Statistical modelling of narrow-gap GTA welding with magnetic arc oscillation

Starling, Cícero Murta Diniz; Marques, Paulo Villani; Modenesi, Paulo José

doi:10.1016/0924-0136(94)01356-6

Cited by 34 publications

(9 citation statements)

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“…However, multi-pass NGLW can be an efficient process for the welding of thick-section components. Zhang et al [14], and Starling et al [15] demonstrated thick section welding using a NGLW approach. Zhang et al [16] studied the feasibility of applying this technique to the welding of 50 mm thick stainless steels using an 8 kW laser.…”

Section: Introductionmentioning

confidence: 99%

A comparison of residual stresses in multi pass narrow gap laser welds and gas-tungsten arc welds in AISI 316L stainless steel

Elmesalamy

Francis

2014

International Journal of Pressure Vessels and Piping

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Thick-section austenitic stainless steels have widespread industrial applications, especially in nuclear power plants. The joining methods used in the nuclear industry are primarily based on arc welding processes. However, it has recently been shown that narrow gap laser welding (NGLW) can weld materials with thicknesses that are well beyond the capabilities of single pass autogenous laser welding. The heat input for NGLW is much lower than for arc welding, as are the expected levels of residual stress and distortion. This paper reports on a preliminary investigation of the through-thickness 2D residual stresses distributions, distortions, and plastic strain characteristics, for the NGLW process using material thicknesses up to 20 mm. The results are compared with those obtained with gas-tungsten arc (GTA) welding. While further work is required on thicker test pieces, preliminary results suggest that the longitudinal tensile residual stresses in NGLW joints are 30e40% lower than those for GTA welds.

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Section: Introductionmentioning

confidence: 99%

A comparison of residual stresses in multi pass narrow gap laser welds and gas-tungsten arc welds in AISI 316L stainless steel

Elmesalamy

Francis

2014

International Journal of Pressure Vessels and Piping

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“…The effect of process parameters (welding current, travel speed, gap width, bead height and arc deflection current) on the bead shape in a narrow gap-GTAW process with magnetic arc oscillation was studied by Starling et al (47). Two AISI 304L stainless steel plates (9.5 and 6 mm thick) were employed to prepare the narrow gap joints and an AWS ER308L wire of 0.96 mm diameter was used as a filler metal.…”

Section: Weld Bead Geometrymentioning

confidence: 99%

Mathematical Modeling of Weld Phenomena, Part 2

Olabi

Alaswad

Benyounis

2014

Comprehensive Materials Processing

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“…"qj = -10 log(TLj) (4) In the present study, the weighting factor of the front height, front width, back height, and back width of the weld bead is equal to 0.25. Table 4 shows the experimental results for the multiresponse signal-to-noise (S/N) ratio.…”

Section: L0mentioning

confidence: 99%

Optimisation of the weld bead geometry in gas tungsten arc welding by the Taguchi method

Tarng

Yang

1998

Int J Adv Manuf Technol

169

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In this paper; dete~lination of the welding process parameters for obtaining an optimal weld bead geomet~ in gas tungsten arc welding is presented. The Taguchi method is used to formulate the experimental layout, to analyse the effect of each welding process parameter on the weld bead geometry, and to predict the optimal setting for each welding process parameter. Experimental results are presented to explain the proposed approach.

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Statistical modelling of narrow-gap GTA welding with magnetic arc oscillation

Cited by 34 publications

References 1 publication

A comparison of residual stresses in multi pass narrow gap laser welds and gas-tungsten arc welds in AISI 316L stainless steel

A comparison of residual stresses in multi pass narrow gap laser welds and gas-tungsten arc welds in AISI 316L stainless steel

Mathematical Modeling of Weld Phenomena, Part 2

Optimisation of the weld bead geometry in gas tungsten arc welding by the Taguchi method

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