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Keywords: thermosetting resins, structural bonding, adhesives formulations, thermomechanical properties.
Epoxy resins are formulated to generate specific chemical and thermomechanical properties.
Then, to qualify and quantify the mechanical properties of these four adhesives, thermomecanical studies will be performed on bulk samples for which a new cure cycle will be proposed.
Formulations Many applications require epoxy specific properties like low weight, corrosion resistance or good adherence.
The formulations A, C and D will enable us to determine the influence of the thermoset resin nature on the properties of the adhesive.

Table 1 Comparative presentation of the characteristics of energy sources for melting the contribution material [5] The used source of energy Specific power density [W/cm2] Maximum operational power [kW] Energy zone - heating source diameter [mm] Oxy-acetylene flame 102–103 4–5 1–5 Electric arc 5·102–104 30 2–20 In the case of welding-soldering galvanized steel structural components that have a greater thickness than 2 mm, there is a whole range of conditioning factors for the welding-soldering operations success [6-8]: • at the execution of the joint between the two components, there are difficulties in preparing the exact joint geometry and storage area of the zinc layer; • with increasing the steel material thickness, increases the danger that during the brazing operation, the zinc layer may not be uniformly distributed in the joint; • difficulty in achieving a uniform temperature field during welding-brazing operation and obtaining a homogeneous and compact cord; • at the welding-brazing
Experimental results on macroscopic technological defects appeared at welding-brazing the profiles and galvanized Although, in case of welding-brazing, the appearance of the errors is much more reduced comparing with welding the galvanized steel, it can be also mentioned the appearance of typical defects, caused by various technological factors [9, 11].
Correct preparation of galvanized profiles surfaces for welding-soldering, consists mainly of: • Mechanical surface preparation by grinding, trimming, brushing, pickling and degreasing organic solvents [12-15]; • Preparation of the surface by applying the flow layer specific to the type of electrode used [16].
CONCLUSIONS In the paper it is concluded that use of technological method has many advantages compared to traditional solutions (electric welding or screw connections): removing portions of assembled components using flame without being affected the zinc protection, corrosion resistance identical to the assembly basic material, reducing the galvanized assemblies execution time, simplifying the repairing and maintenance technology of structural elements made of galvanized components, while obtaining mechanical and corrosion resistant joints.
Lippold, Dissimilar friction welding of 6061-T6 aluminum and AISI 1018 steel: Properties and microstructural characterization, Mater. and Design, 31 (2010) 2305–2311

The shaped pieces made on Ti were sintered in vacuum at 1100 ºC for 30 minutes, and their microstructure and mechanical properties were determined and compared with dense materials shaped by combining PM and colloidal techniques in previous works Introduction In recent years the interest for the development of new approaches for powder metallurgy processing of Ti and Ti alloys has grown considerably.
Some of the most important problems to overcome through these new processing routes of composite materials are: (i) the grain size coarsening of Ti alloys during sintering, (ii) mechanical properties of the sintered material which are highly affected by the oxygen content and residual porosity, and (iii) the quality and cost of available powder with low size and adequate properties.
Zeta Potential curves for Ti-bare powder and for the addition of 1 wt.% in the base of solids of PEI and PAA In colloidal processing, rheology is a key factor because it determines both the stability of the suspension and the viability of shaping.

Introduction Gas disaster is one of the most serious disasters in China’s coal mines, gas disasters not only cause huge losses of state property and citizens' lives , but also greatly restrict the mine production capacity.
Therefore, with the improvement of the level of mine production that is mechanical and intensive, many mines have been into the deep mining, and there are more and more serious coal mine gas disaster.
In this paper, based on the data from the analysis of the geological structure in the Shingling Mine, Analyzing geological structure of the No.56 coal seam in the Shengli Mine, roof and floor lithology of coal seam make on mine gas occurrence; Analysis influencing factors, including gas emission, gas content and gas pressure, by collecting and finishing the absolute gas emission data since the mine construction and measuring gas content.
The permeability of the coal bed surrounding rock is good or bad, which directly affects the occurrence of coal seam gas, migration or enrichment.
This explain that seam floor elevation is the main factor of No.56 coal seam gas content and it’s gas content gradients up to 1.66m3/t/100m.

