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Residual stresses have a significant effect on the material’s mechanical properties and they can cause also cracking on the cutting edge. [1,8] Residual stresses occur in the material without external load.
Conclusions The investigated flame cut samples showed that mechanical properties, microstructure and residual stress state of the flame cut edge can be influenced by varying the flame cutting parameters.
Results show that optimizing the cutting parameters, mechanical properties, microstructure and residual stress state of the flame cut edge can be improved and this way cracking probability of the thick steel plates can be reduced.
Vonk, The Properties of flame-cut edges, Final report of Working Group 1913 of the Netherlands Institute of Welding, Technical steel research, Commission of the european communities, 1980
Zhou, Distributions and Influence Factors of Residual Stresses Induced by Oxygen Cutting Opening in Steel Structure, Adv.

The Impact of The Deposition Parameters on The Mechanical Properties of Thin Carbon Layers VOLESKÝ Lukáš 1, a*, BAKALOVA Totka 1, b, BORŮVKOVÁ Karolína 1, c and LOUDA Petr 1, d 1 Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 2, Liberec, Czech Republic, EU alukas.volesky@tul.cz, btotka.bakalova @tul.cz, ckarolina.boruvkova@tul.cz, dpetr.louda@tul.cz Keywords: plasma treatment, carbon, mechanical properties, adhesion, layers Abstract.
The article describes the effect of the pressure in the chamber during the deposition of thin layers on the basic mechanical properties of thin layers based on carbon.
Carbon layers are mostly used for their very good sliding properties especially in cases where can not be used process fluids or where is necessary to reduce the friction between the two materials.
However the best adhesion values were obtained ​​in layers with a maximum deviation of the properties of the deposited layers, i.e.
Summary The aim of this study was to demonstrate the dependence of the mechanical properties of the DLC films on the pressure in the chamber during the process.

THE MECHANICAL PROPERTIES THAT NANO-SIO2 AFFECT EPS LIGHT-AGGREGATE CONCRETE CUI Jian1,a 1Jilin Architectural and Civil Engineering Institute, Changchun 130118) acuijian100@sina.com Keywords: nano-SiO2; EPS light-aggregate concrete; mechanical properties Abstract.
(2) By changing the content of the Nano-SiO2 to its effect on mechanical properties of EPS super light-weight concrete.
(3) The analysis by orthogonal design test of nano-SiO2, redispersible emulsion powders, cellulose ethers, PP fiber on EPS factors affecting the size of super light-weight concrete, determine the optimum proportion, and under the curve by regression analysis on calculating the best ratio of compressive strength of 28D.
(2)when put the optimal Nano-SiO2 into EPS super lightweight concrete, at the same time to join PP fiber cellulose ether and redispersible Latex powder compound optimization, greatly improves the mechanical properties of EPS super lightweight concrete.
[6]Ji Tao, Huang Yuzhou,Preliminary study on physical and mechanical properties of nano-concrete [J],concrete,2003,161 (3): 13-15.

It analyzes residual stresses as one of the factors affecting the state of the surface layer after machining.
Changes in the surface layer affect fatigue properties of the workpiece, fracture propagation conditions and the like. [1, 2].
The applicability of the ultrasonic method is limited by the fact that the rate of acoustic wave propagation can be affected by a number of factors that may overlap with the residual stress effect.
Phase of change of mechanical properties.
The density and configuration of dislocations is changing (lattice disturbances), thus also the mechanical properties. 2.

Application of FOS in Thickness Measurement of Mechanical Seal Measurement Principle and Influence Factors on Measurement Accuracy of Reflection FOS.
Whether FOS resolution in mechanical seal can satisfy the command of thickness measurement or not will be discussed to analysis feasibility and major influence factors.
Rotation speed may influence sensor’s property by affecting flow field and it need to be proved by trial.
In this paper influence factors of medium and rotation speed on sensor property were discussed, where the measured sample with the same material and surface roughness was used.
Based on the analysis of influence factors in thickness measurement of mechanical seal, an experimental rig was built according to the configuration of real mechanical seals which is enclosed and rotatable (shown in figure 1).

