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| 2. |
- Kaplan, Alexander, et al.
(författare)
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Shaping and optimising hybrid weld seam geometries
- 2007
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Ingår i: Lasers in manufacturing 2007. - Stuttgart : AT-Fachverlag. - 9783000214493 ; , s. 73-77
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Konferensbidrag (refereegranskat)abstract
- Hybrid laser-MAG welding experiments were carried out to investigate the effects of process parameters on weld shape and the relationship between weld shape and weld strength. The experiments included butt joints with full penetration and butt joints and fillet joints with partial penetration. The effects of wire feed speed and gap width on weld cross-section were investigated. The effects of root shape at different gap widths on joint mechanical properties were determined. The use of chamfers to reduce gap sensitivity was investigated.
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| 3. |
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| 4. |
- Nilsson, Klas, et al.
(författare)
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Fatigue strength of Nd:YAG-laser welded stainless steel lap joints
- 2001
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Ingår i: Congress proceedings. - Orlando, Fla : Laser institute of America. - 912035730 ; , s. 419-428
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Konferensbidrag (refereegranskat)abstract
- The primary field of application for thin section stainless steels has traditionally been to provide a corrosion resistant surface. More recent applications of these materials have also concentrated on structural applications and there is an increasing demand for data concerning the properties of welds. Laser welding is ideally suited to the joining of thin section stainless steel sheets and this paper presents the results of an investigation into the fatigue properties of such welds. The work investigates the influence of sheet thickness, weld width, porosity and inter-sheet gaps on the fatigue life of the welds. Fatigue tests were carried out on thin section stainless steel lap welds produced by Nd:YAG-laser. Analysis of the fatigue tests results and the fracture surfaces identified sheet thickness and inter sheet gaps as having considerable effect on fatigue life. Weld width has a more moderate influence on fatigue life and weld porosity has a negligible effect at low concentrations.
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| 5. |
- Yao, Y., et al.
(författare)
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Influence of joint geometry and fit-up gaps on hybrid laser-metal active gas (MAG) welding
- 2006
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Ingår i: Journal of laser applications. - : Laser Institute of America. - 1042-346X .- 1938-1387. ; 18:4, s. 283-288
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Tidskriftsartikel (refereegranskat)abstract
- This article presents the results of an experimental program to investigate the sensitivity of the hybrid laser-MAG welding process to gaps between the work pieces being welded. It was concluded that the minimum throat depth of the welds remained surprisingly stable for fillet welds as long as the metal active gas (MAG) parameters were set high enough to fill the gaps involved (up to a gap size of approximately 3 mm). If the MAG parameters were insufficient then the welding process collapsed with increasing gap widths.
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| 6. |
- Yao, Y., et al.
(författare)
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The influence of joint geometry and fit-up gaps on hybrid laser-MIG welding
- 2006
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Ingår i: 10th NOLAMP Conference. - Luleå. - 9163172283 ; , s. 371-381
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Konferensbidrag (refereegranskat)abstract
- This paper presents the results of an experimental program to investigate the sensitivity of the hybrid laser-MIG welding process to gaps between the work pieces being welded. It was concluded that the minimum throat depth of the welds remained surprisingly stable for fillet welds as long as the MIG parameters were set high enough to fill the gaps involved (up to a gap size of approximately 3 mm). If the MIG parameters were insufficient then the welding process collapsed with increasing gap widths.
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