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Advanced engineering ceramics have been widely used in modern industry due to their excellent physical and chemical properties.
End electrical discharge milling and mechanical grinding compound machining method is employed to machine SiC ceramic in this paper.
Introduction Due to their excellent physical and chemical properties, advanced engineering ceramics are already being used in the aerospace, automotive, tool field, etc.
The hardness and strength of the workpiece are no longer the dominating factors that affect the tool wear and hinder the machining process.
To utilize the advantages of electrical discharge milling and mechanical grinding, the area of mechanical grinding should be the same as the area of electrical discharge milling, so the diameter of the abrasive stick, dm, should be the same as the diameter of the electrode, dd.

The tensile specimen was made by machine according to HB965-82, and the mechanical properties of tensile specimen were tested by the MTS.
This also can get another conclusion that the uniform dispersion of CNTs is one of the key factors in the increasing the mechanical properties of composite.
This also can infer that the dispersion and the binding between the CNTs and the matrix are the key factors to strengthen the composite materials.
Because CNTs are very tiny and have good mechanical properties, the tensile sample is broken according to the tough fracture mechanism during the tensile test.
b) Further research on the material microstructure, especially the interface properties of the matrix and the reinforced phase, and find out the relation between microstructure of materials and mechanical properties.

Research of Dynamics of the Precision Mechatronical Line Scale Gage Calibration System Artūras KILIKEVIČIUS Department of Mechanical Engineering, Vilnius Gediminas Technical University, J.
In the paper, the research on the influence of drive fixing place on dynamic properties of the precision mechatronical line scales gage calibration comparator is analyzed.
This can be achieved by analyzing the factors affecting reliability [6–10].
The research on the influence of drive fixing place to dynamic properties of the precision mechatronical line scales gage calibration comparator is analyzed in the paper.
The research on the influence of drive fixing place to dynamic properties of the precision mechatronical line scales gauge calibration comparator is analyzed in this part.

Catalytic properties of substances are improved, chemical reactions are accelerated, article resistance is raised due to application of significant mechanical energy at the processing speed of above 250 m/s in disintegrators [6], where special energy is stored, the structure of the substance is changed, materials are destroyed, the processes of phase separating are activated, the properties are changed.
The research results in the following consequences: - activation in the disintegrator with the outer leaching increases in the extraction of lead 1.4 times, in the extraction of zinc – 1.1 times; - leaching in the disintegrator as opposed to separate activation and leaching provides nearly the same extraction, but the period of the process drops from 15 60 minutes to the first seconds, that is by two times; - factors, affecting the process, listed in the descending order, are: concentration of reagent in leaching solution, the rotation frequency of disintegrator rotor, number of recycling cycles in the disintegrator.
Their structure is more uniform, this property influences positively on the quality of articles manufactured on their basis.
leaching products escape; Кт – coefficient of the escape range of leaching solutions; Кb – coefficient of the influence of bio-sphere; Кg – coefficient of pollution influence on the neighboring regions; К fd –coefficient of future danger; Кr – coefficient of the risk to damage the environment by non-registered factors.
The progress of this concept depends on the combination of mechanical activation and chemical leaching in the cycle.

Accordingly, the thumb rule is to avoid, or at least to minimize, the critical factors impeding the primary healing, i.e. the associated mechanical, thermal and vascular damage generated by bone drilling [1-4].
The reason of choosing bovine femoral bone for this in vitro study was based on thermal isotropic properties of bovine and human bones, and on homogeneity and constant thickness of bovine cortical bone as well [17].
Obviously in implant failure may be involved a combination of various factors and is rather difficult to find out the real etiology.
The large tool bit diameter is adversely affecting the bone tissue as is increasing the temperature during drilling process [19].
Tehemar, Factors affecting heat generation during implant site preparation: a review of biologic observations and future considerations, Int J Maxillofac Implants 14 (1999) 127-136

The Cu/Ta nanofilamentary wires containing N=853 Ta nanofilaments exhibit better mechanical properties than the Cu/Nb ones but not as encouraging as initially expected.
Mechanical properties of Cu/X nanocomposite conductors versus the conductor diameter d.
Nevertheless, Cu/Nb/Cu wires exhibit more encouraging mechanical properties (for example, compare b2 and c3 conductors).
The prevention of central bursts appears even more complex in composites materials since further factors, like the billet structure and material characteristics, increase the number of elaboration conditions leading to defects.
On the contrary, in Cu/Nb/Cu wires the co-cylindrical structure is kept and mechanical properties appear better than Cu/Ta ones, themselves better than Cu/Nb ones.

Chemical plants’ accidents resulted from multiple factors.
These factors can always form a kind of factor chain and they affect the disaster body in a cascading or parallel operation.
We should consider not only the condition of disaster-causing factors and their possibility, but also the disaster body’s four dimensions, such as exposure, sensibility, coping ability, resilience of the disaster body when it is faced with the synthetic action of the disaster-causing factors at the time of analysis.
We proceed from the four influential factors and four types of disaster bodies (Fig. 1).
It put forward 24 factors of disaster bodies’ vulnerability.

The mechanical properties have been well characterized by turbine engine OEM’s and the alloy has been specified for use as static components and blades in gas turbine engines.
Several authors have studied the mechanical properties, fatigue behavior, thermal stability, and microstructure of ATI 718Plus alloy [5 - 8].
These modified aging heat treatments that improved dwell-fatigue crack growth resistance had minor impact on static tensile properties at 704ºC.
Furthermore, it is clear that additional microstructural factors such as g¢ size and distribution and grain size are important in determining fatigue crack growth rate.
From an engine design perspective, these equivalent, and in some cases superior crack growth properties, present a significant advantage for ATI 718Plus alloy with respect to damage tolerance capabilities for critical rotating components.

Relation between microstructure, mechanical properties and residual stresses was carried out.
Relation between microstructure, mechanical properties and residual stresses was carried out.
The average grain size and some mechanical properties were evaluated in the weldments obtained.
Effect of the residual stresses on the mechanical properties.
Relation between microstructure, mechanical properties and residual stresses was carried out.

The shape is better, and the microstructure is circular and symmetrical pore, which is help to improve the mechanical property of quartz porous ceramics.
For most of these applications, the ceramic materials need to fulfill specific requirements regarding their microstructure, porosity, permeability and mechanical properties. [9].
To tailor the properties for each application it is necessary to control the factors affecting the sintering process such as the initial particle characteristics, the microstructure, the additives and the processing technique [10].
The shape is better, and the microstructure is circular and symmetrical pore, which is help to improve the mechanical property of quartz porous ceramics.
The shape is better, and the microstructure is circular and symmetrical pore, which is help to improve the mechanical property of quartz porous ceramics.