Search results

Milling fineness of the binder has significant impact on its properties.
Values of the equation factors for the binders with various specific surface area are stated in Table 2.
It is generally recognized that these processes are decisively influenced by compounding and temperature factors.
Singh, Fly ash/Kaolin based geopolymer green concretes and their mechanical properties, Data in Brief., 5 (2015) 739-744
Tao, Synthesis factors affecting mechanical properties, microstructure, and chemical composition of red mud-fly ash based geopolymers, Fuel, 134 (2014) 315-325

Mechanical properties, structure as well as symmetrically torsional fatigue of these alloys were evaluated.
Due to the alloying the selected aluminum alloys have a good formability, mechanical properties, weldability and corrosion resistance but on the other side they have a low fatigue resistance [2, 3].
The factors which influence fatigue resistance of the material are type and frequency of load, treatment, shape, and surface quality or other stress concentrators of material and influence of the environment where the material is located [5].
Results of mechanical properties evaluated as average value from six measurements are summarized in Table 2.
Table 2 Mechanical properties of aluminium alloys Material YS [MPa] UTS [MPa] A5 [%] Z [%] E [GPa] HV 10 [N.mm-2] HV 30 [N.mm-2] YS/UTS EN AW 6061 205 274 9 9 110 88 80 0.74 EN AW 6082 185 297 20 57 70 83 80 0.62 EN AW 7075 581 636 7 8 74 165 139 0.91 It is possible to estimate that the mechanical properties are the most dependent to type of treatment of materials (T3 and T4).

In addition, properties of polymer composites with added fillers were systematically studied.
In this paper, properties of pure POM and GRF (glass fiber reinforced) POM are systematically studied by numerical simultions.
There are many processing parameters which affect the quality of products, Ho et al. [17] found that filling time, melt temperature and mold temperature were the significant control factors.
The analysis of variance identifies control factors that affect the average values of response variables.
Properties of pure POM and POM with added fillers were systematically studied.

The spinning temperature is one of key factors affected the uneven deformation during the hot power backward spinning for brittle material tubes, such as cast 7075 aluminium alloy tube.
To analyze the evolution regularity of temperature filed in the spinning process, a 3D thermo-mechanical FE model of the process is developed under ABAQUS/Explicit environment.
Rajan and Narasimhan [3] studied the effects of heat treatment of preform material on the mechanical properties of the flow formed part.
Fig.1 3D Coupled Thermo-mechanical FE model for HPBS process of CAA tube Fig.2 Variation curve of energy ratio with spinning time Results and Discussion Simulation conditions.
The material used in the numerical simulation is 7075 CAA tube which mechanical properties are shown in Ref. [8] and other parameters are listed in Table 1.

In this paper the main factors of impacting the quality in cutting the plate between the Shear blade clearance adjustment and control were analyzed, Focused on further analyzing all relevant factors on adjusting the Shear blade clearance , combined with the accumulated process parameters in production of Thick Steel Plate Plant of He Bei Wen Feng Iron and Steel Co., Ltd.
The cut quality problems are caused by many factors, but the most important is the blade clearance adjustment and control.
This model not only applies to blade gap adjustment during cutting carbon steel, but also for high-strength steel and alloy steel shear gap adjustment, at the same time, taking into account the shearing temperature, shear material properties, the cumulative cut area (for the first time model proposed and was introduced, compared with the shear volume of tonnage or accumulation cutting quantity, it is more precisely) and other factors that affect the cutting quality.
And under the disk shear deformation characteristics of metal in the process, full use of the elements affecting the quality of cut, set up a simple Shear blade clearance adjustment model.
The model is basically to meet the production needs of the majority of plate (only 10~30 mm ), but many factors affect the quality of cut, as new product development and increase of the thickness shear, the model remains to be further improved.

It is known that in the process of long-term operation of steel tanks in the main material and welded joints the structural changes occur, which lead to changes in mechanical properties and affect the weldability of steel.
Failure to take these factors into account when carrying out repair work can lead to premature failure of structures, increase in the volume and cost of repair work.
In the article [1], the influence of the number of repairs of the welded joint of the roll billet of the tank wall of steel st3sp and 09G2S on its mechanical properties was studied.
Materials and Methods As the main metal for the preparation of the edge for welding, a high-strength grade of steel S700MC with a thickness of 6 mm was used (chemical composition and mechanical properties are given in table 1 and table 2).
Elsukov, Study of the effect of welded joint repairs number on its mechanical properties, Bulletin of SUSU.

An Investigation into Work Hardening of Shot Peening Affected Layer Using X-Ray Stress Analysis Technique J.B.
A plate specimen, the surface of which may have been strengthened by a mechanical treatment and in a state of biaxial residual stress, is used in the test.
Microhardness is an integrated parameter that can be affected by a series of material properties, such as elasticity, strength, strain hardening capacity, ductility, etc.
Therefore, even for the steel treated in hard state, the micro structural changes of the surface layer during shot peening are a strengthening factor instead of a weakening one.
McLean, Mechanical Properties of Matals, 1st Edn., John Wiley & Sons, New York, 1962

Investigation on the Weldability, Mechanical and Metallurgical Properties of Activated TIG Weldments of Aluminium Alloy 7075 Rajkumar S.1,a, Aadhityaa K.S.2,b, Venkatachalam E.3,c, Vasanthraj M.4,d 1Assistant Professor, Department of Mechanical Engineering, Dr.
The study explores how this flux mixture influences arc constriction, Marangoni convection, and mechanical properties of the weld.
Mechanical properties of weld metal were also improved while using ATIG welding process.
Provided with higher mechanical properties, Aluminium 7075 hot rolled material also includes improved machining characteristics.
Effect of oxide-based fluxes on mechanical and metallurgical properties of Dissimilar Activating Flux Assisted-Tungsten Inert Gas Welds" Journal of Manufacturing Processes 137–143

Among the challenges in titanium MIM is the production of components with desirable surface finishes, mechanical and chemical properties.
The MIM processing parameters were assessed to determine their effect on mechanical and chemical properties.
CP-Ti chemical properties.
Results Mechanical and Chemical Properties.
Due to the chemical, mechanical properties and biocompatibility properties observed for the MIM371 and polyMIM F180E feedstocks, it is recommended that the MIM process above can used to manufacture titanium dental implants.

Analysis of Safety and Risk Factors about the Tailings Dam in the Mental Mines Haiyan Ju 1,a, Guiqing Gao 1,b , Qiuxiang Li1,c , Jianhua Li 1,d 1 Nanchang Institute of Technology, Nanchang 330099, Jiangxi, China ajhyhgw@qq.com, bguiqingg@qq.com, 253793943@qq.com c, d gdwjljh@163.com Keywords: tailings dam; safety; dam failure; risk factor Abstract.
The main impact factors of seismic liquefaction include: the physical nature of the conditions of the tailings, burial conditions and dynamic load conditions [9].
Because dam foundation bearing capacity is not balanced, the quality of dam construction is poor , structure and cross section of the dam body size are poorly designed, or other factors caused the cracks [10].
Conclusion Tailings dam as a major hazard of metal mines, enterprises and safety regulatory must attract enough attention in the factors of the tailings dam failure.
Based on the analysis of the tailings dam failure factors, the proposal of reducing the dam-break accident are the following.