Weld-bead profile and costs optimisation of the CO2 dissimilar laser welding process of low carbon steel and austenitic steel AISI316

Ruggiero, Andrew; Tricarico, Luigi; Olabi, Abdul–Ghani; Benyounis, K.Y.

doi:10.1016/j.optlastec.2010.05.008

Cited by 88 publications

(34 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A step-wise regression method was used to fit the second order polynomial Eq. 1 to the experimental data and to find the significant model terms [23,24]. The same statistical software was used to generate the statistical and response plots as well as the optimization.…”

Section: Experimental Designmentioning

confidence: 99%

Effect of CO2 laser cutting process parameters on edge quality and operating cost of AISI316L

Eltawahni

Hagino

Benyounis

et al. 2012

Optics & Laser Technology

Self Cite

113

View full text Add to dashboard Cite

Laser cutting is a popular manufacturing process utilized to cut various types of materials economically. The width of laser cut or kerf, quality of the cut edges and the operating cost are affected by laser power, cutting speed, assist gas pressure, nozzle diameter and focus point position as well as the work-piece material. In this paper CO 2 laser cutting of stainless steel of medical grade AISI316L has been investigated. Design of experiment (DOE) was implemented by applying Box-Behnken design to develop the experiment lay-out. The aim of this work is to relate the cutting edge quality parameters namely: upper kerf, lower kerf, the ratio between them, cut section roughness and operating cost to the process parameters mentioned above. Then, an overall optimization routine was applied to find out the optimal cutting setting that would enhance the quality or minimize the operating cost. Mathematical models were developed to determine the relationship between the process parameters and the edge quality features. Also, process parameters effects on the quality features have been defined. Finally, the optimal laser cutting conditions have been found at which the highest quality or minimum cost can be achieved.

show abstract

Section: Experimental Designmentioning

confidence: 99%

Effect of CO2 laser cutting process parameters on edge quality and operating cost of AISI316L

Eltawahni

Hagino

Benyounis

et al. 2012

Optics & Laser Technology

Self Cite

113

View full text Add to dashboard Cite

show abstract

“…They stated that weld bead dimensions were affected by the level of heat input. Ruggiero et al [23] and Olabi et al [24] showed the effects of the process parameters on the weld geometry and operating cost for austenitic steel and low carbon steel. The authors developed models and stated that, in terms of weld bead dimensions, the most influential parameter was welding speed.…”

Section: Introductionmentioning

confidence: 99%

The Optimization of Process Parameters and Microstructural Characterization of Fiber Laser Welded Dissimilar HSLA and MART Steel Joints

Yüce

Tutar

Karpat

et al. 2016

Metals

View full text Add to dashboard Cite

Nowadays, environmental impact, safety and fuel efficiency are fundamental issues for the automotive industry. These objectives are met by using a combination of different types of steels in the auto bodies. Therefore, it is important to have an understanding of how dissimilar materials behave when they are welded. This paper presents the process parameters' optimization procedure of fiber laser welded dissimilar high strength low alloy (HSLA) and martensitic steel (MART) steel using a Taguchi approach. The influence of laser power, welding speed and focal position on the mechanical and microstructural properties of the joints was determined. The optimum parameters for the maximum tensile load-minimum heat input were predicted, and the individual significance of parameters on the response was evaluated by ANOVA results. The optimum levels of the process parameters were defined. Furthermore, microstructural examination and microhardness measurements of the selected welds were conducted. The samples of the dissimilar joints showed a remarkable microstructural change from nearly fully martensitic in the weld bead to the unchanged microstructure in the base metals. The heat affected zone (HAZ) region of joints was divided into five subzones. The fusion zone resulted in an important hardness increase, but the formation of a soft zone in the HAZ region.

show abstract

“…Accordingly, a DOE approach has been selected to be implemented in this work, in particular by adopting the Taguchi's methodology with two level factorial design, which have the lower number of runs to study a multifactor and multi-responses process such as the laser cutting. Unfortunately, the two-level FD involve some restrictions given that the quadratic effect cannot be determined using (it is a screen design); to the same extent some of the interactions between the factors affecting the process cannot be determined using Taguchi methodology due to the aliased structures, which means not all the interaction effects can be estimated [28]. Conversely, RSM offers interesting features in analyzing the relationship and the influences of input machining parameters on the responses [24,25,29], making possible to find out all the factor's effects and their interactions.…”

Section: The Experimental Designmentioning

confidence: 99%

Evalaution and optimization of laser cutting parametersfor plywood materials

Eltawahni

Rossini

Dassisti

et al. 2013

Optics and Lasers in Engineering

Self Cite

View full text Add to dashboard Cite

Laser process parameters influence greatly the width of kerfs and quality of the cut edges. This article reports experiments on the laser plywood-cutting performance of a CW 1.5 kW CO 2 Rofin laser, based on design of experiments (DOE). The laser was used to cut three thicknesses 3, 6 and 9 mm of plywood panels. The process factors investigated are: laser power, cutting speed, air pressure and focal point position. The aim of this work is to relate the cutting edge quality parameters namely: upper kerf (UK), lower kerf (LK), the ratio between upper to lower kerfs and the operating cost to the process parameters mentioned above. Mathematical models were developed to establish the relationship between the process parameters and the edge quality parameters, and special graphs were drawn for this purpose. Finally, a numerical optimization was performed to find out the optimal process setting at which both kerfs would lead to a ratio of about 1, and at which low cutting cost take place.

show abstract

Weld-bead profile and costs optimisation of the CO2 dissimilar laser welding process of low carbon steel and austenitic steel AISI316

Cited by 88 publications

References 7 publications

Effect of CO2 laser cutting process parameters on edge quality and operating cost of AISI316L

Effect of CO2 laser cutting process parameters on edge quality and operating cost of AISI316L

The Optimization of Process Parameters and Microstructural Characterization of Fiber Laser Welded Dissimilar HSLA and MART Steel Joints

Evalaution and optimization of laser cutting parametersfor plywood materials

Contact Info

Product

Resources

About