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The related influence of friction stir welded joints on panel formability has been investigated during creep age forming of 2A12 aluminum alloy by establishing a balance between mechanical properties and springback.
For creep age forming, two designated setups using air loading and mechanical loading, as shown in Figs. 2 and 3, were used to perform on these two kinds of samples respectively.
Fig. 1 Friction stir welded integral panels Fig. 2 Air-loading age-forming setup (a) internal; (b) external Fig. 3 Mechanical-loading age-forming setup Results and discussion Age formability of the friction stir welded integral panels.
Sprinback is one of the key factors affect the quality of the formed sheet metal parts, which occurs because of limitations on the maximum usable temperature and the forming time dictated by microstructure requirements [4,5].
For 2xxx alloys, to obtain a good combination of mechanical properties and low level of springback, the aging treatments were typically conducted at 185-195 oC for 6-12 h, and a preferred temperature of 190 oC has been reported on creep age forming of the 2A12 aluminum alloy panels [6].

The basic parameter of visibility is extinction coefficient, mainly relates to size of object, optical properties, weather, visual etc [2].
Many factors affect atmospheric visibility, from the aerosols perspective, fog, smoke, haze, mist, dust can cause a decline in visibility.
From microscopic perspective, particle diameter size, density, are the main factors affecting the extinction coefficient.
Due to the small sampling space, the accuracy is affected by rain or snow.
He points out the influence factor potential index of fog, and further to determine the weights of impact factors.

Flexural testing (three point bending) were conducted to investigate the effect of electrospun CNT/PU neat with different weight fractions toward the mechanical properties of composites.
Result and discussion Mechanical properties The resulting typical flexural test stress-strain curves are presented in Fig. 2.
The presence of beads can affect the mechanical properties of the mats as these beads will serve as stress points.
We also noticed many voids that indicated the non-uniform laminates on some parts and leading to decreased mechanical properties.
The mechanical properties increased when the CNT contents in the PU nanofibers also increased.

Moreover, they did not study the influence of the slope height, and Hansen [4] didn’t take account the effect of soil properties.
Also, Gemperline [24] who developed empirical equations for the ultimate bearing capacity factors for a footing on a slope based on centrifuge tests.
The properties of the interface elements are related to the properties of the adjacent soil elements, for the smooth case, the cohesion is set as C=0, these ensures that the shear stress underneath the footing is zero and the displacement of nodes in the horizontal direction is free, while for the rough case C=Cu, it is characterized with normal stiffness Kn =109 Pa/m and shear stiffness Ks =109 Pa/m.
Various geometries and soil properties were considered, the results of the analyses were compared to other available solutions.
Influences of nonassociated flow rules on seismic bearing capacity factors of strip footing on soil slope by energy dissipation method, 2007, pp. 842–847

In particular, external factors such as pH, temperature, electric and magnetic fields, light, and the concentration of biomolecules can be used to induce the release of biologically active substances and drugs from biomaterials such as smart hydrogels [3].
As a result, the mechanical properties of such smart hydrogels have been improved, and the drug release profile of them has become more stable.
Cross-linking of hydrosols (liquid polymers) converts them into hydrogels with improved physical and chemical properties, including water-holding capacity, hardness and structural integrity, which affects their cytocompatibility as well as biochemical properties [11].
In addition, in our previous work, it was proved that humic substances, due to their ability to cross-link some polysaccharides and proteins, are materials that improve not only the mechanical properties of polymer hydrogels, but also directly affect such smart properties as transdermal ability [15, 16].
Mooney, Alginate: Properties and biomedical applications. 

However, the production by sand casting possesses low mechanical property and the inner pore which will decrease the lifetime and security of the flange.
Finally, the best process parameter and the order of effect of factors are obtained.
Three factors and three levels are taken into consideration in this research, but we do not include the interaction among the factors.
Table 1 is the factors and levels for L9 orthogonal array.
The F values of factors A and C shown in Table 4 have no obvious differences, and both of the factors show significance.

The power cables will be aging under the influence of electric, heat, machinery and so on after being put into operation, it will decrease the electric and mechanical properties of insulating materials so that it will affect the normal power supply when serious fault occurs.
Mechanical damage.
Cable faults caused by mechanical damage make up a high proportion of cable accidents.
The main causes of mechanical damage contain damage of installation, external forcewhen running, motions by the moving vehicle and the natural factors etc.
Cable moistened.The connection seal is lax or the installation of non-performing lead to flooding, there are water or bubbles in insulation layer generated from a bad manufacturing, the metal sheath has pores and cracks or it is stabbed and corroded, these factors can all make the cable moistened.

In 1998, Jing Li and Xinhua Zhou et al.[7] improved Bishop method, considered main factors that affected high loess slopes simultaneously and designed an analysis chart related to stability of loess slopes.
Researches indicate that stability of high loess slopes are mainly affected by seven factors including weight of soil body, cohesive force, internal friction angle, slope ratio, slope height, pore pressure and seismic intensity [12].
As a result, calculating parameters of slopes are obtained, and safety factors of slopes are got by table lookup. 3.2.8 Conformation of safe state.
After each group of parameters has been input, values of each group of safe factors can be obtained by chart lookup function.
Section of old loess (Q1) determination of engineering properties and nonlinear parameters of Jiuzhoutai Section[J].1994,(5):22-25

The arc form is affected by several factors, diameter size, the amount of current flowing through the electrode [5].
Porosity is an inherent risk factor that is imposed, which is a problem when the intent is to have a weld without cavities.
The heat affected zones ‘s change in length was also analysed.
The factor of power of the machine is 0.73 and has a power efficiency of 80%.
) [22] Senthil K.: Effect of Microstructure and Mechanical properties, in: ResearchGate{online} https://www.researchgate.net/publication / (accessed2021/11/07, 14:21 p.m.).

In milling the adhering despair is an important factor that affects the normal running of the roboticized equipment.
We have also analyzed the rule that the milling temperature affects the adhering disrepair, given a theoretic base of the study on the groove optimization.
In order to judge the temperature field, many factors must be taken into account, and some of them are difficult to measure, so it is blurry.
By temperature field's finite element analysis, the fuzzy comprehensive evaluation for temperature field and thermal stress analysis is made, and the premium properties of waved-edge milling insert could be forecasted.
Jiang: Wear, Vol.214, (1998) [4] Z.J Li: Journal of Mechanical Engineering, Vol.29, (1993) No.8, pp.4.