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Dissertations / Theses on the topic 'Shielded metal arc welding'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Cronje, M. "Finite element modelling of shielded metal arc welding." Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/2649.

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Thesis (MScEng (Mechanical and Mechatronic Engineering))--University of Stellenbosch, 2005.<br>This study involved the modelling and verification of the Shielded Metal Arc Welding of mild steel with the focus on displacement and temperature distribution prediction of welded plates. The project was divided into three phases namely; the literature survey into finite element modelling of welding processes, the modelling of a welding process and verification of the modelling with experimental results. A working welding model was created using a commercial finite element software package wit

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2

Lindmark, Terese. "Welding parameter window for Tandem gas-shielded metal arc welding and fatigue in welded T-joints." Thesis, University West, Department of Technology, Mathematics and Computer Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-828.

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3

Miller, Jay. "The development of a curriculum for a course in manipulative skills for shielded metal arc welding." CSUSB ScholarWorks, 1997. https://scholarworks.lib.csusb.edu/etd-project/1188.

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4

Du, Plessis John. "Control of diffusible weld metal hydrogen through arc chemistry modifications." Diss., Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-05152007-131110.

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5

Grantham, Jesse A. "Fundamental study of interfacial tension effects on weld bead profile in the shielded metal arc welding process /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487779914826799.

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6

Greene, Michael K. "The effects of titanium on the mechanical properties of shielded metal arc welding (SMAW) of C-Mn steels." Thesis, Monterey, California. Naval Postgraduate School, 1997. http://hdl.handle.net/10945/8297.

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Approved for public release; distribution is unlimited<br>The strength and toughness of low alloy steel shielded metal arc weld (SMAW) metal is markedly improved by the presence of the microconstituent acicular ferrite. Since acicular ferrite is nucleated by the non-metallic inclusions present in the weld metal. Its presence is determined by the size, number, distribution and chemical composition of these inclusions. Previous work has shown that inclusions containing no titanium are usually ineffective as nucleates of acicular ferrite in some C-Mn steel weld metal whereas inclusions containing

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7

Sowards, Jeffrey William. "Development of a chromium-free consumable for joining stainless steel." Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1237845645.

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8

Liang, Dong. "Environmental and Alloying Effects on Corrosion of Metals and Alloys." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1243995273.

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9

Keenan, Patrick Joseph. "Thermal insulation of wet shielded metal arc welds." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/37182.

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Thesis (Nav. E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1994, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Sciences & Engineering, 1994.<br>Includes bibliographical references (leaf 55).<br>by Patrick Joseph Keenan.<br>M.S.<br>Nav.E.

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10

Jönsson, Pär Göran. "Arc parameters and metal transfer in gas metal arc welding." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/12470.

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11

Kim, Yong-Seog. "Metal transfer in gas metal arc welding." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14199.

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12

Liratzis, Theocharis. "Tandem gas metal arc pipeline welding." Thesis, Cranfield University, 2007. http://dspace.lib.cranfield.ac.uk/handle/1826/5686.

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Energy consumption has grown by 2% per year worldwide over the past ten years. In 2005 worldwide 900,000 barrels of oil and 7.6 billion cubic metre of natural gas were produced daily. The exploitation of fields to meet the increased demands in energy requires the presence of adequate infrastructures. High strength pipeline steels(X100) have been developed to operate at higher pressures allowing a greater volume of fuel to be transported. Additional advantages arising from the reduction in wall thickness contribute to reduction in construction costs and steel volume.

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13

Talkington, John Eric. "Variable polarity gas metal arc welding." Connect to resource, 1998. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1130352747.

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Thesis (M.S.)--Ohio State University, 1998.<br>Advisor: Richard W. Richardson, Welding Engineering Program. Includes bibliographical references (leaves 111-113). Available online via OhioLINK's ETD Center

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14

Goodarzi, Massoud. "Mathematical modelling of gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW) processes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ27936.pdf.

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15

Erener, Yavuz. "Analysis Of Welding Parameters In Gas Metal Arc Welding By A Welding Robot." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/2/12607766/index.pdf.

