Search results

In the paper, the effects of thermo-mechanical control process on microstructure and properties of oil country tubular goods by electrical resistance welding are analyzed.
Results and discussion Effects of compression deformation on microstructure and mechanical properties of welded joints.
Specimens were rolled by the same compression deformation to study the effects of deformation temperature on microstructure and mechanical properties of welded joints.
Effect of deformation temperature on the yield strength of base metal Effects of TMCP on the microstructure and mechanical properties of welded joints.
Schematic of grooving corrosion morphology Table 4 Results of grooving corrosion test State of welded joints α Cross section 1 Cross section 2 Cross section 3 Mean Before TMCP 1.96 1.94 1.97 1.96 After TMCP 1.05 1.08 1.07 1.07 Previous research demonstrates that the dominant factors affecting the grooving corrosion susceptibility of welded joints include the internal factors of welded joints and the external corrosive environments [9,10].

According to 35t/h biomass grate boiler which is running actually, the factors which affect exhaust gas temperature are analyzed and summarized to help solving the problem of higher exhaust gas temperature.
Fig 2 Fuel Biomass boiler exhaust gas temperature influence factors analysis 1 The impact of fuel property on exhaust gas temperature Water content, ash, volatile and low heating value of biomass fuel has a direct impact on boiler exhaust gas temperature
Exhaust gas temperature increases by about 0.6℃ when convert water increases by 0.1[1]. 2 The impact of air leakage on exhaust gas temperature Air leakage is one of the main factors which affect on exhaust gas temperature.
And then, the factors which affect exhaust gas temperature are analyzed and summarized, fuel property and air leakage have a greater impact on exhaust gas temperature.
Many factors which affect boiler exhaust gas temperature are not isolated, there is a certain relationship between them, and they are coupling.

The leaching of harmful substances from these waste materials can contribute to secondary pollution, potentially affecting both human health and ecosystems [1] .
Physico-mechanical properties of coarse aggregate and fine aggregate.
Mechanical performance factor of concrete mixes.
Mechanical performance factor for tested specimens. 3.4.
Such findings underscore the robustness of the studied factors in determining mechanical behavior.

Mechanical properties of tungsten heavy alloys are dependent on many factors including the purity of the raw materials, their tungsten content, manufacturing parameters and the microstructure of the final compact.
It was shown that the mechanical properties of the alloys, and especially their ductility, are harmed when tungsten grains are contiguous.
The mechanical properties of tungsten heavy alloys are determined by various factors; in particular, the strength of W/W and W/matrix interfaces [4].
Microstructural factors, such as tungsten particles size, matrix volume fraction and tungsten-tungsten contiguity, affect the mechanical properties of tungsten heavy alloys [5].
The matrix volume fraction and contiguity are the most important microstructural parameters affecting the mechanical properties of liquid phase sintered tungsten heavy alloys.

As the Bamforth[5] puts that, there are many factors affecting concrete performance, which can be divided into material factors and environment factors.
Al-Amoudi[25] and Bader[26] both chose the Arabian Gulf to study the mechanical properties of marine concrete.
Table 2 The gray correlation coefficient of factors influencing the marine concrete mechanical properties.
Meanwhile, the chloride ions concentration has an effect on the concrete mechanical properties.
Besides, it has made the utilization of GRA Theory on the factors analysis on the concrete mechanical properties.

The effect of the incorporation of polypropylene fiber on the mechanical properties of PFRSCC is determined.
The incorporation of fiber in self-compacting concrete can improve mechanical properties and extend the possible fields of application of self-compacting concrete [3].
Properties of polypropylene fiber.
Results and discussion Fresh properties.
Fresh properties of all the mixtures.

Investigating the influence of the power supply type upon the properties of the weld joints under manual arc welding D.P.
Welding diagram The received weld joints were examined for the chemical composition of the weld metal, microstructure and mechanical properties of the joints.
The weld joints completed with the use of different power supplies for arc welding are also supposed to possess different mechanical properties.
The mechanical properties of the weld joints completed with the use of different power supplies are given in tables 5, 6, 7.
Welding fumes as the main factor affecting welder’s labour safety, Welding production. 5 (2009), 51-55

An Investigation of factors affecting and optimizing material removal rate in computer controlled ultra-precision polishing Lai Ting Ho1, a, Chi Fai Cheung1,b , Liam Blunt2,c , Shengyue Zeng2,d 1Partner State Key Laboratory of Ultraprecision machining Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, HK 2 Centre for Precision Technologies, School of Computing and Engineering, University of Huddersfield, Huddersfield, UK amflesley@polyu.edu.hk, bBenny.Cheung@polyu.edu.hk, cl.a.blunt@hud.ac.uk, dzsyhud@hotmail.com Keywords: computer controlled Polishing, ultra-precision machining, mechanical polishing, process optimization, ANOVA, Taguchi Method, Abstract.
To experimentally study the factors affecting the surface generation in CCUP, the Taguchi method was used to design the experiments.
With the use of the Taguchi method, the number of experiments in a particular investigation of the influence of different factors can be significantly reduced.
However, there are many different workpiece materials and due to their material properties, the optimal parameters vary with the materials being polished.
The results of this study provides an important means for better understanding the effect of factors affecting material removal rate in CCUP.

Factors affecting PTFE membrane pore structure and mechanical properties were investigated.
Spinning parameters of PTFE/PVA primary hollow fibers with different PTFE/PVA mass ratios Hollow fiber ID Before sintering Primary-1 Primary-2 Primary-3 Primary-4 Mass ratio of PTFE/carrier 1/1 3/1 5/1 7/1 Characterization The mechanical properties of as-spun hollow fiber membranes were conducted by an Instron tensiometer (Model YG061-1500).
Results and discussion Mechanical property Effects of PTFE/carrier mass ratio on the mechanical property of primary hollow fiber were shown in Fig.1.
Furthermore, Fig.2 illustrated the effect of sintering state on membrane mechanical property.
Some properties of hydrophobic membranes for distillation.

Kennethw, Ahmed and Yue Q.R etc.[1,2,3] studied experimentally the durable properties of FRP in various corrosive environment .Compared with the experimental study, the theory research is relatively few.
Model correction coefficient of damp heat factors.
Acid corrosion is one of the important factors affecting the durability of FRP, Model correction coefficient can be obtained by acid corrosion in acid environment of the pH value
Factors affecting the durability of FRP is diverse in different area.
Mechanical properties and durability of FRP and evaluation of durability of reinforced concrete structures[D].Beijing: Central Research Institute of building and Construction CO.