Identification of Optimum Laser Beam Welding Process Parameters for E110 Zirconium Alloy Butt Joint Based on Taguchi-CFD Simulations

Satyanarayana, G.; Narayana, K. L.; Rao, B. Nageswara

doi:10.1007/s40516-018-0061-7

Cited by 28 publications

(16 citation statements)

References 8 publications

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“…The finite volume method code in ANSYS is integrated with user-defined functions (UDF) to examine the thermofluid phenomena in the laser welding process by solving the Navier-Stokes equations with the standard k-ε equations in the weld pool and mushy zone (MZ) regions [28]. The density, time and weld pool velocity are denoted as ρ, t and V , respectively, and the continuity equation is:…”

Section: Thermo-fluid Analysismentioning

confidence: 99%

Numerical investigation of temperature distribution and melt pool geometry in laser beam welding of a Zr–1% Nb alloy nuclear fuel rod end cap

2019

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Zr-Nb alloys are used in the nuclear and chemical industries, in which the welding of an end cap to a fuel rod is a critical issue in manufacturing processes. To identify the optimal process parameters for achieving good-quality welds, it is necessary to investigate the thermal environment in the fusion and heat-affected zones. A three-dimensional computational fluid dynamics analysis is performed with a volumetric heat source by simulating the interaction of the heat source and the material and by accounting for the phase change during welding. The model incorporates the buoyancy force and Marangoni stress and generates the temperature distribution, weld bead geometry and fluid flow in the weld pool during the laser welding process.

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Section: Thermo-fluid Analysismentioning

confidence: 99%

Numerical investigation of temperature distribution and melt pool geometry in laser beam welding of a Zr–1% Nb alloy nuclear fuel rod end cap

2019

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“…Selection of an orthogonal array to conduct few experiments, acquiring complete information and confirmation of the identified optimum input process parameters through additional testing (if necessary) is a standard practice in the Taguchi approach [9]. Taguchi method is a systematic statistical approach, which has been successfully utilized in solving several engineering/industrial optimization problems such as minimization of drilling induced delamination type damages in composite structures, investigations on the significance of input parameters in the stage and satellite separation processes during flight of space launch vehicles, influence of parameters on the performance of chevron type plate heat exchangers and the selection of input process parameters for achieving optimum output responses [10][11][12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…This paper demonstrates the simplicity and the adequacy of Taguchi approach to handle multi-objective optimization problems related to laser welding process for P92 steel. It follows the modified Taguchi method [19] in finding the expected range of the output responses and a simple multi-objective optimization technique [14,15] when compared to the Taguchi based grey relational analysis of [22]. Empirical relations for the output responses are developed in terms of input process variables and validated with existing test results.…”

Section: Introductionmentioning

confidence: 99%

Optimal laser welding process parameters and expected weld bead profile for P92 steel

2019

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P92 steel is classified as one of the creep strength enhanced ferritic steels, whose welding plays a crucial role in power industries. The best choice for such materials is the laser welding in open atmosphere with an inert gas shield. Compared to the frequently being used Taguchi based grey relational analysis, a simple and systematic approach known as the modified Taguchi design of experiments is utilized for P92 steel to obtain the optimized laser welding process parameters and the expected range of output responses. The complicated non-linear relationship between the laser welding process parameters (viz., laser power, welding speed and focal position) and the welding bead geometry (such as depth of penetration, weld width and heat affected zone width) is developed through empirical relations, which are validated by comparing with existing test results. Most of the test results are found to be within the expected range. From the ANOVA analysis the process parameter, viz. the focal position is found to have negligible variation on the overall mean value of the output responses and hence, the process designer can opt for any one the set levels of the focal position during welding operations.

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“…It is being utilized for solving industrial/engineering optimization problems (such as controlling of drilling induced damages in composites, significance of parameters in the stage and satellite separation processes, as well as on the performance of chevron type plate heat exchangers and other manufacturing processes) [24][25][26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Optimal Process Parameters to Achieve Maximum Tensile Load Bearing Capacity of Laser Weld Thin Galvanized Steel Sheets

Harish*¹,

Prasad*²,

Reddy³

et al. 2019

IJRTE

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Steels are protected against corrosion through hot-dip galvanization in which material surfaces are coated with molten zinc. Galvanized steel products are reliable in coating life and performance with lower maintenance and repair cost. Welding of such zinc coated steel sheets is of great economic importance in the automotive industries. Many researchers have utilized the S/N ratio transformation while obtaining the optimal solution of several manufacturing processes. However, the additive law in Taguchi technique estimates the deterministic output response from the mean values of the ANOVA table and unable to provide the expected range of the output response. This paper deals with optimal process parameters for achieving maximum tensile load bearing capacity of laser weld thin galvanized steel sheets utilizing the concepts of a modified Taguchi design of experiments. Excepted range of the tensile load bearing capacity is provided for the specified laser process parameters. Empirical relation is developed and validated for the tensile load bearing capacity in terms of the laser process parameters viz., laser power, welding speed and focal point position

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Identification of Optimum Laser Beam Welding Process Parameters for E110 Zirconium Alloy Butt Joint Based on Taguchi-CFD Simulations

Cited by 28 publications

References 8 publications

Numerical investigation of temperature distribution and melt pool geometry in laser beam welding of a Zr–1% Nb alloy nuclear fuel rod end cap

Numerical investigation of temperature distribution and melt pool geometry in laser beam welding of a Zr–1% Nb alloy nuclear fuel rod end cap

Optimal laser welding process parameters and expected weld bead profile for P92 steel

Optimal Process Parameters to Achieve Maximum Tensile Load Bearing Capacity of Laser Weld Thin Galvanized Steel Sheets

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