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To study the mechanical properties were applied techniques of Charpy Impact Resistance and Uniaxial Tensile Analysis.
So, the fails are generates and commit the mechanical properties.
The statistical results show that these fail conditions don’t affect the tenacity’s properties of the RHA/PP composite.
Conclusions The mechanical properties of the RHA/PP are affected by RHA weight perceptual and by RHA particle size.
So, with the appropriated condition between the RHA % and PS factors the RHA compound can be applied to produced the RHA/PP composite with small damages in its mechanical properties.

Microstructure and Properties of 0.2mm Thick Sheet Titanium Alloy by Micro-laser Welding Liang Yu1,a, Yuhua Chen1, b, Weihuai Gong1, c 1 National Defense Key Disciplines Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University, Nanchang 330063, China aweld05021132@126.com, bch.yu.hu@163.com, cgwh050211 @126.com Keywords: Microlaser welding; Titanium alloy; Microstructure; Properties Abstract: 0.2mm thick titanium alloy sheet was butt-welded using micro impulse laser, influnce of the different processing parameter on the surface and cross-section morphology of welded joint was studied , testing the mechanical properties of joints.
The impact of environmental factors on the titanium alloy increases with temperature, O, H, N and titanium alloys have high reactivity, leading to embrittlement of welded joints.
(a) Base metal (b) Heat affected zone (c) Nugget Fig. 4 The microstructure morphology of welded joints The mechanical properties of joints.
The mean value is used to assess the average tensile properties of the specimen. 0.2mm thickness laser welded joints TC4 titanium alloy micro-mechanical analysis test data in Table 2.
Table 2 TC4 micro-tensile properties of laser welded joints Sample No.

Experimental investigation on laser milling of Al2O3 ceramic Zhaomei Xu 1,2,a, Zonghai Hong 3,b 1Faculty of Mechanical Engineering, Huaiyin Institute of Technology, Huaian, 223003 2School of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013 3Faculty of Foreign Language, Huaiyin Institute of Technology, Huaian,223003 afuyun588@163.com, bhongzonghai@163.com Keywords: ：Laser milling；Al2O3 ceramic；Orthogonal experiment Abstract: Milling of Al2O3 ceramic is affected by various factors.
The results indicated that the sequence of the factors affecting on the milling depth was laser power，scanning speed, overlap amount，defocused quantity successively.
The roughness was increased because the molten on the specimen surface failed to be removed，thus the pressure of the assist huff gas should be increased to improve the surface quality. 1 Introduction As ceramic materials have many excellent properties, such as high insulated property, excellent heat-resistant, high wear-resistance and good erode-resistant property, they are widely applied in electronic industry and mechanical industry.
Four factors and four levels orthogonal table are selected as Table.
Fig.3 Measurement of milled parts depth Fig.4 Measurement of surface roughness Milling 5 Conclusion By using the range method known orthogonal, of The factors affecting the laser milling depth on the order of magnitude is the laser power, scanning speed, the amount of overlap and the defocus amount.

This paper presents a numerical method for the evaluation of the stress concentration factor (SCF) in three dimensional laminated composites under mechanical loads.
The aim of this analysis is to evaluate numerically the factor of stress concentration under the influence of several parameters such as fibers orientation, the mechanical characteristics of composites and the distance between notches of cross-laminated.
Table 1: Properties of the three composite laminates Properties Glass/Epoxy Graphite/Epoxy Boron/Epoxy E11 (GPa) E22 (GPa) E33 (GPa) G12 (GPa) G13 (GPa) G23 (GPa) ν12 ν13 ν23 50 14.5 14.5 2.56 2.56 2.24 0.33 0.33 0.33 134 10.3 10.3 5.5 5.5 3.2 0.33 0.33 0.53 208 25.4 25.4 7.2 7.2 4.9 0.1677 0.1677 0.035 Figure 1: Geometrical Model To simulate the linear behavior in tension and the influence of fiber orientation and other parameters, we used the computer code Abaqus 6.7.1 [8] for the analysis of composite structures using the finite element method.
The fibers orientation of 0° affects slightly the variation of the geometrical shape of the two notches because in this direction the reinforcement increases the rigidity of the structure.
Our numerical study aim is to analyze the stress concentration factor under the influence of parameters such as geometry, mechanical properties and hole to hole interaction.

