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The mechanical properties of porous metals have been extensively investigated [7-11].
Compressive tests on various porous metals have demonstrated that the mechanical properties are also affected by the geometry of cells [12] and the microstructures of cell edges (walls) [13].
This enables the investigation of the mechanical properties and the affecting factors of porous materials in more detail.
For the metal foams with a macro-porous structure, the pore size shows no effect on the mechanical properties [14].
Ashby: Cellular Solids: Structure and Properties.

Current research highly concerned about influence factors of the toughen effect and mechanical properties [1-4].
Thus the effective mechanical properties – Young’s Modulus E and Possion’s ratio are defined as Eq. (2).
Particle distribution status is also an important factor affect rubber-toughened polymers.
Chemical and mechanical properties of vinyl-ester /ABS blends, Polymer. 43 (2002) 4503-4514
Lee, Analytical modelling of mechanical properties for rubber-toughened polymers, J.

The use of coupled experimental researches (including NDT – non-destructive testing and local mechanical properties of castings) and simulation tests (Procast, ANSYS) have shown how the properties gradient influences on the safety factor distribution in the casting subjected by chosen load.
These discontinuities are related with local cooling rate and temperature gradient and affect the mechanical properties variation of the casting wall section (casting thickness) [1,2].
It is usually applied in stress calculation to take into account homogenous mechanical properties in all the casting volume without real zones with local mechanical properties.
Fig. 1 Algorithm of experimental-simulation tests coupling the structure and properties gradient with stresses distribution and local safety factors.
As the simulation tests show (ANSYS), the way of discontinuities assumption in the material of the casting significantly affects the calculated real safety factors.

The mechanical properties and the residual stress were determined using the length dependence of the resonance frequencies of cantilevers and beams.
They largely affect the main MEMS/NEMS characteristics, the quality factor (Q) and the resonance frequency (fres) [3-5].
During device processing the mechanical properties of the epitaxially grown material can be altered [8, 9].
The reliability of the device design strongly depends on the proper knowledge of the mechanical properties of the materials involved in the MEMS/NEMS device.
In general, the softening of the mechanical properties is one of the possible effects of materials with reduced dimensions, because hardening can also occur.

Finally, the influence of the weight ratio (Cu/steel) on the mechanical and electrical properties was discussed.
The effects of various weight ratios on the mechanical and electrical properties of the composite are investigated.
Electrical Properties.
It can be inferred from Fig. 4(b) that the capacity of stiffness affecting the electrical resistance gradually decreases with the increasing stiffness and weight ratio.
Rodney, O, Bouaziz, Y, Brechet, Mechanical Properties of Monofilament Entangled Materials, Adv.

The mechanical properties of lost foam pattern and its mechanical property model were studied, which provided theoretical support for the research of numerical control processing and safe casting of lost foam pattern.
In lost foam casting, under normal circumstances, there are many factors affecting the dimensional accuracy of casting, such as the structure, shape and size of the lost foam casting, the influence of the quality of the foam plastic, the influence of the coating, the influence of the casting process, the casting process and so on.
Menges and Knipschild studied the mechanical properties of rigid polyurethane foam.
There are still some works about the influence of cell structure on the mechanical properties of foam plastics.
Compared with low density foam plastics, the mechanical properties of high density foam plastics are seldom studied.

Mechanical Properties of Aerogels : Brittle or Plastic Solids?
The mechanical properties rapidly increase with aerosil %; the aerosil particles strengthen the structure by a factor 5.
Another way to increase the mechanical properties is the sintering.
During these treatments the structure of the aerogel is modified and the mechanical properties are enhanced.
Such models seem attractive to describe the mechanical properties of gels for several reasons.

By changing the section size of a frame beam and column, the mechanical properties of multi-frames under vertical and horizontal loads were studied.
Through research on a frame unit under vertical and horizontal loads，the mechanical properties of a frame unit were obtained.
Analysis of test results Conclusions can be drawn from the failure pattern of the specimen and test results, that there are many factors affecting on the mechanical properties of composite wall.
Then, the following main factors will be focused on, namely filled block and its mechanical properties, the section stiffness of frame beam and column.
In summary, the major factor considered in this experiment has a significant impact on mechanical properties of the composite wall unit, and the impact on the bearing capacity is more outstanding than the stiffness.

Microstructure factors affecting the toughness of the steel were analyzed.
Submerged-Arc Welding (SMAW) trails were conducted and the structures and mechanical properties of the weld joints characterized.
Table 3 summarizes the mechanical properties of the plate under the TMCP condition.
Emi, Microstructure and mechanical properties in hot-rolled extra high yield strength steel plates for offshore structure and shipbuilding, Metall.
Yue, The effect of cooling rate, and cool deformation through strain-induced transformation, on microstructure evolution and mechanical properties of microalloyed steels, Metall.

Another issue of concern in galvanizing high strength steels is the zinc bath temperature, which might affect the mechanical properties of high strength steels.
Nevertheless, these mechanical properties are recovered after galvanizing [3].
This is why the tensile test specimens were pickled for two hours in 10 % HCl acid containing inhibitor to investigate if pickling process can affect the mechanical properties of the steel.
Gutierrez-Solana, Environmental factors in failure during structural steel hot-dip galvanizing, Eng.
Langill, Mechanical Properties of Hot-Dip Galvanized Steel, Structures Congress 2009. 1-6