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ANALYSIS OF WELDING PARAMETERS IN GAS METAL ARC WELDING BY A WELDING ROBOT Erener, Yavuz M.S., Department of Mechanical Engineering Supervisor : Prof. Dr. R. Tuna Balkan Co-Supervisor : Prof. Dr. M. A. Sahir Arikan September 2006, 130 pages In Robotic Gas Metal Arc Welding process, the welding parameters controlled by the welder (travel speed of the welding torch, wire feed speed, current, voltage, wire diameter, etc.) should be considered to obtain a desired welding quality. To design an appropriate welding model for the used equipment, the effects of each parameter should be studied by carr

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16

Wang, Ge. "NUMERICAL ANALYSIS OF METAL TRANSFER IN GAS METAL ARC WELDING." UKnowledge, 2007. http://uknowledge.uky.edu/gradschool_diss/538.

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In gas metal arc welding (GMAW), metal transfer plays a crucial role in determining the quality of the resultant weld. In the present dissertation, a numerical model with advanced computational fluid dynamics (CFD) techniques has been developed first in order to provide better numerical results. It includes a two-step projection method for solving the incompressible fluid flow; a volume of fluid (VOF) method for capturing free surface; and a continuum surface force (CSF) model for calculating surface tension. The Gauss-type current density distribution is assumed as the boundary condition for

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17

Jones, Lawrence Anthony. "Dynamic electrode forces in gas metal arc welding." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11287.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.<br>Includes bibliographical references (p. 306-313).<br>by Lawrence Anthony Jones.<br>Ph.D.

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18

Robertson, Tommy. "Investigation of possibility to use spectrometry for monitoring the plasma in gas shielded arc welding." Thesis, KTH, Industriell produktion, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-49972.

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Investigation of the plasma arc by using optical spectrometry has been performed in TIG and MAG welding. Two different spectrometer setups were tested. The aim was to detect defects such asporosity (gas flow variations), bad penetration, burn through defects and undercuts etc. by using spectrometry. Important factors for the setup and measurement procedure are investigated; also problems with the methods and proposal for improvements and future work are discussed. Specific material lines were identified and compared to results from other independent institutes, attempts to calculate the plasma

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19

Ludick, Mark. "Experimental sensitivity analysis of welding parameters during transition from globular to spray metal transfer in gas metal arc welding." Thesis, Peninsula Technikon, 2001. http://hdl.handle.net/20.500.11838/1269.

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Thesis (MTech (Mechanical Engineering))--Peninsula Technikon, Cape Town, 2001<br>Since the discovery of arc welding at the beginning ofthe century, metal transfer has been a topic ofresearch interest. Metal transfer can, in fact be related to weld quality, because it affects the arc stability. Furthermore, it determines the weld spatter, penetration, deposition rate and welding position. Gas Metal Arc Welding (also known as Metal Inert Gas- or MIG welding) is the most co=on method for arc welding steels and aluminurn alloys. Approximately 40% of the production welding in the country is a

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20

Shen, Hao. "Seam position detection in pulsed gas metal arc welding." Access electronically, 2003. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20040823.125740/index.html.

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21

Liu, Xiaopei. "Dual Bypass Gas Metal Arc Welding Process and Control." UKnowledge, 2008. http://uknowledge.uky.edu/gradschool_diss/664.

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GMAW (Gas Metal Arc Welding) is one of the most important arc welding processes being adopted in modern manufacturing industry due to its advantages in productivity, energy efficiency and automation. By monitoring and improving some of the important properties of GMAW such as production rate, metal transfer and base metal heat input, researchers could bring the process efficiency and stability to a new level. In recent years, some innovative modifications of GMAW such as Twins, Tandem and laser-MIG hybrid welding have been adopted into many industrial applications for better productivity. In t

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22

Yan, Ming. "WeldSim : a model for simulating gas metal arc welding." Thesis, The University of Sydney, 2001. https://hdl.handle.net/2123/27861.

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The aim of the project described in this thesis is to develop a theoretical model to predict the performance of gas metal arc welding, also known as metal inert gas welding (MIG) and achieve a better understanding of the mechanism and the physical processes involved. The gas metal arc welding simulation model - WeldSim is an electrical circuit developed from a basic circuit model. It incorporates results from a free-burning arc model to describe the arc and a second order differential equation to describe one-dimensional energy conservation in the welding anode. WeldSim considers the effec

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23

Xu, Pu. "A circuit model for simulating gas metal arc welding." Thesis, The University of Sydney, 1999. https://hdl.handle.net/2123/27678.

