Usability of laser–arc hybrid welding processes in industrial applications

...................................................................................................................... iii TIIVISTELMÄ ................................................................................................................... v ACKNOWLEDGEMENTS ............................................................................................. vii LIST OF PUBLICATIONS ............................................................................................... x AUTHOR’S CONTRIBUTION ........................................................................................ x LIST OF ABBREVIATIONS AND SYMBOLS ............................................................. xi PART I: OVERVIEW OF THE DISSERTATION ...................................................... xii

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[30]  Vasilii Zakhvalinskii Magnetic and transport properties of LaMnO3+δ, La1-xCaxMnO3, La1-xCaxMn1-yFeyO3 and La1-xSrxMn1-yFeyO3 , 2010 .

[31]  Anni-Kaisa Kähkönen The role of power relations in strategic supply management – A value net approach , 2010 .

[32]  Leena Kaljunen JOHTAMISOPIT KUNTAORGANISAATIOSSA – diskursiivinen tutkimus sosiaali- ja terveystoimesta 1980-luvulta 2000-luvulle , 2011 .

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[42]  Antti Salminen,et al.  The filler wire - laser beam interaction during laser welding with low alloyed steel filler wire , 2010 .

[43]  Guojian Xu,et al.  Microstructure and Mechanical Properties of CO2 Laser-MAG Hybrid Weld of High Strength Steel , 2006 .

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[46]  Cheolhee Kim,et al.  Position welding using disk laser-GMA hybrid welding , 2008 .

[47]  Antti Tourunen,et al.  A study of combustion phenomena in circulating fluidized beds by developing and applying experimental and modelling methods for laboratory-scale reactors , 2010 .

[48]  V. Kujanpää,et al.  Welding of ship structural steel A36 using a Nd:YAG laser and gas–metal arc welding , 2000 .

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[51]  Tero Ahonen,et al.  Monitoring of centrifugal pump operation by a frequency converter , 2011 .

[52]  Christian Walz,et al.  The Influence of Various Hybrid Welding Parameters on Bead Geometry Arc power and transfer mode greatly affect bead width, penetration, and reinforcement , 2004 .

[53]  C. Bagger,et al.  Laser/TIG hybrid welding of pot for induction heater , 2004 .

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[59]  S. Katayama,et al.  Observation of keyhole behavior and melt flows during laser-arc hybrid welding , 2003 .

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[61]  Ahti Karjalainen Online Ultrasound Measurements of Membrane Compaction , 2010 .

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[63]  S. Lin,et al.  Effects of Nd:YAG laser + pulsed MAG arc hybrid welding parameters on its weld shape , 2007 .

[64]  R. Martukanitz,et al.  Hybrid Laser Arc Welding Process Evaluation on DH36 and EH36 Steel: This study characterizes the effects laser power, arc power, and laser-arc separation have on weld macrostructure, microstructure, and welding arc , 2010 .

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[66]  M. Immonen Public-Private Partnerships: Managing organizational change for acquiring value creative capabilities , 2011 .

[67]  Flemming Ove Olsen,et al.  Review of laser hybrid welding , 2005 .

[68]  Virpi Junttila,et al.  Automated, adaptive methods for forest inventory , 2011 .

[69]  Mika Lohtander On the development of object functions and restrictions for shapes made with a turret punch press , 2010 .

[70]  Ming Gao,et al.  Effects of welding parameters on melting energy of CO2 laser–GMA hybrid welding , 2006 .

[71]  S. Katayama,et al.  High-power CO2 laser-MIG hybrid welding for increased gap tolerance. Hybrid weldability of thick steel plates with a square groove , 2004 .

[72]  Zhenglong Lei,et al.  Experimental study on welding characteristics of CO2 laser TIG hybrid welding process , 2006 .