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While there are many factors affecting forming accuracy including powder’s physical and chemical properties (powder particle size, composition, and fluidity), laser and machine tools’ characteristics (laser power, scan spacing, scan speed, sinter thickness, and the preheating temperature).
Analysis of the influncing factors for the parts’ precision and desity Laser sintering is a thermal process which uses laser to heat materials, so sintering temperature is one of the main factors affecting the accuracy of SLS parts.
A better thickness should be selected according to the materials’ particular size, thermal properties and etc.
When the scanning speed increases, the error may continually decline; this will be opposite to the affecting trend of laser power on the parts’ properties.
There are many factors affecting the density and accuracy of laser sintered parts.

This paper provides a probabilistic approach to predict the time-evolution of the mechanical and geometrical properties of a reinforced concrete structural element (i.e., bridge pier) subjected to corrosion-induced deterioration, due to diffusive attack of chlorides, in order to evaluate its service life.
In particular, at the initial time instant (t0=0 years), the materials mechanical properties and the deterioration modelling parameters are obtained for each sample generated within the Monte Carlo simulations.
The statistical quantification of the model parameters describing the chloride induced corrosion and the mechanical properties of materials adopted in the present study is provided in Table 1.
Conclusions The structural lifetime of a deteriorating reinforced concrete element, exposed to an aggressive environment, is investigated by proposing a computational fibre-approach to predict the time-evolution of its mechanical and geometrical properties, mainly considering the damaging process induced by the diffusive attack of chlorides.
Cornell, Probability-Based Load Criteria: Load Factors and Load Combinations, Journal of the Structural Division, Vol. 108(ST5), 1982, pp. 978-997.

Microstructure, phase composition, mechanical and tribological properties were studied as functions of alloy composition.
Their favourable properties are good corrosion resistance together with lower density (5.7 g.cm-3 for FeAl [1]) than currently used iron- or nickel-based alloys and low cost of the constituents.
In this work, the effect of partial replacement of iron by other transition metal on the structure and properties of Fe-Al and Fe-Al-Si alloys was studied.
There are two opposite factors influencing the wear rate.
The second factor affecting the wear rate is the ductility.

The effects of treatment conditions on the properties were studied.
Mechanical properties determination Fiber mechanical properties were obtained using YG-003 fiber tensile machine.
Fig. 1 Effect of addition of hydrazine hydrate on properties of the fiber 3.2 Effect of drying time on properties of the fiber Keeping all other variables unchanged, the effect of drying time on the properties of the fiber is shown in Fig. 2.
Fig. 2 Effect of drying time on properties of the fiber It can be seen that the drying time played an important role in the three properties of the modified PAN fiber.
The individual factors of the reaction, such as addition of hydrazine hydrate, drying time, heating temperature and time on the properties of the fiber were all studied in a systematic way.

Anqing Copper Mine’s Study on CRF mechanical properties is the foundation of CRF technology.
The present study on CRF investigates the basic mechanics of cemented rock–tailings filling, primarily the physical and mechanical characteristics of waste rock and tailings, computing and determining the functional relation of CRF strength and influencing factors.
The mechanical intensity law and the extent of the influence of cemented rock–tailings filling on interrelated factors are revealed to provide an important reference for the optimum design of the mix proportions of CRF material.
The aggregate properties of cemented rock–tailings filling directly affect the quality of the mine-filling body and filling cost.
The physical, chemical and mechanical properties were determined in tests that provide the basis for the mechanics experiments on cemented waste rock–tailings filling.

The resulting mechanical properties are shown in Table 2, and the microstructure is shown in Fig. 2.
Mechanical properties of steels.
Tensile properties of the 30KhGSA-40KhMFA welded joint.
Paylasan, Effect of friction welding parameters on mechanical and microstructural properties of dissimilar AISI 1010-ASTM B22 joints, Welding journal. 90 (2011) 102–106
Hascalık, Effect of rotational speed on the interface properties of friction- welded AISI 304L to 4340 steel, Materials and Design. 28 (2007) 301-307

They directly affect the mechanical properties of a casting.
Therefore, plunger speed and ingate area are two main factors affecting the speed of liquid metal entering the cavities.
Fig.9 Mechanical properties of the as-cast HPDC cast, compared with those of squeeze casts both as-cast and heat treated.
Mechanical properties of 6 groups of castings are tested as shown in Table 2 and Fig. 9.
With lower gas content inside the casting, parts can be heat treated to increase theirs mechanical properties. 2.

The results show that mechanical properties of the welded joints will be improved by LSP.
Residual stress of the welding is one of the main factors to affect the structure strength.
As a result, plastic deformation occurs and a hardened layer is formed on the surface of the metallic target, enhancing the mechanical properties of the material such as hardness, fatigue strength, and stress corrosion resistance [5].
At the same time, the mode of ②, ③ laser shock parameters are adopted, the residual stresses of the welding zone are compressive stress, and the hardness excesses that of substrate, which will be benefit to improve the welding mechanical properties [7].
The main conclusions are shown as follows: (1) Mechanical properties of the welding zone by laser shock processing has been obviously improved, such as the stress corrosion resistance, wear resistance, surface hardness and etc. (2) when the laser power density exceeds roughly 1.2×1010 W/cm2, the surface residual stress in the welding zone starts to change.

Workpiece ground surface was free of crack, but severe plastic deformation layer and light burn appeared because of chemical reactions and mechanical factors.
It has good comprehensive mechanical properties and is the most intensively researched and tested titanium alloy.
Table 2 shows mechanical and physical properties of this material [1, 4].
So the construction of complicated layer on ground surfaces could be contributed significantly to chemical reactions and mechanical factors.
The construction of them could be contributed significantly to chemical reactions and mechanical factors. 3.

This article gives a comprehensive discuss from the corrosion mechanism, influencing factors and consequences.
It occupies dominant position among the factors affecting the structural durability.
(1) The mechanical properties of corroded steel The reduction of corroded steel resistance directly influences the service member and structure bearing capacity, when it is serious, it can cause premature failure and even collapse.
Lubrication effect between steel and concrete corrosion layer, transverse rib rust in the steel surface, concrete protective layer’s cracking or peeling can lead to reduction or even complete loss of reinforced concrete bond anchorage properties, ultimately affecting the reinforced concrete bridge’s structural security, applicability and durability.
Research on Influence Factors of concrete carbonation [J].