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Furthermore, the initial threshold limits of their maximum stress intensity factors were measured.
Table 1 shows its mechanical properties [6].
Table 1 Mechanical properties of the Si3N4 specimens [6].
Table 1 shows the relation between initial crack lengths and the initial maximum stress intensity factors.
The values of initial maximum stress intensity factors KImax were calculated before the fatigue tests.

The properties of WPC without coupling agent is close to that of products containing coupling agent.
The four selected factors for board fabrication were board density, hot-pressing temperature and time, and the amount of coupling agent, the three levels for each factor were shown in Table 1.
Property Evaluation According to China’s Industrial standard LY/T1613-2004 ‘Extruded Wood-Plastic Composites’[7], physical and mechanical properties of WPC boards, including density, moisture content, MOR, MOE, thickness swelling, internal bonding strength, water absorption rate of 24h, were tested and analysed.
the properties of WPC composites, the effect of hot-pressing temperature is greater than the density of composites, and the the amount of coupling agent had affected the performance slightly.
Optimized material composition to improve the physical and mechanical properties of extruded wood–plastic composites (WPCs)[J].

Carbon blacks are used universally as fillers in polymer matrix for mechanical, electronical and thermal properties improvement.
Plenty of studies show that the structure and surface properties affect the function of carbon blacks in polymer matrix intensively.
Such factors as interfacial interactions between rubber and carbon black, occlusion of polymers in the internal voids of the aggregates, and filler-filler interactions depend on the structure and surface properties of carbon blacks [3-7].
In order to understand the theoretical mechanism of reinforcement, the surface structures and mechanical properties of black carbons must be defined.
Mi, Carbon black filled powdered natural rubber: Preparation, particle size distribution, mechanical properties, and structures, J.

The properties of the WF/PP-shell composite were highly affected by the WF particle size.
The properties of co-extruded composites are affected by the composition of the layers, the thickness of the outer layer and the manufacturing conditions.
The properties of fibre-reinforced composites in general depend on various factors, such as fibre size, interfacial adhesion between fibre and matrix, stress transfer efficiency through the interface, volume fraction of fibre, aspect ratio of fibre and orientation of fibre [7].
Result and Discussion Tensile properties The effects of different cellulosic fibres in the shell layer on the mechanical properties of the co-extruded composites are summarized in Table 2.
These factors lead to agglomeration through interference of cohesive forces instead of dispersion.

The aim of this study is to evaluate the effect of the infiltration of melted PHB on the mechanical properties of porose HA bodies.
For such application, critical factors for the success of the implant include an appropriate project, the correct selection of materials and its biocompatibility [1].
Its decomposition takes place gradually, keeping its mechanical properties for a longer time when compared to other polymers, for example, poly lactic acid (PLA) [3].
The presence of TCP does not adversely affect the biological properties of HA since TCP is a bioresorbable ceramic.
These properties improve the success probability of the implant and additionally improves the mechanical bonding with the bone [7].

The calculation methods are prospective since they allow one to extend the understanding of hot crack formation and the impact of technological factors in the manufacture of casting.
Theoretical part The effect of heat transfer during cooling and solidification of the casting results in a change in the mechanical properties of the sand layer [7, 8] that impedes the shrinkage of the casting.
Lisovskaya, The Use of Thermal Analysis to Study the Structure and Properties of Roll Steels, Metal Science and Heat Treatment. 56 (2014) 302-305
Mironov, Influence of the Chemical Composition on the Structure Formation and Properties of Temperature- and Wear-Resistant Cast Iron, Steel in Translation. 37 (2007) 229-233
Kolokoltsev, Effect of Chemical Composition and Cooling Conditions on Alloyed White Iron Microstructure and Properties, Metallurgist. 58 (2014) 294-298

The Effect of Second Filler on Cure Characteristic and Mechanical Properties of Si-69 treated Precipitate Silica/NR Composite C.
Cure characteristic and mechanical properties of the rubber compound and rubber vulcanizate were affected both by filler-rubber interaction and filler-filler interaction.
[1,6] studied the effect of various types of FA, available in Thailand, on both curing and mechanical properties.
In terms of mechanical properties of the vulcanizates, modulus at 100 % elongation was not much affected by the addition of FA compared to that of fumed silica used as filler.
Particles dispersion, crosslink density and reinforcement effect are the factors governing vulcanizates properties even so the present of fly ash was not much effect mechanical properties the composite.

During freezing sinking, the displacement and affecting factors of deep alluvium frozen soil wall was a technical problem which need to be resolved.
The factors affecting it such as frozen soil thick, height of deep alluvium, segment height, exposure time and excavated radius were utilized.
The article took the first Chinese design of deep alluvium frozen soil wall over kilometers as background and makes the numerical simulation analysis to the factors concerning the displacement of frozen soil wall, such as the thickness of frozen soil wall, freezing temperature, the excavation high of wellbore, the properties of soil and the exposure time etc. using the frozen soil creep parameters attributed by the finite deformation and using the numerical analysis software of FLAC2D, then compared with the results of actual measurement engineering.
By making regression analysis, obtained the numerical calculation models of freeze wall’s maximum radial displacement considering frozen wall thickness, alluvial soil depth, excavation section high, excavation radius and other factors, which proved the formula rationally through comparing with engineering measurement datas.
(in Chinese) [6] RONGCHan-xin.Astudy on mechanical characteristic of frozen soil wall and shaft lining as well as their interaction mechanism in deep alluvium[D].

Tensile test for aged steel under different strain rate Residual stress significan.tly affects the mechanical properties and lifetime of materials, particularly under cyclic loading and challenging environments.
It is expected that the collapse of the lamellar structure during pre-straining will significantly affect the mechanical properties of the material; normally, there is an increase in hardness and strength owing to strain hardening, but probably a decrease in ductility and toughness.
-d., et al., Friction, wear, and residual strength properties of steel wire ropes with different corrosion types.
[8] Rafix, N.M., et al., Effects of annealing on microstructure and tensile properties of cold- drawn steel wire.
[10] Mroziński, S. et al., Influence of Pre-Strain on Static and Fatigue Properties of S420M Steel.

The article presents the results of a study of the effect of milled and chopped carbon fibers, with an average particle length of 0.2 and 3 mm, respectively, on the mechanical properties of polyphenylene sulfide and its heat resistance.
These polymers have a complex of high mechanical properties, maintain performance at high temperatures, and have high chemical, radiation, heat and fire resistance.
Based on this, it was of interest to study the effect of milled and chopped carbon fibers (CF) on the main properties of PPS and to establish the effect of fiber length and its content in the composite on its mechanical and thermal properties, for further use of the results obtained in the development of carbon-filled composite material based on PPS for 3D printing by the FDM method.
The data obtained correspond to mechanical properties, in particular, to the elastic modulus of these composites, which shows the resistance to deformation of the material.
Chukov, et al., Structure, Mechanical and Thermal Properties of Polyphenylene Sulfide and Polysulfone Impregnated Carbon Fiber Composites, Polymers. 11 (2019) 684