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An electrical circuit was developed to model the behaviour of gas metal arc welding (GMAW), also known as metal inert gas welding (MIG). The model incorporates results from a one-dimensional free-burning arc model to describe the arc and a second order differential equation to describe one—dimensional energy conservation in the welding anode.

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24

Hansen, James Christopher. "Rotating Electrode Pulse Gas Metal Arc Welding for Improved Aluminum Shipbuilding Quality." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1606991932450895.

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25

Khalaf, Gholam Hossein. "Neuro-fuzzy control modelling for gas metal arc welding process." Thesis, Loughborough University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263585.

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26

Mazidi, Aimal. "Comparison of a new, high precision, energy efficient welding method with the conventional Gas Metal Arc Welding on high carbon steel base metal." Thesis, Högskolan Väst, Avd för tillverkningsprocesser, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-6860.

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CMT+P welding is less susceptible to hot cracking than the MAG welding process due to use of low heat input properties. Solidification cracking was found in all weld specimens that had greater 0.39KJ/mm heat inputs. Cracking occurs because of the contraction stresses generates during cooling. Hydrogen cracking is found in HAZ with low heat input parameters, this type of cracking occurred because of very rapid cooling and therefore not enough time to allow the hydrogen to dissipate from the specimen. To eliminate this type of cracking the experiment could be repeated by adding heating during we

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27

Davies, Mark H. "Numerical modelling of weld pool convection in gas metal arc welding /." Title page, contents and abstract only, 1995. http://web4.library.adelaide.edu.au/theses/09PH/09phd2563.pdf.

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28

Smailes, Allan J. "Thermal modelling of gas metal arc welding using finite element analysis /." Title page, contents and abstract only, 1999. http://web4.library.adelaide.edu.au/theses/09ENS/09enss635.pdf.

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29

Tam, Joseph. "Methods of Characterizing Gas-Metal Arc Welding Acoustics for Process Automation." Thesis, University of Waterloo, 2005. http://hdl.handle.net/10012/859.

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Recent developments in material joining, specifically arc-welding, have increased in scope and extended into the aerospace, nuclear, and underwater industries where complex geometry and hazardous environments necessitate fully automated systems. Even traditional applications of arc welding such as off-highway and automotive manufacturing have increased their demand in quality, accuracy, and volume to stay competitive. These requirements often exceed both skill and endurance capacities of human welders. As a result, improvements in process parameter feedback and sensing are necessary t

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30

Modenesi, P. J. "Statistical modelling of the narrow gap gas metal arc welding process." Thesis, Cranfield University, 1990. http://dspace.lib.cranfield.ac.uk/handle/1826/831.

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The J-laying technique for the construction of offshore pipelines requires a fast welding process that can produce sound welds in the horizontal-vertical position. The suitability of narrow gap gas metal arc welding (NG-GMA W) process for this application was previously demonstrated. The present programme studied the influence of process parameters on the fusion characteristics of NG-GMA welding in a range of different shielding gas compositions and welding positions. Statistical techniques were employed for both designing the experimental programme and to process the data generated. A partial

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31

Pitrun, Miroslav. "The effect of welding parameters on levels of diffusible hydrogen in weld metal deposited using gas shielded rutile flux cored wires." Access electronically, 2004. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20050202.153920/index.html.

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32

Xu, Jun. "Dynamic thermal tensioning for welding induced distortion control /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/7145.

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33

Jilla, Abhinay. "Evaluation of Total Fume and Heavy Metal Emission Factors Applicable to Gas Metal Arc Welding." ScholarWorks@UNO, 2019. https://scholarworks.uno.edu/td/2612.

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Welding is a metal joining process widely used in many manufacturing facilities around the world. It involves the process of heating the base and filler metals to a high temperature that leads to the formation of fumes. Welding emissions consist of gaseous pollutants and micron and sub-micron particles consisting of different heavy metals. Health risks associated with exposures to weld fume is well recognized in the literature. This research evaluates emissions and emission factors applicable to gas metal arc welding (GMAW) on AH 36 (mild steel) and 316 L (stainless steel). Emission factors ev

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34

Azar, Amin S. "Dry Hyperbaric Gas Metal Arc Welding of Subsea Pipelines : Experiments and Modeling." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for produktutvikling og materialer, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-17721.

