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Dissertations / Theses on the topic 'Hybrid welding'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Lamas, Javier. "Analysis of laser arc hybrid welding experiments." Licentiate thesis, Luleå tekniska universitet, Produkt- och produktionsutveckling, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26147.

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The thesis is about the analysis of experimental results on the laser arc hybrid welding (LAHW) process as well as about the methodology and tools behind. Due to the high potential on weld penetration and welding speed, the industrial importance of LAHW techniques has been increasing in the recent years. However the massive use of them is constrained because of high investment costs, complexity and novelty. These obstacles provoke a lack of experienced operators and they desire a base of knowledge related to optimal parameters to obtain good quality welds. In this scenario, understanding of th

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2

Ratanathavorn, Wallop. "Hybrid Joining of Aluminum to Thermoplastics with Friction Stir Welding." Thesis, KTH, Materialvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-93144.

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Hybrid structures including aluminum-thermoplastic and aluminum-reinforced thermoplastic composite are increasingly important in the near future innovations due to its lightweight and high strength-to-weight ratio. A critical point for metal-polymer application is that sound joining of these materials is difficult to achieve owing to a large difference in surface energy and dissimilar structure between metal and polymer. In practice, two major joining methods for hybrid structures are mechanical joining and adhesive bonding. However, there are some drawbacks of these conventional methods such

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3

Suder, Wojciech Jerzy. "Study of fundamental parameters in hybrid laser welding." Thesis, Cranfield University, 2011. http://dspace.lib.cranfield.ac.uk/handle/1826/7288.

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This thesis undertakes a study of laser welding in terms of basic laser material interaction parameters. This includes power density, interaction time and specific point energy. A detailed study of the correlation between the laser material interaction parameters and the observed weld bead profiles is carried out. The results show that the power density and the specific point energy control the depth of penetration, whilst the interaction time controls the weld width. These parameters uniquely characterise the response of the material to the imposed laser energy profile, which is independent o

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4

Ros, García Adrián, and Silva Luis Bujalance. "Laser welding for battery cells of hybrid vehicles." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-17588.

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The report is an overview article, as a result of our investigation at the field of laser welding applied to electromobility cells manufactured in an aluminium housing. This project was proposed by the University of Skövde in collaboration with ASSAR Centre. The key results presented are based on the study of the following parameters: laser type and power, shielding gases, welding modes, patterns and layout. The conclusions of the project define the final selection of each parameter in order to achieve minimum defects and optimal electrical performance by minimizing the contact resistance.

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5

Trautmann, Andreas. "Bifocal hybrid laser welding : a technology for welding of aluminium and zinc-coated steels /." München : Utz, 2009. http://opac.nebis.ch/cgi-bin/showAbstract.pl?u20=9783831608768.

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6

Trautmann, Andreas. "Bifocal hybrid laser welding a technology for welding of aluminium and zinc-coated steels." München Utz, 2008. http://d-nb.info/992520797/04.

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7

Wouters, Marc. "Hybrid laser-MIG welding : an investigation of geometrical considerations." Licentiate thesis, Luleå, 2005. http://epubl.luth.se/1402-1757/2005/82.

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8

Fischdick, Acuna Andres Fabricio. "Hybrid Laser Welding in API X65 and X70 Steels." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1462876479.

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9

Harris, I. D. "High-speed GMAW and laser GMAW hybrid welding of steel sheet." Thesis, Cranfield University, 2009. http://dspace.lib.cranfield.ac.uk/handle/1826/4571.

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Arc welding is the most widely used set of joining technologies in industry today. The automotive tier supplier network and light manufacturing are significant users of arc welding, particularly gas metal arc welding (GMAW) and pulsed GMAW (GMAW-P). For sheet metal welding the majority of welds are single pass fillet welds on T-butt, lap, or edge joints. A fundamental problem and limitation to the use of higher travel speeds in GMAW is the phenomenon of weld bead humping, a weld profile defect with a wavelike profile to the weld bead that has peaks and troughs in the longitudinal direction.

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10

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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11

Mjali, Kadephi Vuyolwethu. "Analysing the effect of FSP on MIG-laser hybrid welded 6082-T6 AA joints." Thesis, Nelson Mandela Metropolitan University, 2007. http://hdl.handle.net/10948/563.

