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Edge fillet laser welding of AISI 304 stainless steel STANCIU Elena-Manuela1,a, PASCU Alexandru1,b*, ROATA Ionut-Claudiu1,c, 0pt) 1Transilvania University of Brasov, Romania a stanciuemanuela@yahoo.com, bpascu.alex@yahoo.com, cionut.roata@unitbv.ro, Keywords: laser welding, edge fillet, AISI 304, stainless steel Abstract: This investigation concerns the influence of key parameters of laser welding on the geometry and microstructural properties of the weld bead.
The main problem of stainless steel welding is the cracking susceptibility and the low mechanical proprieties into the heat affected zone.
The data achieved after performing the experimental tests showed the high influence degree of the parameters on the process stability and on the geometrical properties of the welded bead.
The examination was performed by Everhart Thornley Detector -ETD, with magnifications factor between 400 - 5000 X.
Specific Properties of Ferritic/Austenitic Dissimilar Metals Welded Joints.

It appeared that the count of linen yarn treated with acid cellulose can be not only increased 6-8, breaking strengthen retain ratio can arrive 88%-99%,but also breaking lengthen change less, comprehensive properties reached equilibrium.
Results and Discussion According to the condition of cellulase function, this paper uses orthogonal experiment of four-factor and four-level(L16(44)),experiment factors include concentration of enzyme,PH value, temperature and time.Besides,we analyse the experiment results,which is based on the performance index including the weightlessness,breaking strength and breaking elongationg.As a result, we can conclude the optimum technology condition of the process of acid cellulase.Results showed in Table1.The result and analysis of orthogonal experiment showed in Table 2,Table 3.
number Temperature (˚C) PH Time (min) Concentration of enzyme (%owf) Weight of 10m yarn(g) decrement rate % (toalkali desizing) breaking power (N/m) breaking strength (CN/Tex) Breaking elongation(%) alkali desizing 0.315 122.90 51.20 2.95 1 35 3.5 35 5 0.310 0.95 112.6 46.91 3.03 2 35 4.5 45 2 0.272 13.65 88.60 36.91 2.55 3 35 5.5 55 3 0.280 11.11 81.20 33.83 2.40 4 35 6.5 65 4 0.309 1.90 77.20 32.16 2.60 5 45 3.5 55 4 0.312 0.95 54.90 22.87 2.02 6 45 4.5 65 3 0.281 10.79 94.80 39.50 2.37 7 45 5.5 35 2 0.290 7.94 73.00 30.41 2.19 8 45 6.5 45 5 0.300 4.76 68.40 28.50 1.96 9 55 3.5 65 2 0.281 10.79 84.60 35.25 2.63 10 55 4.5 55 5 0.257 18.41 69.40 45.35 2.03 11 55 5.5 45 4 0.294 6.67 114.20 47.58 3.10 12 55 6.5 35 3 0.304 3.49 89.20 37.16 2.45 13 65 3.5 45 3 0.314 0.32 117.20 18.83 3.08 14 65 4.5 35 4 0.309 1.90 90.60 37.75 2.67 15 65 5.5 65 5 0.312 0.95 129.00 53.75 3.24 16 65 6.5 55 2 0.312 0.95 105.40 43.91 2.97 Table 2 The result and analysis of orthogonal experiment 1 factors
indexes temperature(˚C ) PH value 35 45 55 65 3.5 4.5 5.5 6.5 Weight average（g/10m） 0.293 0.296 0.284 0.312 0.304 0.280 0.294 0.306 variance 0.028 0.026 The count of linen（m/g） 34.13 33.78 5.21 32.05 32.89 35.71 34.01 32.68 variance 3.16 3.03 Mean break strength (CN/Tex) 37.45 30.32 41.34 46.06 38.47 39.88 41.39 35.43 variance 15.74 5.96 Mean break elongation% 2.645 2.135 2.553 2.990 2.69 2.405 2.733 .495 variance 2.51 0.328 Table 3 The result and analysis of orthogonal experiment 2 factors indexes time（min） concentration of enzyame（%） 35 45 55 65 5 2 3 4 Weight average (g/10m) 0.303 0.295 0.290 0.296 0.295 0.289 0.295 0.306 variance 0.013 0.017 The count of linen（m/g） 33.00 33.90 34.48 33.78 33.90 34.60 33.90 32.68 variance 1.48 1.92 Mean break strength（CN/Tex） 38.05 40.46 36.49 40.17 43.63 36.62 39.83 35.09 variance 3.97 8.54 Mean break elongation% 2.585 2.673 2.355 2.710 2.565 2.585 2.587 2.598 variance 0.355
And in the analysis of variance of the yarn count above, the sequence of four factors that influence on the degree of the yarn count are :temperature>PH value>enzyme concentration>time, Now according to this, it must be strictly control temperature and PH value,otherwise it will greatly influence the yarn processing effects.

Introduction The use of Powder Metallurgy (P/M) aims to obtain orthopedic implants with almost net-shaping and adequate mechanical properties and surface porosity.
This TNZT has excellent non-toxic components with good mechanical properties and workability [5, 6, 7].
Table 1 Mechanical properties of Ti 35Nb 7Zr 5Ta.
Nevertheless, those pores could affect the mechanical properties, hence, should be controlled.
Design and mechanical properties of new β type titanium alloys for implant materials.

