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Weights and mechanical properties were measured after six different degradation stages.
In this experimental study mechanical properties of fibres were compared at different strain rates.
They represent a wide range of mechanical properties and degradation times, as can be seen in Fig. 1.
Mechanical properties were also repeatedly evaluated at the end of each stage.
Conclusions Mechanical properties and degradation rates can be tailored to match the device requirements.

The study provided the values of drying rate depending on 5 factors.
Based on the results, the authors found that an increase in the particles drying temperature negatively affected the mechanical properties, surface roughness and wettability of wood-particle panels.
Variable factors and their levels of variation.
To improve the accuracy of the mathematical description, the dependence of the drying rate on various factors was considered in two humidity intervals taking into account the properties of the wood filler.
Romelevich, Studies on mechanical properties of composite materials based on thermo modified timber, Drvna Industrija. 641:1 (2013) 3-8

Optimization Research of Mix Proportion of Frost Resistance Construction of Concrete Based on the MATLAB Language Junjie Zhang1, a, Ruihong Shao2,b , Xiangyi Meng3,c Heilongjiang university of science and technology, Heilongjiang Harbin China,150022 a120611966@qq.com, b 478980025@qq.com, c694934863@qq.com Keywords: Concrete; Freeze-thaw damage; Mix proportion; Multi-objective optimization; MATLAB fgoalattain Abstract: Analyze the influence factors of mix proportion affecting concrete freeze-thaw damage.
Because in the process of proceeding design of mix optimization according to the various properties of concrete, between the objectives and constraint conditions exist potentially conflicting relationship.
Firstly, analyze the main factors of mix proportion which influence freeze-thaw damage of concrete, and establish the functions between key performance indicators of concrete and these factors.
Factors Influencing the Mix Proportion of Concrete Freeze-thaw Damage.
According to a large number of domestic and foreign research results and engineering practice, it is proved that the main factors affecting the durability of concrete is the entrained air content of concrete, but also with the mineral admixture type, quantity, quality and concrete in the bubble properties, pore structure and other factors.

The structural parameters, coating thickness, and physical and mechanical properties were chosen as comparison parameters.
And they are wear out according to the fatigue mechanism, which is typical for coatings with a high level of mechanical properties.
The experimental results of determining the mechanical and tribological properties of the studied coatings are presented in Table 1.
From the point of view of mechanical properties, the results presented in Table 1 indicate the advisability of choosing TiAlN and CrAlSiN coatings, since their strength characteristics are significantly higher than the similar properties of the substrate.
But under certain conditions, this effect can be completely suppressed by the dominance of other factors, for example, during oxidative wear of TiAlN coatings.

The key of affecting the application of embedded fiber optic sensor is the interface strength of fiber layers and bonding strength between the fiber and composite materials.
The main factors affecting the interface performance during the uniaxial tensile process is studied by the experiments, and the effect of strain rate on interface bonding strength is analyzed.
Therefore, when the strain rate is large than 1.0-1.5, the dynamic fatigue properties of fibers mainly show the coating rate effect.
Mechanical properties of composite materials with integrated embedded sensor networks[J].
Characterization of the aramid/epoxy interfacial properties by means of pull-out test and influence of water absorption［J］.

Physical properties of the aggregate materials are shown in Table 1.
Mechanical properties of cork-modified polymer concrete formulations -Average values and standard deviation-.
In order to clarify the influence of cork, mechanical properties of polymer concrete formulations are plotted as a function of cork content in Fig. 2, for compression and flexion.
Binder lack and the low resistance of cork, appear thus as the most relevant factors in explaining the above trend in properties.
Formulations in series A, where binder content is comparatively lower, are more severely affected by cork content; � One of the main factors responsible for loss in properties is the decreasing resin volume as cork content rises along each test series; � The compressive behaviour is remarkably altered by cork, resulting in a less brittle failure; � It is nevertheless clear that the observed properties are still higher than mechanical strengths shown by an ordinary Portland cement concrete prepared with the same siliceous size aggregate - commonly named mortars.

Corrosion of polymeric materials is the result of overcoming the forces of interaction between atoms or molecules, which occurs under the influence of various oxidizing agents, thermal, radiation, mechanical action and other energetic factors.
The phenomenological approach to the description of the destruction process is based on the establishment, on the basis of experimental data, of the changes’regularities in the properties of material and structures, depending on the duration of the aggressive factors action on them.
The penetration of physically active media into the body is carried out through micropores and small capillaries of materials, which affects the change in the chemical structure of polymeric materials due to irreversible processes that worsen the basic physical and mechanical properties of the composition.
The penetration of physically active media into the body is carried out through micropores and small capillaries of materials, which affects the change in the chemical structure of polymeric materials due to irreversible processes that worsen the basic physical and mechanical properties of the composition.
Zhao, Mechanical properties and microstructure analysis of fly ash geopolymeric recycled concrete, Journal of Hazardous Materials. 237 (2012) 20-29

Different molecular structure of PC determines its properties.
But polycarbonate products are easily affected by environmental factors (mainly heat and oxygen) and the degradation is serious even in storage process.
Thermal degradation affects the structure of molecular chain, mechanical properties and optical anisotropy, so the experimental and theoretical studies on the thermal degradation of PC are of particular interest.
The mechanical properties of tensile strength, elongation at break and impact strength is still the highest.
Thermal stability, mechanical properties and optical performance of OQ2720 are better due to its linear microstructures.

Some researchers studied the microstructure stability and mechanical property stability on PWA1484 and SC180[3,5].
The morphology, size and distribution of γ’ phase strongly affect on mechanical properties [3-6].
The shape, size and distribution of γ’ phase significantly affects on alloy mechanical properties.
However, γ’ phase has been coarsened significantly and exhibits irregular aging for 1500~2500h at 980℃ (Fig.3), as a result, the mechanical properties deteriorated rapidly respectively (Fig.2).
Under the factors of elastic and boundary energy, γ’ phase grows continuously larger and larger with [100] orientation.

Introduction Ti3Al based intermetallic alloys have the advantages of both superior high temperature properties and low density, which are highly attractive for aerospace and aircraft applications [1].
Table 4 Schmid factors calculated for the β phase Table 5 Schmid factors calculated for the α2 phase The main slip systems in the DO19 α2 phase include mainly type dislocation acting on (i) prismatic }0110{ , (ii) basal { 0001}, and (iii) pyramidal }1110{ planes.
It could be seen that the Schmid factors in the major textures in the 0o specimen are zero.
After the α2 grains rotate into the {0001} orientation, the Schmid factors increase.
(4) The Schmid factors for the 45 o specimens are the highest in the α2 and β phases.