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Ambitions in exploration of oil and gas fields at deeper water depth require continuous investigation and maintenance. The transportation pipelines laid in deep waters are both subjected to corrosion and buckling due to environmental phenomena. They may also often undergo branching (namely hot tapping) to redirect (or add to) the transportation paths. Mechanical joints and welding are both considered as available alternatives when sectioning and replacement of the pipes at shallow waters is necessary, yet, welding is more promising for deep waters where remote operation is central. Fusion weld

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35

Ogunbiyi, T. E. B. "Process monitoring and adaptive quality control for robotic gas metal arc welding." Thesis, Cranfield University, 1995. http://dspace.lib.cranfield.ac.uk/handle/1826/4604.

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The aim of this research was to develop an adaptive quality control strategy for robotic gas metal arc welding of thin steel sheets. Statistical methods were used to monitor and control the quality of welds produced. The quality of welds cannot be directly measured during welding. It can however be estimated by correlating weld quality parameters to relevant process variables. It was found sufficient to do this using welding current and voltage transient signals only. The strategy developed was problem solving oriented with emphasis on quality assurance, defect detection and prevention. It was

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36

Ribeiro, A. F. M. "Automated off-line programming for Rapid Prototyping using Gas Metal Arc Welding." Thesis, Cranfield University, 1995. http://dspace.lib.cranfield.ac.uk/handle/1826/10430.

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Rapid Prototyping is a recent CAD/CAM based manufacturing technique which produces prototypes of components in a fraction of the time normally required. This technique normally involves drawing the part as a 3 Dimensional solid model using a CAD program and then 'printing' it in 3 Dimensions. The raw material can be a photopolymer or thermoplastic which solidifies when in contact with light. Other materials are available although producing the final parts a 100% metal is not very usual. Some disadvantages of these techniques are: a) 100% metal prototypes cannot normally be made directly. b) on

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37

de, Souza Nayara. "Total Fume Emissions and Emission Factors Applicable to Gas Metal Arc Welding." ScholarWorks@UNO, 2019. https://scholarworks.uno.edu/td/2603.

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Welding is a common industrial practice that has the potential to emit air pollutants. Emission factors are useful indicators to help in the understanding of the extent of pollution from a process and managing them to reduce or minimize health impacts. The objective of this thesis is to determine emission factors applicable to the gas metal arc welding (GMAW), under varying current and voltage conditions. The most used base metals and an electrode for the shipbuilding industry were considered. A weld fume chamber was used to achieve the project goals along with standard sampling and analytical

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38

Posinasetti, Praveen. "Process modelling and control of pulse gas metal arc welding of aluminum." Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16530/1/Praveen_Posinasetti_Thesis.pdf.

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Recent developments in materials and material joining [specifically Aluminum and Pulse Gas Metal Arc Welding (GMAW-P) technology] have increased the scope and extent of their areas of application. However, stern market demand for the improved weld quality necessitates the need for automation of the welding processes. As a result, improvements in the process parameter feedback, sensing and control, are necessary to successfully develop the automated control technology for the welding processes. Hence, several aspects of the GMAW-P process have been investigated in this study in order to improve

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39

Posinasetti, Praveen. "Process modelling and control of pulse gas metal arc welding of aluminum." Queensland University of Technology, 2007. http://eprints.qut.edu.au/16530/.

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Recent developments in materials and material joining [specifically Aluminum and Pulse Gas Metal Arc Welding (GMAW-P) technology] have increased the scope and extent of their areas of application. However, stern market demand for the improved weld quality necessitates the need for automation of the welding processes. As a result, improvements in the process parameter feedback, sensing and control, are necessary to successfully develop the automated control technology for the welding processes. Hence, several aspects of the GMAW-P process have been investigated in this study in order to improve

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40

Tipaji, Pradeep Kumar. "E-design tools for friction stir welding: cost estimation tool." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.mst.edu/thesis/pdf/Tipaji_09007dcc8043f642.pdf.

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Thesis (M.S.)--University of Missouri--Rolla, 2007.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed February 5, 2008) Includes bibliographical references (p. 29-31).

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41

Åstrand, Erik. "A Framework for optimised welding of fatigue loaded structures : Applied to gas metal arc welding of fillet welds." Doctoral thesis, Högskolan Väst, Forskningsmiljön produktionsteknik(PTW), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-9339.

