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Study the quality of welded joints of steel S235 MITAL Dusan1,a,MICHALIK Peter1,b, ZIVČAK Jozef2,c, CZAN Andrej3,d, STANCEKOVÁ Dana3,e, RADCHENKO Svetlana1,f, VYBOSTEK Jaroslav1,g 1Faculty of Manufacturing Technologies Technical University of Kosice with a seat in Presov, Bayerova 1, 080 01 Presov, Slovakia 2Faculty of Mechanical Engineering Technical University of Kosice, Letná 9, 042 00 Kosice, Slovakia 3Faculty of Mechanical Engineering - University of Zilina,Univerzitna 1, 010 26 Zilina–Slovakia adusan.mital@tuke.sk, bpeter.michalik@tuke.sk,cjozef.zivcak@tuke.sk, dandrej.czan@fstroj.uniza.sk,edana.stancekova@fstroj.uniza.sk, fsvetlana.radchenko@tuke.sk,ginfo@vavslovakia.sk Keywords: welding, structural steel, non-destructive testing, welding current Abstract.
Metallographic tests – detection of heat affected zone and determination of hardness.
Steel S 235 (Fig. 1) is fine grained steel, quality structural steel, statically and dynamically loaded, where in standard is enshrined chemical composition and mechanical properties.
Tarasovičová, Assessment of statistical signification of factors by machining inhomogeneous materials - WPCApplied Mechanics and Materials, 308, (2013) 165-16 [9] M.

The material is subjected to shearing forces and heat which cause its physical properties to change.
Material properties have a significant influence on the length of the spiral flow, as documented in the Results section below.
Suitable orientation of glass fibers has a significant influence on mechanical properties of the final part, particularly strength and stiffness.
The dependency of the spiral flow length on process parameters Factors, which significantly influence the injection molding process, include melt temperature and injection pressure.
In addition, mold temperature has some influence during filling as well but it is less significant than that of the other factors.

Introduction One of the main factors causing defects in aluminum castings is the presence of pores.
In general, the influence of pores on mechanical properties is related to their size and shape.
Porosity arises from a combination of two factors: alloy shrinkage and precipitation of dissolved gases.
Porosity has also a deleterious effect on the machinability and surface properties of aluminum castings [1-2].
The thermophysical properties of this alloy are based on values reported previously for thermal conductivities [11] and on the Thermo-Calc software databases.

This may be due to little knowledge on the mechanical properties of each of the intermetallic phases.
The slenderness of the coating layer of GA steels (~10 μm) as well as the difficulties in preparing single-phase specimens in bulk form due to the complicated Fe-Zn binary phase diagram have hindered the unveiling of the intrinsic properties of the respective phases.
The micropillar compression test is one of the most suitable methods to investigate the mechanical properties of samples limited in size such as the coating layer of the GA steels.
Possible operative slip systems with the largest values of d/b and Schmid factors for two loading axis orientations for the Γ phase and bcc-Fe.
Parthasarathy, Size-affected single-slip behavior of pure nickel microcrystals, Acta Mater. 53 (2005) 4065-4077.

The stress effect is an important factor that induces MG crystallization just like temperature effect.
In the past 50 years, mechanical property of MG has been researched.
MG deforms homogeneous at high temperatures and yield stress is obviously affected by temperature and strain rate [2].
Mechanical property of MG is contributed to the unique microstructure that is related to alloy component and cooling rate.
The stress effect is an important factor that induces MG crystallization just like temperature effect.

The fibers differ from each other in their chemical composition, properties, and structure.
Polylactide (PLA) is a thermoplastic polyester derived from biomass such as corn or beet, which possesses excellent physical and mechanical properties combined with biocompatibility and biodegradability properties.
The structure and properties of non-woven materials, the possibility of their use as a filtration material, membranes are studied.
The growing root system has a mechanical effect on the polymer fiber.
In the soil, polymer materials are affected by two factors: water and soil microorganisms.

Especially for slender sections that exceed the width-to-thickness ratio limits specified in AISC 2017, it is necessary to consider the sectional resistance affected by local buckling.
Therefore, this study holds research value regarding the analysis of the width-to-thickness ratio design for T-sections in the AISC 2017 specification, particularly when considering factors related to slender sections and cross-sectional resistance.
The robustness of a section indirectly affects the overall stability of the component.
In Fig (1), a schematic diagram of the T-shaped section is presented, referring to the dimensions of the WT13.5×47 section and the corresponding required section properties provided in Table (1) by AISC.
Based on the conclusions drawn above, subsequent modeling will be established to analyze the scope of its physical and mechanical phenomena.

Their researches showed that the solar wheel factor, the number of planet gears factor, errors factor affect the load sharing coefficient to varying degrees.
The equations of torque equilibrium of whole system are formulated and the conditions of deformation compatibility are analyzed based on the mechanical model of power-branching transmission shown in Fig. 2.
(1) (2) Fig. 1 The schematic diagram of power-branching transmission system Fig. 2 The mechanical model diagram of power-branching transmission system Analysis of Equivalent Mesh Error In order to facilitate analysis the effect on load distribution of power-branching herringbone gears transmission system resulting from errors, the conception of equivalent mesh error is introduced.
The uneven load coefficient has much to do with the gears own properties under the condtion of same error.

INTRODUCTION The crucial factor that assures the strength of composites is a good interface between fibres and the matrix [1].
Improper conditions of annealing in air can cause the oxidation of carbon fibres and a decrease in the mechanical properties.
The measurements can be affected by absorption of moisture on the surface of the fibres or some impurities, which makes precise measurements difficult.
Annealing at 600oC for only 0.5 h led to a greater degradation of the fibre surface (Fig. 3d), which affected the mass loss results.
As it was found earlier, improper conditions of annealing in air can cause oxidation of the carbon fibres and a decrease in the mechanical properties Metallisation process The metallisation process for carbon fibres in roving samples and 2D and 3D woven fabrics after annealing at 400-500oC in air was performed.

Combined, these factors have shown that there would be a great advantage in forming at a lower temperature.
AMS-T9046) that does not specify SPF properties.
Several factors restrict regular Ti-6Al-4V alloy from being formed at a lower temperature.
Using the properties at 900°C above, target SPF properties for a new material were set at 35MPa for 3x10 4 strain rate.
NKK released data for incorporation into Mil Handbook 5 specifying the same mechanical properties as Ti-6Al-4V.