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In this paper unique electro-mechanical system is presented to meet application requirements, as shown in Fig.1.
The mechanical structure of new transmission sensor system is composed of coupling joint, screw, slotted nut, pin, thin-walled shell and strain gauge.
Firstly, the functions of transmission factors and sensing factors are deduced which is the key of the sensing system research[4].
According to mechanical properties, the maximum stress and maximum deformation of shell can be shown as, (1) In equation, Rs means external diameter of shell, rs means inner diameter, Gs means modulus in shear, tR means shearing stress about surface of radius R and gR means shearing strain about surface of radius R.
The mainly affecting factors are the strength and stability of screw, strength at slotted area of nut and shear stress, shear stress of the pin, nut thread tooth strength, thread locking and shell torsional strength, etc.

Pretension is a key factor affecting the performance of rock bolt.
Many factors affect the relationship between nut tightening torque and pretension [11], one of the important factors is the bolt thread machining accuracy.
The factors affecting the bolt threaded accuracy The main factors affecting the accuracy of the bolt thread are as follows: (1) The bolt material.
Table 1 lists the mechanical properties of SMG500 bolt steel.
Table 1 Mechanical properties of SGM500 rebar for rock bolts Specimen No.

Moisture is a critical environmental factor that can be damaging the composite properties.
Costa et al [12] indicated that both temperature and moisture can influence the static mechanical properties of composite laminates.
The presence of moisture within polymeric composites often degrades their physical and mechanical properties.
As shown in Fig. 2, both temperature and humidity may affect the static mechanical properties of composite laminates.
Combined with the temperature effects, these factors may cause significant changes in the matrix toughness affecting the laminate strength [12].

Application of different fabricating process, physical and mechanical properties of polysiloxane sheet composites.
The covalent bonding of SiO2 acts as a crosslink with high functionality that induces significant change in mechanical properties [21].
Mechanical properties Mechanical properties are also one of the important properties analysed to determine the effect of the composites.
Mechanical properties of polysiloxane composite that has been studied previously are as compiled in Table 3.
Mousavinasab, Effects of Filler Content on Mechanical and Optical Properties of Dental Composites Resin, ISBN: 978-953-307-353-8 [14] M.

Their specific mechanical properties are illustrated in Fig. 1 [1,2].
The constituent elements determine the basic properties of the resulting alloys, but they are also influenced by several other factors.
Four core effects have been identified that affect their properties: large-entropy, lattice distortion, slow diffusion and the cocktail effect.
Thus, the mechanical properties of the alloy decrease with increasing temperature to a lesser extent than conventional alloys.
High-entropy alloys have outstanding mechanical properties and can retain their mechanical properties at high temperatures.

Composite exhibited better physical and mechanical properties, such as higher UTS and low coefficient of thermal expansion.
Hashim et al. [9] explained in his work that processing variables such as a number of blades on the impeller, stirring speed, shape and size of the impeller, holding temperature and impeller position are the significant factors to be considered while stir cast these parameters of casting has a major influence on various properties.
Mechanical properties of composite material depend on size and distribution of particles, therefore the porosity level should be maintained minimum.
Mechanical properties improved due to the applied pressure in squeeze casting, which leads to a reduction of microporosity in the alloy and composite.
Furthermore, SiC reinforced 10 wt% composites showed better mechanical properties with 1.82 % of porosity level.

The factor that affects pouring characteristics maximally is the mold vacuuming time.
The essence of RT process is the ability to produce multiple copies of a prototype with functional material properties in short lead-times.
Vacuum casting process Factors affecting the vacuum casting using a silicone rubber mold can be examined from five aspects: materials of silicone, factors in molding, runner system, casting materials and vacuum casting conditions.
Table 1 Level layout of the control factors in L18-N3 OA experiment.
The criteria for parametric designs are concluded as follows: (1) The major factor affecting the part hardness is the vacuum degassing time followed by the vulcanizing method.

The compressive stress-strain relations of the braided composites are not great affected by the geometrical sizes.
However, the mechanical properties of 3D braided composites are affected by many factors, such as the braid forms, manufacturing process, cutting edge conditions and fiber volume fraction etc.
The discrete mechanical properties of the braided composites, especially the strength of the material, can be attributed by the complex braid architecture of the braided composites.
The discrete mechanical properties and distribution characteristics of the composites are obtained.
Resume: Baolai Wang (1979- ), male, Post-doctoral at the station, mainly engaged in the mechanical properties and strength theory for Three-dimensional braided composites.

Abstract On site characterization of wood members is a very challenging task, after considering all the variables affecting the whole structure itself and material used for construction.
The presence of defects, damages and decay significantly affect mechanical properties of timber and influence estimation of global structure characteristics.
Estimation of selected wood properties.
Several PLS models for prediction of chemical composition (lignin, cellulose, and extractives content) [10, 11], physical properties (density, mass loss) [12] and mechanical properties (MoE, tensile strength) [13] were developed with various experiments.
The degradation mechanism is a combination of several factors: moisture, sunlight, heat/cold, chemicals, abrasion by windblown materials, and biological agents.

The test is subjected to 3 samples from base metal, weld metal and heat affecting zone (in the final heat-treated state).
Table 1 - Alloying elements of the studied metal and its mechanical properties Alloying elements (mass %) Mechanical properties C Mn Cr Si Ni Cu P S Rm, MPa Rp0.2, MPa A5, % 0,06 1,0 0,21 0,19 0,18 0,17 0,008 0,003 543 365 29 Results and Discussion At room temperature and atmospheric pressure, gas phase hydrogen charging practically does not occur.
The study is carried out in several directions: measurement of mechanical properties at tensile, analysis of subcritical crack expansion depending on time, growth of fatigue crack in the range of pressures and mechanical stresses, etc.
Hydrogen gas in pipeline can lead to embrittlement zones due to several factors: hydrogen volume concentration, pressure, operational temperature and pipe quality.
Effect of low partial hydrogen in a mixture with methane on the mechanical properties of X70 pipeline steel / T.T.