There is a great deal of factors that come into play and can affect the efficiency of the evacuation.
Unique to naval ship situations, the first evacuee group to travel a closed door or hatch will incur a delay, the group size and the flux of the door will also affect the evacuee travel time [6].
Based on the above influence factor we can conclude that the ship evacuation model is nonlinear and non-convex.
Undoubtedly, controlling the naval ship evacuation is a significant practical challenge, and understanding how the extent of ship task affects the evacuation effectiveness also requires further research.
However, counter-flows may be a reasonable property if we consider the fire fighting and the succor.

These composites are materials with low density, good mechanical and thermal properties well suitable for applications in gas turbines, high temperature tools and other specialised areas requiring increased oxidation and corrosion resistance at high temperatures.
There are many parameters governing the failure of unidirectional composites, such as fibre strength, matrix toughness, flaw size, fibre and matrix elastic properties, fibre volume fraction and fibre-matrix interface properties including fibre-matrix frictional shear stress.
Final properties and micromechanical performances of composite is thus extremely sensitive to the behaviour of the fibre-matrix interface [11-13].
Properties of the matrix, fibre and composite are given in Table 1.
Table 1: Properties of the glass matrix, fibres and composite [23,24,28] Density [g/cm3] Young's modulus [GPa] Poisson's ratio [-] Thermal exp.

In this work, we will be limited to the parameters on the properties of materials and the load.
A variation of these parameters can affect the stability of the process and the emergence of some plastic instability.
Second, it assumes that the FLC varies according to normal which can give us an idea on the variation of this probability in the case or the location and shape of the FLC is affected.
Reliability Analysis of a mechanical contact between deformable solids.
I J Mechanical Sciences 2005; 47:333–358

Nanomaterials have sparked a tremendous focus in recent years owing to their diverse properties.
Nanotechnology is a fast-emerging field of research because of the extraordinary properties of nanomaterials.
If DSS materials are shrunk to nanoscale, their properties improve massively.
Graphene, a nanocomposite, because of its superior thermal, electrical, and mechanical properties, it was chosen as the nanofiller.
Numerous factors are important to consider while evaluating the sensor's performance like limit of detection (LOD) and sensitivity of sensor ought to be enough for concentration of neurotransmitters in serum.

However, the presence of corrosive species such as HCl, H2O, CO H2S, SO2, chlorides, sulphides, hydrocarbons etc. [1] is a critical factor causing corrosion degradation at elevated or high temperatures.
Corrosion problems in waste incinerators or co-combustion boilers are very complicated due to many factors such as: • complicated combustion atmospheres which contain aggressive corrosion species such as: HCl, SO2, SO3, H2O, CO2, CO, NOx, sulphides, chlorides, dust, fly ash, etc. [1-3] • presence in the flue gas of volatile products such as alkali and heavy metal oxides (e.g.
Na2O, K2O, ZnO, PbO), alkali chlorides (NaCl, KCl) and sulphates (Na2SO4, K2SO4, ZnSO4 and PbSO4) • flue gas velocity fluctuations, which can affect the mechanism and rate of corrosion, especially when volatile species can form [4] • temperature fluctuations (which mainly affect material stress, but can also change the corrosion rate and mechanism) • inhomogeneous waste composition used in combustion processes (e.g. biomass, PVC, domestic refuse, rubber, batteries, etc
Koukkari et al.: Microstructures, Mechanical Properties and Processes (Euromat 99 - Vol. 3, Wiley-VCH Publishers, Weinheim, 2000)

Such a wide set of information collected has been used for investigation of the collective effect of the above mentioned variables on the surface properties of timber structures exposed to weathering.
All of them need to consider the environmental factors that influence further performance of wood.
The chemical changes and the effects of degradation on the physical properties to the coating layer/bulk as well as aesthetical properties are of special concern.
Gloss analysis Gloss meter REFO 60 produced by DrLange with an angle of incidence of 60° has been used for measuring light-reflective properties of the surfaces.
Yildiz, Weathering Properties of Wood Species Treated with Different Coating Applications, BioResources 7,4 (2012) 4875-4888.