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Friction Stir Processing (FSP) of aluminium alloys has been used to modify and improve the microstructure and relevant properties of fusion welded aluminium alloys. The effect of FSP on MIG-Laser Hybrid (MLH) welded aluminium alloy 6082-T6 mechanical and microstructural properties has been studied in this research. The FSP process was used on 6mm thick aluminium alloy plates and a tool was designed specifically for FSP, and the effect of varying speeds was analysed before the final FSP welds were made. The effect of FSP was analysed by optical microscopy, tensile, microhardness and fatigue tes

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12

Drápela, Petr. "Využití hybridní technologie Laser-TIG pro svařování hliníkových slitin." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-399437.

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Different problems arise from choice of setting technological parameters during welding of alluminium alloys. Choice of welding method, welding speed and material influence mechanical properties of welds. During welding of alluminium alloys come difficulties due to oxidation of thin surface layer of material. One of ways how to overcome this obtacle is to use hybrid laser-TIG welding method. In this diploma thesis is described influence of welding processes on mechanical properties of two alluminium alloys(EN AW-5754 H22, EN AW-6082 T6) and change in their microstructure during welding.

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13

Ratanathavorn, Wallop. "Development and evaluation of hybrid joining for metals to polymers using friction stir welding." Licentiate thesis, KTH, Industriell produktion, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-173232.

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Combinations of different materials are increasingly used in the modern engineering structures. The driving forces of this trend are rising fuel costs, global warming, customer demands and strict emission standards. Engineers and industries are forced to improve fuel economy and cut emissions by introducing newly design engines and lightweighting of structural components. The use of lightweight materials in the structures has proved successful to solve these problems in many industries especially automobile and aerospace. However, industry still lacks knowledge how to manufacture components fr

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14

Anantharaman, Satish. "RESIDUAL STRESS MEASUREMENT IN PLASTIC WELDED JOINS AND ITS APPLICATION TO THE DESIGN AND MANUFACTURE OF HYBRID ELECTRIC VEHICLE BATTERIES." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250695031.

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15

Hart, Brandon D. "Microstructural Characterization of Aluminum Cables and Ultrasonically Welded Terminals for Electric/Hybrid Electric Vehicles." Youngstown State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1403198707.

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16

Tolunguc, Burcu. "Microstructural And Mechanical Characterization Of Duplex Stainless Steel Grade 2205 Joined By Hybrid Plasma And Gas Metal Arc Welding." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614001/index.pdf.

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In the present study, the applicability of the hybrid plasma arc welding, in which a keyhole is responsible of deep penetration and a filler wire electrode supplies a high deposition rate, was examined. The microstructural evolutions in grade 2205 duplex stainless steel plates joined by keyhole and melt-in techniques were investigated. The specimens obtained from welded plates having thickness of 8 mm were examined via optical and scanning electron microscopy. Metallographic investigations were supported by X-ray diffraction and energy dispersed spectra analyses by characterizing the phases fo

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17

Herčík, Tomáš. "Svařitelnost kobaltových slitin hybridní metodou Laser-TIG." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417054.

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The master thesis summarizes the critical situation of the lack of a cobalt used in different industry branches. Due to its increasing price, it will not be possible to use in existing applications. One of these applications is production of cobalt alloys where the replacement of this element is impossible. This type of material keeps mechanical properties at high temperature. However, a suitable choice of technology can achieve at least its savings. In the field of welding, the alloys are joined without any use of an additional material. The possible solution could be the use of hybrid techno

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FIGUEIRÔA, Daniel Wallerstein. "Influência do teor de CO2 e do metal de adição na soldagem híbrida laser-GMAW em aço estrutural grau S355." Universidade Federal de Pernambuco, 2016. https://repositorio.ufpe.br/handle/123456789/19635.

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19

Brehovský, Patrik. "Svařování hlubokotažných ocelí s ochrannou vrstvou hybridní technologií Laser-TIG." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417119.

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The diploma thesis focuses on laser welding of extra deep-drawn steel sheet according to the standard WSS-M1A365-A14 with a protective zinc surface layer. A 0,9 mm thick steel sheet with a zinc layer with coating weight 50 g · m^-2 is welded by a hybrid welding method Laser-TIG. The laser, as the primary energy source, is used for welding the material. The arc, provided by a non-melting tungsten electrode, is used for preheating the material for melting and evaporation of the zinc layer. Based on the initial experiments, the magnitude of the laser power with the welding speed was chosen as a c

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20

Krejčí, Adam. "Svařování oceli 22MnB5 pomocí hybridní technologie Laser-TIG." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417452.

