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Introduction In mining, blasting, earthquakes, rock failure pattern ,strength and breakage are often affected by loading rate.
SHPB apparatus and pulse shaping techniques A SHPB apparatus which 74 mm diameter was used to test dynamic mechanical properties of granite, show as in Fig.1.
That is to say, granite is strain rate dependent materials, the dynamic increase factor for compression(DIFC) is directly depend on the strain rate.
Contrast of DIFC and DIFT for granite Conclusions A 74-mm-diameter SHPB system is used to investigate the compression and tension mechanical properties of granite at high strain rates in the range of 2.3~108.4/s.
An investigation of the mechanical properties of materials at very high rates of loading.

The basic aim was to investigate the correlation between the wear volume and other mechanical properties (hardness, indentation fracture toughness) of this ceramic composite, and to find a mathematical model, which can predict the wear volume of the investigated materials.
Inhomogeneity analysis and their influence on the mechanical properties of the tested composites are published [2].
Wear is a complex system property, which is dependent on many factors (i.e. contact geometry, surface roughness, microstructure, fracture toughness, speed, load, humidity, temperature, etc.).
As a first step Eq. (1) was used to assess the wear volume because of its simplicity, i.e. requiring only two material properties.
Kuzsella: Some tribological properties of a carbon-derived Si3N4/SiC nanocomposite, Journal of the European Ceramic Society, 24 (2004) pp. 3431-3435 [2] Zs.

Numerous investigations are ongoing in searching for suitable Mg alloy systems with superior properties.
Grain refinement and texture randomization during thermomechanical processing (TMP) are the two most important factors to be considered to improve the formability as well as the mechanical properties of wrought magnesium alloys [2].
In many other alloys, precipitates have been used to control these factors.
Park, The microstructure, tensile properties, and creep behavior of AZ91, AS52 and TAS652 alloy, Journal of Alloys and Compounds, 493 (2010) 502-506
Niu, The microstructure, tensile properties, and creep behavior of as-cast Mg-(1-10)%Sn alloys, Journal of Alloys and Compounds, 440 (2007) 122-126

Errosion-corrosion Critical Performance of Surface Nanocrystalline 20 Carbon Steel in Condensate Water Xiaolei Zhua, Xiaofeng Lub , Xiang Lingc School of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing ,China azhuxiaolei856028@126.com, bxflu@njut.edu.cn, cxling@njut.edu.cn Keywords: Ultrasonic Shot Peening; Surface Nanocrystallization; Errosion-corrosion; Critical Property Abstract: In this paper, the ultrasonic shot peening (USSP) technology was used to obtained surface nanocrystalline of 20 carbon steel.
Therefore, its fatigue resistance, abrasion resistance and corrosion resistance can be improved by enhancing material surface properties of metal construction, which is of great significance to prolong the life of metal construction.
It is well known when grain size of the materials decrease to nanoscale or sub-micron, material properties tend to become isotropic, which improves the material surface hardness and strength effectively.
Thus, the scholars have widely studied the method of material surface nanometer and properties of nanocrystallization materials.
But there are many factors that affect the corrosion resistance of nanocrystallization material, such as the character of alloying element, grain size, grain construction and so on.

These changes in mechanical properties were caused the microstructural transformations upon the welding thermal cycles [7–43].
Reddy, Effect of frequency of pulsing in gas tungsten arc welding on the microstructure and mechanical properties of titanium alloy welds, J.
Sankaranarayanasamy, Some studies on mechanical properties and microstructural characterization of automated TIG welding of thin commercially pure titanium sheets, Mater.
Ram, Microstructure and mechanical properties of Ti-15-3 alloy gas tungsten arc welds prepared using CP-titanium filler, Trans.
Egorov, Effect of welding and heat treatment regimes on the mechanical properties of various titanium alloy welded joints, Chem.

This study allows concluding on which of these corkrubber composites have adequate sealing properties for gasoline as well as blends of gasoline with ethanol.
This study allows concluding that the corkrubber composites have adequate sealing properties for gasoline as well as blends of gasoline with ethanol.
It can also be observed that blends with low and medium percentages of ethanol promote greater variations of physical properties on these materials (hardness, volume, thickness and weight) than gasoline or the E85.
On the other hand, these results drive us to consider some reservations on the use of compounds TS1800 and TS7100, due to the significant variations of the properties.
The composite TS1800 and TS7100 are the most affected after 168 hours of immersion.

Also, Johnson and Sukumaran [3] used a 3-D FE model to analyze the effects of wander and aircraft wheel configurations on the mechanical response of the pavement layers.
Many a factor is involved in, such as layer structure, material properties, soil moisture and temperature, and so on.
The FE results of the flexible pavement are seriously affected, as the variation of these factors is great.
The empirical and mechanical realization on the flexible pavement in the past research can be summarized as follows： (1)A small local part in the known surface curve of the pavement has the functional relationship with the point in the other three top pavement layers; (2)From start to final state, either the deflections of the pavement layers or their relationships are nonlinear.
The functional relation between the ith output variable and the input variables, and as well as the input parameters, and , can be stated as Eq. (1) (1) Where,and are three adjacent points in the surface curve of Layer P-401; is the ith point in the top curve of the layer P-209 under the pavement surface; is the parameter of the material property of the layer P-209; is the thickness parameter of the layer P-209.

Additive manufacturing has significantly advanced in the last two decades and can now produce various mechanical components.
Such pieces aim for future application in hip implants, in which, in addition to the more flexible Ti stem, a femoral head with properties close to the Co-Cr-Mo alloy for excellent wear resistance.
Advances in Mechanical Engineering 11.2 (2019): 1687814018822880
Chinese Journal of Mechanical Engineering 37.1 (2024): 87
"Elucidation of laser welding phenomena and factors affecting weld penetration and welding defects."

Since gramload and torque retention are the critical parameters affecting the slider flight height and op-shock performance of hard disk drives, investigating the swaging process that induced base plate and arm deformation, HSA property and torque retention change are of main focus.
Governing Equation Inherently, the swaging process is a sophisticated problem of metal transformation involving three objects which includes base plate, arm and swage ball that are different in shape and material properties.
Many factors are involved which all contribute to the shift of the HSA characteristics.
Nonlinear material properties were considered [1].
The properties of the materials used in the simulation are listed in Table 1.

Test Results and Theoretical Analysis Cracking Development And Factors.
The Calculation Method of Crack Width Based on test results and the principle of composite materials, the multiply of the volume ratio and the aspect ratio of fiber which is the main parameter to affect the mechanical properties of fiber concrete can be defined as the characteristic parameter of basalt fiber [5] and can be expressed as: （1） The nature that the crack width was decided with the strain differences of the reinforcement bar and concrete between the main cracks won't change, even though the maximum crack width changes with diversification of characteristic parameter of basalt fiber.
It is the characteristic parameter of basalt fiber that the main factor to affect the effect on preventing the crack of basalt fiber.