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The natural aging behavior of the joint was systematically studied by local and global mechanical property testing method.
Based on TEM observation and EPMA analysis, the key factors that lead to different natural aging behavior among various regions of the joint were discussed.
Introduction The microstructure and properties of age-hardened Al-Zn-Mg aluminum alloy welds are in a metastable state after welding.
Therefore, in this work natural aging behavior of various regions (especially the weld zone) of the MIG-welded A7N01 aluminum alloy was systematically studied, with the aim of clarifying the key factors that affect the natural aging ability of the welds. 2.
The local tensile properties of the upper, middle and lower layer samples extracted along the welding direction from the weld zone were shown in Fig. 4.

In this part, the simulation of this bridge was sequentially used to analyze the influence produced by structure parameters changing on its mechanical performance.
The cross-sectional properties of two types of girder were same that has the width of 43.5m and height of 4m.
The uniform load was 10.5kN/m, the concentrated load was 360kN, the transverse reduction factor was 0.93, and the eccentric coefficient was 1.15.
The longitudinal deformation of girder in midspan was not affected by changing of tower stiffness.
But the longitudinal deformation of girder was not affected by changing of tower stiffness.

Its properties upon conventional processing were first studied and published in 2011 by Omori et al. [15].
Residual stress as a result of high thermal gradients, is expected to be one of the key factors.
Moreover, the functional properties of the two SMAs will be studied in depth.
Wiley, „Effect of Low‐Temperature Phase Changes on the Mechanical Properties of Alloys near Composition TiNi“, Journal of Applied Physics, Jg. 34, Nr. 5, S. 1475–1477, 1963
Chauvet et al., „Hot cracking mechanism affecting a non-weldable Ni-based superalloy produced by selective electron Beam Melting“, Acta Materialia, Jg. 142, S. 82–94, 2018

Many studies have shown, PBL shear key both in the manufacture and mechanical properties have a great advantage than the traditional shear connectors [2].
Many factors affect the size of this force, such as concrete strength, steel yield strength, the bar diameter, steel hole diameter and so on.
Its main failure modes include two factors: Concrete tenon pressure damage and shear failure of the plate between holes.
Even the same factors are considered, experimental error will cause different amendments to the formula.
The study of PBL shear key bearing capacity factors and bearing capacity formulas, Journal of Railway Science and Engineering, 2007.12(6)

Immersion in seawater does not affect low-cycle fatigue, however, high-cycle fatigue behavior shows significant differences.
In addition to their excellent corrosion and fouling resistance [2], their high mechanical strength compared to conventionally used nylon is one of the advantageous properties of copper alloys.
However, testing of the changes in mechanical properties of this alloy [5] showed overall softening due to 1-year exposure to natural seawater: reduction in ultimate strength of about 7.5% and increase in ductility of about 5.5%.
J., 1979, “The effect of environment and applied current and potential on the corrosion fatigue properties of an as-cast duplex aluminium bronze alloy.
[5] Drach A., Tsukrov I., Gross T., Hofmann U., Aufrecht J., and Grohbauer A., 2012, “Corrosion rates and changes in mechanical properties of copper alloys due to seawater exposure, IMECE2012-88156,” Proceedings of the ASME 2012 International Mechanical Engineering Congress & Exposition, Houston, TX, USA.

Based on the nonlinear dynamical model of the gear system considering friction, the system periodic motion is studied by the Shooting algorithm, also the stability and bifurcation properties of the system periodic motion is obtained by Floquet multipliers.
The system's evolvement properties are presented under different frictional coefficients.
The conclusions are indicated that friction can influence the properties of periodic motion, which improves the stability of periodic motion on a certain extent, but produces new instability periodic motion.
Introduction The clearance, time-varying mesh stiffness, sliding friction between meshing teeth are primary factors which effect the dynamics capability and the working reliability in geared systems, while the stability of the periodic motion and bifurcation properties of the system correspond to no-impact, unilateral impact and bilateral impact of the gear system which effect the vibration state and the noise level.
However, it is seldom to consider the friction between gears how it affects the stability of the system [1].

Since coal beds are anisotropic, their strength properties vary depending on the orientation of the breaking load relative to the directions of lamination and fracturing.
Materials and Methods The nature of anisotropy and the degree of its influence on strength properties are considered on the example of coal beds of the Vorkutsky field.
The occurrence and development of “general” fractures in the zone of “visible” pressing of the formation and, therefore, parameters and shape of dislocations depend on the joint effect of many factors: laminar structure of the formation, parameters of fracturing systems of the formation and side rocks, properties of soil and roof rocks and the degree of their relation to coal formation, method of roof control, parameters of a working face, intensity of works, etc.
At the same time the implementation of parameters of the majority of the specified factors has a random character at each specific moment.
All modern mining and tunneling harvesters and levelers do not have the selectivity of face processing, adaptation of parameters of cuts and cutting modes (change of speed, thickness, direction of a cut, as well as type of active forces) to changing conditions and zone structure of formations according to their physical and mechanical properties [10–13].

From the point of view of mechanical strength, ceramic materials exhibit dispersion results after being subjected to various levels of stress.
Specifically, the mechanical strength of red ceramic incorporated with ornamental rock waste and fired up to 700°C was analyzed, before and after degradation.
Ott and Longnecker [14] shows that the analysis of variance (ANOVA) for a completely randomized design follows the Equation (g): Yij = m + ti + eij (g) Where Yij is the observed value in the plot that received the treatment i with j repetitions, m is the overall observed average, ti is the effect of treatment i and eij is the experimental error, that is, the effect of uncontrolled factors in the plot.
Thus, one is sure that statistically the continuous leaching test is efficient, and, indeed, associated with the degradation of the ceramic material and affecting their durability.
Standard Test Method for Flexural Properties of Ceramic Whiteware Materials.

This article looks at recent research on SCC of duplex stainless steels and the different facets and factors which are relevant to the topic.
The sigma phase formation was the most detrimental factor on the corrosion resistance.
In this context, the effect of "475 ⁰C embrittlement" on the corrosion properties and SCC resistance of DSS should be discussed.
In addition to a loss in mechanical properties, the presence of multiple phases and interfaces play a significant role in the corrosion resistance of DSS.
Puiggali, Influence of s-phase on mechanical properties and corrosion resistance of duplex stainless steels, Corros.

The fracture properties are controlled by the growth and coalescence of voids [1].
The displacement field designated by mode I stress intensity factor is applied on nodes far field from the crack tip. 2. 1.
The modeling is carried out with properties of measured values of matrix (AS resin) (E = 3710 MPa, � = 0.35).
The rubber particle's properties were assumed by initial tensile modulus E = 1.2984 MPa [10].
It can be seen from Fig. 6 that, the octahedral stress greatly reduces affected by debonding condition significantly.