The RFAC elastic modulus is significantly lower than ordinary concrete, besides, RFA on elastic modulus was significantly affected than other mechanical properties.
There many factors affected concrete mechanical property, such as mix proportions design, compositions of materials, mixing time, construction technology and work environment.
In these factors, aggregate was a very important factor for concrete mechanical property.
The cause and infuence of self-cementing properties of fine recycled concrete aggregates on the properties of unbound sub-base[J].
Mechanical properties of concrete prepared with different recycled coarse aggregates replacement rate[J].

Flow properties and stress state are indispensable factors for safety assessment of structural materials in operation, which were evaluated using instrumented indentation tests (IITs).
Introduction Instrumented indentation test (IIT) has been extensively used to evaluate mechanical properties and stress state of structural materials in operation due to non-destructive and simple experimental procedure [1-4].
Among them, the evaluation of flow properties and residual stress are powerful since these are indispensable factor for the safety assessment [2,3].
Flow properties, primarily yield strength and tensile strength, are generally considered the most fundamental mechanical properties.
Algorithms for Evaluating Flow Properties and Stress State Flow Property Measurement Using IIT.

Considering the above-mentioned factors, the optimal mixture ratio and substituted amount of composite mineral admixtures replacing equally cement are obtained.
Chemical composition and properties of materials.
Mechanical Properties of Concrete Effect of SS and FA on Mechanical Properties of Concrete.
Effect of SS and BFS on Mechanical Properties of Concrete.
Effect of FA and BFS on Mechanical Properties of Concrete.

Results show that the distributions of mechanical properties in the DMWJ are very inhomogeneous.
(b) Local mechanical properties of the DMWJ.
Discussion The relationship between local mechanical properties and microstructures.
Effects of local mechanical properties on integrity assessment of the DMWJ.
Fig.5 shows that inhomogeneous local mechanical properties distribute across the DMWJ.

,Ufa, Russia, Ufa State Petroleum Technological University amarat.fatkullin1@gmail.com, btna_ugntu@mail.ru, crifriz@mail.ru Keywords: ultrasonic shock vibrations, forced cooling, welding deformations, mechanical properties, heat treatment, electric arc welding.
During operation, oil-refining equipment over time destroyed by welded joints due to the impact of power and temperature loads, corrosion, and other factors.
The repair technology presented by us, which consists in a combination of ultrasonic shock vibrations and forced cooling during the welding process, allows to improve the mechanical properties of the welded joint, as well as to refuse to carry out heating during welding and subsequent heat treatment.
Conclusion Welding joints after repairs of large-thickness machines have a very large heterogeneity of mechanical properties, which causes cold cracks in the HAZ during the repair process, as well as a reduction in the service life of the nodes.
The influence of the chemical composition of the base metal on the viscous properties of the heat-affected zone of large diameter welded pipes, Bulletin of the South Ural State University.

Large quantities of VIDP400 vacuum furnace smelting DZ417G oriented superalloys smelting process has been researched, analysis of the main factors affecting the organizational uniformity and stability, as well as the impact of high temperature tensile and lasting properties has been studied.
Effect of heat treatment on microstructure and mechanical properties of the alloy DZ417G have revealed [2-10].
For the demand of customers on production of large quantities, the company used high-volume vacuum furnace smelting VIDP400 DZ417G oriented superalloys, and make certain of the main factors affecting the organizational uniformity and stability, as well as high temperature tensile and lasting properties.
Mechanical Properties.
Tables 2 and 3 is mechanical properties of the DZ417G superalloy.