Customers are more and more demanding to products variety, properties, quality and costs.
Framework of Workflows Development & Management on the Web Site The success of the manufacturing organization business depends on many factors but workflows quality and their interaction are decisive.
KB keeps products’ characteristics and properties and customers’ data, manufacturing cost, delivery deadlines and other specific information.
The manufacturing computational systems and virtual reality modeling of the innovative product and process employing concurrent engineering and agile manufacturing are the main factors acquiring producers’ competitiveness and advantage.
Acquired data of a section MO KB through interface 1 is analysed and used for new product properties, new materials and innovative processes development.

Their work demostrates that very thin and optically transparent nanocomposite film can be applied on surface materials, displaying an antibacterial property without affecting the aesthetics of the material.
They help in the stabilization and regulation of pH and also as consolidating works of art or archeology that present loss of physical or mechanical properties.
There have been many studies and products studied with biocidal properties [91].
Colloidal particles of Ca (OH) 2: properties and applications to restoration of frescoes.
Assessment of new protective treatments for porous limestone combining water-repellency and anti-colonization properties.

Researchers can increase the benefit by designing the nanoparticle with specific ligands on their surface to bind to the desired cells specifically without affecting other cells [23].
A summary of these properties is provided in Table 1 for comparison and clarity.
Designing a nanoparticle with consistent magnetothermal properties is not easy, as small variations in its physical or chemical properties can affect the outcome significantly.
As a result, they can easily be controlled by adjusting factors such as the field’s intensity and frequency.
Gold nanoparticles: Synthesis properties and applications.

The accuracy of the welding robot is a critical factor affects the welding quality; the method to improve its kinematic accuracy is position-pose error compensation which is based on the analysis of its position-pose error [3].
The key factor for analysis of position-pose error is to establish the position-pose error model.
Error analysis of welding robot There are lots of factors influence the robot position-pose accuracy, including: (1) the error of the structure parameters and the movement variables of the robot, there appears deviation between the actual parameters(, , ,) and its nominal value because of the error of the manufacturing and assembling process, as a result cause the error of the robot position-pose [4-5]. (2) Environmental factors, such as the temperature change of the work environment and long time wear of the robot will lead the length of the connecting arms size to produce error, and cause robot position-pose error.(3) the joint error (including the inherent error and the joint angle error which causes by the wear of the kinematic pair), the position transducer error, the control system's error and so on.
Position error caused by the sensor and reducer factors.
The simulation result shows that the error of a single direction is between ± 0.8mm, the total position error caused by the sensor and reducer factors is concentrated in the range of 1mm, which meet the requirements of welding technology.

Furthermore, PLA has high mechanical properties and easy to process.
Nonetheless, the drawback of low degree of crystallinity could cause the undesired properties.
Thermal Properties Investigation.
Oksman, Plasticized Polylactic Acid Nanocomposite Films with Cellulose and Chitin Nanocrystals Prepared Using Extrusion and Compression Molding with Two Cooling Rates: Effects on Mechanical, Thermal and Optical Properties, Composite: Part A 83 (2016) 89-97
Zhou, Nanocomposites of Poly(l-lactide) and Surface-Modified Chitin Whiskers with Improved Mechanical Properties and Cytocompatibility, Eur.

In addition, the structures of carbon fiber is usually thought to be composed of crystalline and holes in two dimensional ordered, and the void content, size and distribution has a great impact on the performance of carbon fiber, and the crystal structure and defect structure is the main factor affecting the strength of carbon fibers.
It was investigated with glass fiber, carbon fiber as reinforced material, polyurethane foam for the vibration characteristics and frequency of composite matrix production response characteristics, and compares this with Sitka spruce that is suitable for making musical instrument panel, the results shows that, for the glass fiber reinforced composite materials, when the glass fiber volume fraction reaches 15%, the mechanical properties of musical instrument panel materials can be satisfied, but it is difficult to produce a composite material with so high glass fiber content.
Species limits are the result of years of production experience, and the species have inherent properties, which are the things they should possess and are indispensable as musical instrument materials.
Current research focuses on the evaluation of acoustic vibration properties of wood unit for making instruments soundboard, and it seldom involves in the acoustic vibration characteristics of the whole block of finished product soundboard.
Therefore, how to evaluate the acoustic vibration properties of the finished board is an important topic. (2) Application of physiological and psychological index to assess acoustic vibration properties of wood for musical instruments sounding board. (3) Strengthening the process of acoustic signals.

The results reveal that the fiber orientation angle is the most significant factor affecting the dynamic characteristics of CFRP/Metal hybrid shaft.
This is due to its good inherent mechanical properties such as high specific strength (strength/density), high specific modulus (modulus/density), high temperature resistance and low coefficient of thermal expansion [4-7].
Mechanical properties of 45 steel.
Properties of carbon fiber epoxy composites.
From Fig. 9, the relationship between the bending natural frequency and the fiber orientation angle is nonlinear because the orthotropic material properties of CFRP.