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There are many factors that affect selection of a casting process for producing a specific aluminum alloy part.
The most important factors for all casting processes are feasibility, cost factors and quality factors.
Quality factors are also important in the selection of a casting process.
When applied to castings, the term quality refers to both degree of soundness (freedom from porosity, cracking and surface imperfections) and levels of mechanical properties (strength and ductility).
As we can see from literature review the pouring temperature is one of parameter that may effect on mechanical properties and microstructure which will influence quality.

There are five factors affecting the degree of the equipment modularity are: (1) structure interaction; (2) force interaction; (3) signal interactive; (4) energy interaction; (5) material interaction.
A discrete or continuous membership function for different types of factors needs to be used to get a different membership degree.
In general, the larger the membership degree of these five factors is, the smaller the interaction between the parts is, and the higher the modular degree is.
According to the characteristics of the different equipment, five factors are given the different right values or are determined by the degree of membership.
AHP method can also establish a set of right value when more factors exist. 4.

These factors contain honing speed, reversing acceleration, oil-stone.
This paper studied the influence factors of reticulate pattern quality and honing efficiency.
The conclusion: in addition to consider such factors as honing machine power, rigidity of honing head and fixture ,the most important selection principle is that: according to different machining process, physical properties of oil-stone materials, the requests of circular degree and straightness ,oil-stone pressure can be selected reasonably.
Conclusions This paper studied the influence factors: honing speed, reciprocating reversing acceleration, oil-stone pressure and the physical properties of oil-stone, how to affect honing efficiency , It can draw three conclusions through the above analysis
[6] Baofu Zhou, Mechanical Manufacture, 2 (1998) p.17-18.

The microstructure and electrical properties of Cu films were investigated as a function of sputtering pressure by X-ray diffraction XRD and Hall effect method.
The electrical properties are also severely influenced by sputtering pressure, the resistivity of the porous Cu film is much larger than that fabricated on Si substrate.
Introduction At present, the electrical properties of Cu film were intensively researched.
The effect of application in electrical properties of thin film is not satisfactory.
Therefore, in order to fulfill the application requirements, electrical properties of porous Cu film still need to be studied on the long-term.

The need of vacuum chambers and restrictions in the manipulation of the EB gun is also factors which give problems in the industrialization of the process.
Mechanical properties of the parent plates, transverse to final rolling direction.
Weld metal mechanical properties of ESAB OK Tubrod 14.13 Rp0.2 (MPa) Rm (MPa) A5 (%) KV @ -20 °C (J) 530 580 26 120 Figure 1.
The resulting mechanical properties in the EB welded joints in both Steel A and B is very close to the parent plates.
Factors which affect the mechanical properties in the weld metal like solidification mode, solution hardening and dislocation pattern could not be examined in the light microscope.

The results demonstrate that the modified fiber with well-distributed of nano-silica has excellent mechanical properties, and crack resistance.
Introduction For fiber reinforced cementitious composites, the interface transfer the fiber-matrix stress, which is one key factor of determining the mechanical properties of composites,toughness and crack-resistance.
Nano-silica has been widely used in cementitious composites, which can promote hydration, shorten setting time, reduce porosity, improve microstructure and mechanical properties [4-15].
To evaluate the factors affecting the interfacial strength properties of plasitic FRM (≤6h after mixture ), single fiber pull-out tests were performed by using a modified special apparatus.
Nanomechanical properties of cementitious materials[D].

The mainly factors which affect composite material are temperature, humidity, ultraviolet radiation, oxygen, water, salt spray, chemical media, microorganisms.
Polymer matrix composites form, quality, mechanical properties and other indicators will change in synergy humidity and temperature, resulting to reduce the life and safety of composite materials [4~6].
Therefore, the mechanical properties of CF3011/BA9916-II composites showed a downward trend in the marine environment with the growing of aging time.
Combined 2.2 macroscopic mechanical test results, we can see that the aging of the composite material is the accumulation of microscopic damage to mentor their macroscopic mechanical properties decrease.
By inference, the composite moisture are directly related to the mechanical properties and the specific performance the mechanical properties of composite materials have different degrees of decline with the increasing of moisture. 3) In the marine environment, CF3011/BA9916-II composite carbon fiber and resin matrix bonding situation with aging time increases gradually deteriorated.

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.

It is well known that many factors such as the molar ratio of (-NCO)/(-OH), the content of DMPA, kinds of extender and catalyst, the type of neutralizing agent, synthetic methods, and reaction conditions strongly affect the structure-properties of WPU dispersions and their films[11-16], and there are lots of researches about the effects of WPU dispersions and their films.
Fig. 6 Tensile strength and elongation at break of WPU films with different content of DMPA Fig. 7 T-peel strength and Hardness of WPU with different content of DMPA Some mechanical properties.
The DMPA content is important for the mechanical properties of WPU emulsions and their films.
For that reason, it was predicted that the increase of DMPA content contributed to the improvement of mechanical properties.
Some mechanical properties increased with the increasing content of DMPA, such as tensile strength and hardness, etc. while some mechanical properties reduced, like elongation at break and T-peel strength.

This process, called creep, is affected by rheological properties of substances.
Delayed inelastic strain is explained by the viscous properties of concrete [1].
Factors as the influence of the environment, aging of concrete under load, impact dimensions of the elements, consistency of concrete, type of cement and gravel aggregates, temperature and concrete curing; affect the rate of creep to varying degrees and therefore they are relevant for the calculation of creep.
Here the factors affecting creep over time using coefficients have been considered.
In more precise calculations it is necessary to consider the factors influencing creep.