Optimization of tensile strength of ferritic/austenitic laser-welded components

E.M. Anawa, A.G. Olabi

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

Ferritic/austenitic (F/A) joints are a popular dissimilar metal combination used in many applications. F/A joints are usually produced using conventional processes. Laser beam welding (LBW) has recently been successfully used for the production of F/A joints with suitable mechanical properties. In this study, a statistical design of experiment (DOE) was used to optimize selected LBW parameters (laser power, welding speed and focus length). Taguchi approach was used for the selected factors, each having five levels (L-25; 5×3). Joint strength was determined using the notched-tensile strength (NTS) method. The results were analysed using analyses of variance (ANOVA) and the signal-to-noise (S/N) ratios for the optimal parameters, and then compared with the base material. The experimental results indicate that the F/A laser-welded joints are improved effectively by optimizing the input parameters using the Taguchi approach.
Original languageEnglish
Pages (from-to)571-577
Number of pages7
JournalOptics and Lasers in Engineering
Volume46
Issue number8
DOIs
Publication statusPublished - Aug 2008
Externally publishedYes

Fingerprint

Laser beam welding
welding
tensile strength
Tensile strength
Dissimilar metals
optimization
Lasers
laser beams
Design of experiments
lasers
welded joints
Signal to noise ratio
Welding
Welds
experiment design
Mechanical properties
signal to noise ratios
mechanical properties
metals

Keywords

  • Ferritic/austenitic (F/A)
  • CO2 laser beam welding
  • Notched-tensile strength
  • Taguchi approach

Cite this

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title = "Optimization of tensile strength of ferritic/austenitic laser-welded components",
abstract = "Ferritic/austenitic (F/A) joints are a popular dissimilar metal combination used in many applications. F/A joints are usually produced using conventional processes. Laser beam welding (LBW) has recently been successfully used for the production of F/A joints with suitable mechanical properties. In this study, a statistical design of experiment (DOE) was used to optimize selected LBW parameters (laser power, welding speed and focus length). Taguchi approach was used for the selected factors, each having five levels (L-25; 5×3). Joint strength was determined using the notched-tensile strength (NTS) method. The results were analysed using analyses of variance (ANOVA) and the signal-to-noise (S/N) ratios for the optimal parameters, and then compared with the base material. The experimental results indicate that the F/A laser-welded joints are improved effectively by optimizing the input parameters using the Taguchi approach.",
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Optimization of tensile strength of ferritic/austenitic laser-welded components. / Anawa, E.M.; Olabi, A.G.

In: Optics and Lasers in Engineering, Vol. 46, No. 8, 08.2008, p. 571-577.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Optimization of tensile strength of ferritic/austenitic laser-welded components

AU - Anawa, E.M.

AU - Olabi, A.G.

PY - 2008/8

Y1 - 2008/8

N2 - Ferritic/austenitic (F/A) joints are a popular dissimilar metal combination used in many applications. F/A joints are usually produced using conventional processes. Laser beam welding (LBW) has recently been successfully used for the production of F/A joints with suitable mechanical properties. In this study, a statistical design of experiment (DOE) was used to optimize selected LBW parameters (laser power, welding speed and focus length). Taguchi approach was used for the selected factors, each having five levels (L-25; 5×3). Joint strength was determined using the notched-tensile strength (NTS) method. The results were analysed using analyses of variance (ANOVA) and the signal-to-noise (S/N) ratios for the optimal parameters, and then compared with the base material. The experimental results indicate that the F/A laser-welded joints are improved effectively by optimizing the input parameters using the Taguchi approach.

AB - Ferritic/austenitic (F/A) joints are a popular dissimilar metal combination used in many applications. F/A joints are usually produced using conventional processes. Laser beam welding (LBW) has recently been successfully used for the production of F/A joints with suitable mechanical properties. In this study, a statistical design of experiment (DOE) was used to optimize selected LBW parameters (laser power, welding speed and focus length). Taguchi approach was used for the selected factors, each having five levels (L-25; 5×3). Joint strength was determined using the notched-tensile strength (NTS) method. The results were analysed using analyses of variance (ANOVA) and the signal-to-noise (S/N) ratios for the optimal parameters, and then compared with the base material. The experimental results indicate that the F/A laser-welded joints are improved effectively by optimizing the input parameters using the Taguchi approach.

KW - Ferritic/austenitic (F/A)

KW - CO2 laser beam welding

KW - Notched-tensile strength

KW - Taguchi approach

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M3 - Article

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JO - Optics and Lasers in Engineering

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