanical and Visco-Elastic Properties of SCC”, Proceedings of the 2nd International Symposium on Design, Performance and Use of Self-Consolidating Concrete, Beijing, China, June 5-7, pp 506-525, 2009

., Evropská 864, Brno 664 42, Czech Republic,**Brno University of technology, Faculty of Mechanical Engineering, Technická 2 Brno, Czech Republic *martin.nesvadba@danahermotion.com, **singule@fme.vutbr.cz Keywords: insulation system, life time, bus voltage, dv/dt ratio, peak voltage Abstract: The target of this paper is to evaluate influence of increased bus voltage of power converter on motor insulation system.
Therefore use of the extrapolations should be considered for relative thermal comparisons, not exact life performance, since many other factors impact exact winding life.
It is important to keep the motor temperature at the same level and perform periodical measurement of all key factors.
Both of these parameters affect the lifetime of insulation system and should be kept in focus for evaluation of results Acknowledgement The research has been supported by MSM0021630518 "Simulation Modeling of Mechatronic Systems".
Eichhorn: Engineering Dielectrics, Volume IIA, Electrical Properties of Solid Insulating Materials: Molecular Structure and Electrical Behavior, ASTM Special Technical Publication 783

On the other hand, the porosity of rock is another main factor of rock breakage with high pressure cavitating water jets.
In this paper, influencing factors of rock-breaking performance under high-pressure cavitating water jets are simplified as two aspects: the properties of rock itself and the parameter conditions of cavitating water jets.
(4) Besides erosion conditions (pump pressure, confining pressure, erosion time) that affect rock breaking under high-pressure cavitating water jets, rock properties are important factors as well.
The Japan Society of Mechanical Engineers International Journal Vol. 38-1 (1995), p.31-37 [5] Soyama H,Tokumitsu K,Nishida M.
Chinese Journal of Mechanical Engineering Vol. 33-3 (1997), p. 44-47 (In Chinese) [10] Wenying XIANG, Xiaohong LI and Yiyu LU.

Single-Loop SVPWM Modulate Strategy for Permanent Magnet Synchronous Motor Control System Qixun ZHOU1, a, Yong ZHOU2,b and Yufeng ZHANG3,c 1 Department of Electrical & Control Engineering, Xi’an University of Science and Technology, China 2 School of Aeronautics, Northwestern Polytechnical University, Xi’an, China 3 School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an, China a zhouqixun029@163.com, byongstar@nwpu.edu.cn, c xkdzhangyufeng@qq.com Keywords: Permanent Magnet Synchronous Motor, Sine Pulse Width Modulation, Field Oriented Control, Single Loop, Space Vector Pulse Width Modulation.
Introduction The permanent magnet synchronous motor (PMSM) is widely applied in flexible manufacturing system, robot, office automation, office automation, numerical control machine and aeronautics and astronautics and other fields[1,2] with its such advantages as simple structure, small size, light weight, high power, high power factor, rotor free from heating problem, high overload capacity, small rotational inertia and small torque ripple and so on.
The PWM algorithm is simple, but the motor torque ripple is large, the winding availability is low and it is difficult to realize super-low speed operation; SPWM algorithm is easy to realize and the torque ripple is small and it may realize low speed smooth operation, but the SPWM starts from the angle of power and is pursuit of output of a three-phase symmetrical sine wave power supply of adjustable frequency and voltage, so the voltage utilization in PMSM system is low and the motor mechanical property is soft; FOC starts from the angle of motor and its objective is to make the motor generate the circular magnetic field and the flux linkage locus in motor gas-gap is close to round shape so as to reduce the torque ripple and core loss, but the control algorithm is complex and it needs to sample the motor real-time winding current and the hardware circuit is complex and the current noise is increased and the phase shift caused by filtering by use of hardware or software obviously affect
The test proves that the method has a higher system mechanical property when compared with SPWM drive and the control performance is close to that of the traditional FOC.
The stator phase current wave form has a good sine property, as shown in Fig. 5.