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Welding is a key process for heavy steel structures, but it is also a weak link in the structure since fatigue fractures in welds are a common cause of failure. This thesis proposes several changes in order to improve the fatigue properties in acost effective way, enabling reduced weight and reduced cost of welded structures. The main idea is to adapt the weld requirements and welding procedures to the load conditions of the weld. This approach ensures that the main focus in the welding process is the critical characteristics of the welds fatigue life properties. The fatigue life critical prop

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42

Cho, Min Hyun. "Numerical simulation of arc welding process and its application." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1155741113.

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43

Jones, Steven Alan. "Refinement of TI-6%AL-4%V weld metal structures during gas-tungsten arc welding." Thesis, Open University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288987.

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44

da, Costa Pépe Nuno Vasco. "Advances in gas metal arc welding and application to corrosion resistant alloy pipes." Thesis, Cranfield University, 2010. http://dspace.lib.cranfield.ac.uk/handle/1826/4501.

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According to recent estimations, the construction of pipelines will continue to increase during the next thirty years, in particular as a result of oil and gas discoveries in remote locations. Significant advances in welding technology during the last ten years have potential to provide improvements in productivity, quality and structural integrity of pipe girth welds. In this thesis, several new processes Lincoln STT, Lincoln RapidArc, Fronius CMT, Fronius CMT-P and Kemppi FastROOT have been compared the first time to the GMAW-P to understand how these new waveforms operate for pipe welding.

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45

Gaal, Brian. "Development of a Coating Formulation Procedure for Ni-base Shielded Metal Arc Electrodes with Varying Core Wire Composition." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354481846.

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46

Hamed, Maien. "Vision-guided tracking of complex tree-dimensional seams for robotic gas metal arc welding." Thesis, Nelson Mandela Metropolitan University, 2011. http://hdl.handle.net/10948/1428.

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Automation of welding systems is often restricted by the requirements of spatial information of the seams to be welded. When this cannot be obtained from the design of the welded parts and maintained using accurate xturing, the use of a seam teaching or tracking system becomes necessary. Optical seam teaching and tracking systems have many advantages compared to systems implemented with other sensor families. Direct vision promises to be a viable strategy for implementing optical seam tracking, which has been mainly done with laser vision. The current work investigated direct vision as a strat

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47

Carvalho, G. C. "An adaptive control system for off-line programming in robotic gas metal arc welding." Thesis, Cranfield University, 1997. http://dspace.lib.cranfield.ac.uk/handle/1826/4597.

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The aim of this work was to develop an integration concept for using off-line programming in robotic gas metal arc welding of thin sheet steel. Off line-welding parameter optimization and on-line monitoring and adaptive control of process stability and torch-to-workpiece relative distance were used to ensure weld consistency. The concept developed included four main aspects: a) the use of a CAD system to design the workpiece; b) the use of a welding off-line programming system to design the welds, generate the welding parameters and to extract geometrical information from the CAD models to gen

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48

Walters, Jon D. "Microchemical analysis of non-metallic inclusions in C-MN steel shielded metal arc welds by analytical transmission electron microscopy." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA350613.

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49

Mortazavi, Seyed Bagher. "Inter-relationship between ultraviolet, ozone and hexavalent chromium in metal inert gas (MIG) welding process." Thesis, University of Bradford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324614.

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Welding is a common metal fabrication process within industry. Epidemiology suggests that welders as an occupational group demonstrate slight, but significant, increased risks of respiratory ill-health. This might be expected as welding processes often present high levels of occupational exposure to oxidising gasses and weld fumes which are often inadequately controlled through local exhaust ventilation or personal respiratory protection because of high costs and the burden of worker participation. Fundamental control strategies of occupational hygiene encourage development and use of engineer

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50

Siminski, Michael. "Weld path optimisation for rapid prototyping and wear replacement by robotic gas metal arc welding." Faculty of Engineering, 2003. http://ro.uow.edu.au/theses/399.

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Rapid prototyping (RP) is a large and rapidly growing industry with many different processes either under development or already available commercially. These processes offer fast and flexible production of objects from a wide range of materials. They vary from being able to produce only prototypes of products, through to being suitable for production of finished products ready for service. Rapid prototyping by robotic gas metal arc welding (GMAW) uses metal deposited by the GMAW process to build metal products with engineering properties suitable for service conditions. Wear replacement (WR)

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