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First of all, elastomer should be resistant to media in the range of medium temperatures, pressures, and other factors that affect a sealing device within the warranty storage and operation period [1-3].
Any change leads to a change in mechanical properties, which results in a sealing failure.
It can have a negative influence on the physical mechanical properties of O-rings.
In view of this fact, the critical task was to study the physical mechanical properties of O-rings after they were held in coolant vapor at a temperature of 110 °C for 72 hours (tables 5, 6).
It leads to a decrease of strength properties.

These properties were simulated under the acetabular component.
Reasons of this can be injuries, genetic factors or wear.
The deteriorated mechanical properties are simulated in particular areas of surrounding THA of the system.
The bone mass has bad mechanical properties and it becomes fragile.
Konečný, Material Properties of Bone Tissue Obtained from CT for Biomechanics Purposes.

The effect of the various dimensional scales particles on the technological properties of the cement system is determined.
According to [15], among the main factors determining the plasticizing ability of mineral dispersions are the morphology of the dispersion particles, their absorption activity, specific surface area, and the difference in the true densities of the additive and cement.
Rheological properties of the “Cement – SCD” system mixtures Summary (1) The bimodal nature of the calcium silicates dispersions determines the features of their influence on the cement systems’ technological properties.
Batis, An analysis of the properties of Portland limestone cements and concrete Cem., Concr.
Lanez, Mohamed Nadjib, Influence of cementitious additions on rheological and mechanical properties of reactive powder concretes, Physics Procedia. 2 (2009) 1255–1261

Material properties mentioned above are shown in Table 1.
Table 1 Material properties Material name Material properties BK7 optical glass mohs hardness: 6.5;density:2.5-3mg/mm3; thick: 2mm white corundum abrasive mohs hardness: 9;grain size:#180,#280,#320,#500,#600,#800,#1200,#2000 Polyurethane polishing pad shore Hardness:55-95; Type Model:IC1000 2.5-3mg/mm3 Polish a piece of BK7 optical glass each time in accordance with the processing parameters the experimental design.
Study on the effect of these eight factors to lapping under certain lapping conditions.
That is to say, the effect function of factors is obtained first, and then the regression equation.
(1) which X(xi) is the effect function of factors, =1, 2, 3, 4, 5, 6.

The paper focuses on the analysis of quality of welds on galvanized steel sheets and their corrosive properties.
Resistance spot welding is the main joint mode in car body manufacturing but it is also a complex process containing the thermoelectricity, metallurgy and many other coupling factors [4,5].
Therefore it is necessary to study the performance indices of the spot welded joint and determine the key influence factors.
The paper deals with the analysis of welds quality on galvanized steel sheets and their corrosive properties.
Tensile tests according to STN 05 1122 were used for the evaluation of mechanical properties of spot welds before and after the exposure to the corrosive environments on the test machine TIRA-test 2300.

As a typical damage mechanism, micro-crack damage have significant effects on the mechanical properties of materials, such as stiffness fall, constitutive anisotropy, strain softening and material fracture[1].
However, due to the hard and brittle properties of the ceramic materials and its microstructure characteristics, lots of researches on the mechanism of crack generation and stress fields have been carried out, and grinding models and stress fields in conventional grinding were established[3-8].
Analysis of Grinding Stress Field Many factors, such as the shape of indenter, the rate of pressure head to the material, the material properties and even external environment, are likely to affect the specific distribution of the stress field.
Due to the direction of pulse force, the larger impact energy generated by ultrasonic vibration is the main factors that the material removal rate of ultrasonic assisted grinding is higher than ordinary grinding.
Peng: Mechanical Engineering, Vol 36 (2000), pp.11

The electrical resistivities (ρ), compressive stresses (σ), and longitudinal strains (εl) of these cured nanocomposites under cyclic uploading/unloading were simultaneously collected, to characterize their stress/strain-sensitive properties.
As for the smart function of CNT-based cement composite, Li et al [10], Luo et al [11], and Yu et al [12] have successively reported the good stress-sensitive properties of cement matrix filled with small amount multi-wall CNT (MWNT).
Its main physical properties are listed in Table 1.
(Teijin Group, Japan), and its main physical properties are also listed in Table 1.
As known, the main factors affecting the conductivity of composites are the contact resistance and the number of conductive netlike pathways.

Fabrication and Characterization of Acetic Acid-Treated Salago Fiber-Epoxy Composite: Enhancing Mechanical and Thermal Properties Venisse Nicole C.
This study aims to improve the mechanical and thermal properties of salago fiber composites by treating the fibers with acetic acid and sodium hydroxide.
Impact strength is influenced by interface properties, mechanical reinforcement, and composite geometry.
Millare, Mechanical Properties and Thermal Analysis of Salago and Coir Hybrid Fiber Reinforced Epoxy Resin Composites, Key Eng.
Walter, Influence of alkali treatment on the mechanical properties of new cane fibre/polyester composites, J.

The risk factors affecting reservoir safety are variety, and consequences are serious different, so the model need to invite eight experts to conduct risk assessment for dangerous reservoir.
Experts based on experience, practical engineering, historical data and information in similar projects to screen, monitor, determine risk factors which affect mostly reservoir safety and lead to serious consequence.
In the light of the present situation of reservoir, eight experts pairwise compare risk factors which affect dam safety, spillway, drainage facility to obtain judgment matrix Ai= (Uij)n×n.
It can be seen, risk factors’s weight vector which affect the dam safety is a reasonable.
Determining Risk Factors Membership.

Good topography information is a premise in nanoindentetion and in determining mechanical properties of materials.
AFM is a mechanical imaging instrument that measures the three dimensional topography as well as physical properties of a surface with a sharpened tip.
The final AFM image is obtained from the combined properties of between the geometric properties of the tip and the sample surface.
Despite the often nanoscale nature of the surface undulations, the topography of a surface is known to substantially affect the bulk properties of a material [8].
Nanoindentation is a very important method to determine the mechanical properties of different materials like roughness and Young modulus [9].