Influence of replacement rate on triaxial mechanical performance of recycled concrete Yisheng Su1,2, a, Ercong Meng1,2, b, Zongping Chen1,2, and Junyu Wu1,2, 1 College of Civil Engineering and Architecture, Guangxi University, Nanning, Guangxi, 530004, China 2Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University,Nanning, Guangxi, 530004, China asuyisheng@sina.com, b465800521@qq.com Keyword: recycled concrete, replacement rate, experimental study, triaxial Abstract: Replacement rate is an important factor that affects the mechanical properties of recycled concrete.
This article studies the effect of recycled coarse aggregate replacement rate on mechanical properties of recycled concrete under triaxial stress in the same water cement ratio condition.
Influence of amount of recycled coarse aggregates and production process on properties of recycled aggregate concrete [J].
Mechanical properties of concrete prepared with different recycled coarse aggregates replacement rate[J].
Mechanical properties of recycled aggregate concrete under uniaxial loading [J].

The microstructures and mechanical properties of welded joint were studied by scanning electron microscope and tensile test methods.
These kinds of wrought Al-Si alloy has good mechanical properties and marketing prospects, but studies on their weldability and welding procedures have only just stared.
The investigation has been performed to research the microstructure and mechanical properties of Al-12.7Si-0.7Mg alloy welded joints. 2.
Table 1 shows mechanical properties for welded joints and base materials of extruded Al-12.7Si-0.7Mg and 6063 alloys.
Fig. 4 Engineering stress-strain diagrams of specimens from welded joint and base material Fig.5 SEM fractographs of the tensile tested specimens Table 1 Mechanical properties for welded joints and base materials of extruded Al-12.7Si-0.7Mg and 6063 alloys Alloy State YS(MPa) UTS(MPa) Elongation (%) Al-12.7Si-0.7Mg T1 108 201 11.37 Al-12.7Si-0.7Mg Weld 106 189 8.96 6063 (GB/T 6892-2000) T4 65 130 12.00 6063 (ISO 15614-2-2005) Weld Joint efficiency factor 91 — 0.7 4.

In particular, the mechanical properties of products of the red ceramic have been poorly studied.
After the sintering stage it was determined the following properties: water absorption, linear shrinkage, apparent porosity and mechanical bending resistance in three points.
Several factors can affect the water absorption, such as, the nature of the clay minerals that constitute the raw materials used, their particle size distribution and phase transformations.
Table 2 – Technological properties of the samples obtained with mass B.
According to SOUZA [9] the combination of factors, such as, temperature and time during the sintering (thermal cycle) can affect the degree of sintering suffered by a ceramic body during the firing.

In air entrained concrete, the total air content is not the only factor that affect the final properties of the concrete, the air void structure parameters, including void size, shape, and distribution, are key factors as well.
Air entrainment has not come into practice widely even today due to concrete producers difficulties with air content in concrete, and the factors affecting air entrainment, such as, temperature, cement chemistry, and supplementary cementing materials, all quite important to the final properties of the concrete.
In fact, the air-void size and distribution are also quite important to the final properties of concrete, and they were affected by those factors mentioned above.
In the air entrained concrete, the air void structure is another important factor that affects the final properties of the concrete.
In air entrained concrete, the total air content is not the only factor that affects the final properties of concrete.

Analyses the mechanical equipment management and maintenance chaoqun Leng yuling Huang Nanchang University of Technology, Nanchang, Jiangxi 330044, China Key words: mechanical equipment; Management; Measures; maintenance Abstract：Equipment use, management, maintenance and repair of phase take up of the total life cycle of the equipment for the most part, pays special attention to the equipment management, ensure the safe and normal operation of the enterprise management work is a basic work, it keeps the foundation of the enterprise production and operation, affecting all aspects of the enterprise.
Construction machinery equipment management measures Mechanical safety from people's needs, in the use of mechanical process, use, maintenance, maintenance of all kinds of condition, to make the person's body and mind from external factors endangering the existence of the state and guarantee conditions.
Due to special equipment belongs to greater danger, accident easily cause harm to the operator himself or others, as well as machinery and equipment, public facilities and other major property losses, to ensure its normal operation must be carried out regularly and circuit inspection, to avoid mechanical accidents, and to ensure the safety of production safety and life.
Production equipment distribution should be taken into consideration for equipment maintenance division, the condition of equipment, complexity of technology, production needs and repair fitter's technical level and other factors.
According to the above factors will be divided into several regions and workshop equipment, can also according to equipment classification area maintenance group.