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During the operation the properties of the insulating materials gets change: the electric resistance, heat-conducting properties and other properties decrease [13].
Research of time-history properties of materials of cable wares work is sanctified to [14].
Results over of experimental researches of correlation between the dangerous factors of self-ignition of materials in apartments are brought in-process [23, 24].
Boss et al, Thermal and Mechanical Properties of Blends Containing PP and Recycled XLPE Cable Waste, J Polym Environ, 27 (2019) 386–394
Sobkowicz, Review of polymers for heat exchanger applications: Factors concerning thermal conductivity, Applied Thermal Engineering, 113 (2017) 1118-1127

Slashing and Weaving Properties of Twisted Carbon Fiber Yarns Qiang LI a, La Mei GUO b*, Wan Zhen HUANG c and Chao LING d Key Laboratory of Textile Science & Technology, Ministry of Education College of Textile, Donghua University, Shanghai 201620, China alllq1006@163.com;b lmguo@dhu.edu.cn; czjyhwz_1314@126.com;ddhulc2140002@126.com; Keywords: carbon fiber yarns; slashing properties; desizing; weaving properties; Abstract.
Mechanical properties of polymer composites primarily depend on the fiber/sizing and sizing/matrix interfaces even though they are also affected by the original nature of the fiber and matrix resin.
The tensile property of the slashed yarn is an important factor to evaluate sizing property [10].
Results and Discussion The basic properties of carbon fiber yarn.
Besides, the hairiness on the surface of the original yarns were messy, it will seriously affect the weaving property of the carbon fiber yarns.

There are some studies performed that assess the influence of some factors leading to the effect of the heterogeneity of cement stone in concrete upon the mechanism of crack propagation, destruction and strength [1, 2, 3].
Some known methods of effecting hardening systems during their making and processing are possible to improve the structural characteristics and basic physical and mechanical properties [4].
Based on the mechanism of action on the destruction process, additives with similar properties are known as damping agents [6].
Otherwise, the introduction of low-strength low-modulus plastic stuff in energy extinguisher cores may negatively affect the basic physical and mechanical properties of concrete.
Dampers improve many technical properties of concrete, significantly reduce its shrinkage deformations.

Among kinds of biodegradable plastic, PHAs which were produced by microorganism were a hot area of research on Application of environmental biology because of its special material properties.
Synthesizes the two factors of extraction rate and molecular, NaClO-CHCl3 method was best choice.
And then the properties of the transition peak are initially determined.
So the processing forming could not be affected.
The processing forming could not be affected by different extraction methods.

After a crack has initiated, Stress Intensity Factors (SIF) are obtained and the subsequent propagation is described following Paris law type equations (NASGRO).
This type of structures tends to behave as a simple metallic structure, but with added advantages of metal alloys and fibre-reinforced composites providing superior mechanical properties.
Explanations of the crack opening function, f, the threshold stress intensity factor, ∆Kth , and the critical stress intensity factor, Kc , are presented in the NASGRO Manual [9].
Material properties for fatigue crack initiation are obtained from [3] and propagation from [9].
The final effect is a reduced effective stress intensity factor (Keff), which has beneficial effects on fatigue crack growth.

Without the control of vibration, the machine may be unstable thereby affecting the normal operation of the entire unit [1].
The internal factors of the alloy embody in the composition of the alloy and the microstructure after heat treatment, while the test parameters are generally specified by the amplitude, frequency and temperature applied to the mechanical vibration [4].
Obviously, the mechanical properties of both S316L and M2052 are excellent, while that of cast iron is poor in tensile strength and total elongation.
Adams, Correlation of the damping capacity of cast iron with its mechanical properties and microstructure, J.
Wu, Effect of alloying elements on microstructure, mechanical and damping properties of Cr-Mn-Fe-V-Cu high-entropy alloys, J.

Research on Box Drawing Coefficient of Friction Based on Dynaform Luo Zhigao1, a, Li Xudong2,b, Zhang Jingjing3,c and Zhao Junli4,d 1 School of Mechanical Engineering, Jiangsu university, Zhenjiang, Jiangsu, China 2 School of Mechanical Engineering, Jiangsu university, Zhenjiang, Jiangsu, China 3 School of Mechanical Engineering, Jiangsu university, Zhenjiang, Jiangsu, China 4School of Mechanical Engineering, Jiangsu university, Zhenjiang, Jiangsu, China alzg3359@163.com, bq12356p@126.com, czhangjingde.2006@163.com dzhaojunli_2006@126.com Keywords: Box shaped parts, Friction coefficient, Forming limit, Thickness variation Abstract.
Introduction Metal deep drawing is a very complicated plastic forming process，there are many factors which affect molding quality directly or indirectly.
These factors consist of material, mold clearance, the round angle, sheet thickness, blank holder force, friction and lubrication to mention only but a few[1].
The sheet metal model with FLD anisotropic elastic-plastic material model is United States DQSK36 steel materials,1mm thick, its mechanical properties is: the yield strength 210 MPa, young's modulus 2. 07×105 MPa, poisson ratio 0. 28, anisotropic sclerosis parameter1. 71.
Mechanical and electrical engineering,2007,24( 3) : 61-63

The corrosion influence of 3,5% NaCl – water solution on mechanical, magnetical and micro-failure behavior of ARMCO steel E.
Recently, Barkhausen noise (BHN) measurements allowed for the correlation of mechanical and magnetic properties [10, 11].
Seawater is still a chemical complex system affected by various factors such as concentration and access of dissolved oxygen, salinity, biological activity e.c.t.
Mechanical tensile experiments were performed on a justron type machine with a deformation rate of 0,2mm/min.
This was demonstrated by three modes of influences: Influence on the mechanical, magnetical and microfailure behavior of the metal.

Properties of Si, 4H-SiC, GaN.
Because of having similar bond strength of Si-C bonds, these SiC polytypes exhibit similar mechanical properties, such as hardness.
Because of the minor difference in the growth rate on C and Si face, the growth of SiC should be diffusion limited. [29] There are many factors affecting this, such as the partial pressure, intake gasses, substrate tilt angle, and reaction temperature.
These factors will be discussed in the following sections.
Harris, “Properties of Silicon Carbide”

Introduction Cutting force is produced to overcome the extrusion and friction between work piece and scraps from cutting tool in the machining process.The value of cutting force is one important factor that affects the machining quality,meanwhile influences the milling temperature remarkably,which would affect the life-time of the cutter directly.Therefore,it has great significancy to study the influence of cutting force owing to factors of cutting parameters.
(3) In the formula(3): is shearing strength of friction; is shear strength of work material; is normal stress; is the friction factor. 2.4 Remeshing technology With the growth of distortion, material initial mesh of will experience serious distortion, thus reducing the solving precision.
Establishment of FEM model and simulation of cutting process 3.1 Establishment of milling model The 3D milling cutter blade built is shown in Fig.1,material mechanical properties are shown in table 1.
Tab.1 Mechanical Parameters of blade Taking physical model of blade to lead milling module, which is just as shown in Fig.2.
Fig.1 Milling cutter blade Fig.2 The blade through dividing grid Fig.3 The figure of milling model Tab.1 Mechanical Properties of blade material elasticity modulus/GPa Poisson's ratio coefficient of heat conductivity/(W/m•k) blade PCBN 680~815 0.15~0.22 44~100 In order to ensure simulational precision, gridding partition of the blade is set as 20000,which ia as shown in Fig.2. 3.2 Simulation result analysis Calculate the DB file of pre-procelling[5],the milling simulative model is as shown in Fig.3.