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This thesis deals with usage of hybrid technology Laser-TIG for welding of boron enhanced steel 22MnB5. This thesis evaluates the influence of preheating using technology of TIG arc welding to a weld quality in comparison with laser welds. In practical part of thesis there were 1,8 mm metal sheets of 22MnB5 welded. This metal sheet specimens were welded by using constant parameters of laser with varying parameters of TIG technology. There were 12 specimens of sheet metal created including 3 specimens using only laser and 9 specimens using Laser-TIG hybrid technology while varying magnitude of

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21

Dang, Weidong. "Finite element modelling of hybrid (spot welded/bonded) joints under service conditions." Thesis, Compiègne, 2015. http://www.theses.fr/2015COMP2187/document.

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Le soudage par point et le collage sont largement utilisés dans la jonction des tôles, telles que l'assemblage de caisses de voiture. Récemment, le soudage par point et le collage ont été combinés pour faire le joint hybride soudé-collé, qui est utilisé pour joindre les aciers à hautes résistances et améliorer la rigidité et la résistance aux chocs des corps de voiture. Dans l'industrie, l'évaluation de la conception avant prototype nécessite des modèles fiables de comportement en termes de prédiction des comportements mécaniques. Le modèle élément finis de joint soudé-collé est un nouveau déf

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22

Hedemalm, Markus, and Zebastian Hallsten. "Business Case - Implementation of Laser Technologies at Scania Ferruform : Welding- and cutting applications for the manufacturing of banjo parts." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-68994.

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Scania Ferruform AB is an independent affiliate of the truck- and bus manufacturer Scania AB which produces rear axle housings among other chassis components for said vehicles. The banjo part, i.e. the base of the rear axle housings undergoes processes which have issues both in terms of exceeded technical life span and insufficient production capacity. These three processes consist of both milling and welding operations. In order to resolve these issues the discussion of future investments arise. As this is discussed, the question whether alternative technologies could be of interest, specific

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23

Lermen, Richard Thomas. "Desenvolvimento de uma tocha de plasma híbrida para o processamento de materiais." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/37403.

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O principal objetivo deste trabalho foi apresentar o projeto, o desenvolvimento, a caracterização e a aplicação de um novo dispositivo híbrido gerador de plasma. Este dispositivo consiste em uma tocha de plasma híbrida, a qual é caracterizada pela formação simultânea de dois arcos plasmas, em apenas um dispositivo, que geram um jato de plasma com elevada densidade de energia. Esta tocha é proveniente da união de dois processos geradores de plasma: Plasma Não-Transferido e Propulsor Magnetoplasmadinâmico. A tocha de plasma híbrida desenvolvida no Laboratório de Soldagem & Técnicas Conexas foi s

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24

Tkachenko, Iuliia. "Contribution à la compréhension et à la modélisation des phénomènes physiques se produisant lors d'un assemblage par procédé hybride laser-arc." Thesis, Dijon, 2015. http://www.theses.fr/2015DIJOS012.

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Ces travaux présentent une recherche sur la physique du soudage hybride. La revue littéraire décrit les principaux processus physiques se produisant au cours de la combinaison Laser-arc, les principales réalisations et les problèmes rencontrés lors de l'analyse de ces processus. Les processus ont été étudiés pendant l'assemblage de matériaux de fortes épaisseurs. Deux configurations ont été utilisées. La première est le soudage d’un acier Superduplex en un seul passage, par Laser et arc distanciés. La seconde configuration est le soudage multipasse de l'acier 18MND5, où le faisceau Laser défoc

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25

Giusti, Ruggero. "Development of an Innovative Process Technology for the Manufacture of Structural Hybrid Components, Made by Forming and Overmolding of Thermoplastic Matrix Composites." Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3424899.

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Hybrid composite materials are even more used in order to answer to the lightweight requirements of the automotive industry. Reducing vehicle weight to reduce energy consumption and local CO2 emission is one of the most important goal required by the regional regulation of transport. On the contrary, the safety of the driver, of the passenger and of the pedestrian too is even more leading to increase the volumes of the vehicle. In order to improve the overall stiffness, strength and impact energy absorption of the body of a car, each part must absolve to different function and be designed with

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Alba, Diego Rafael. "Soldagem híbrida por difusão através de fricção (HFDB) para a união de tubos e flanges de alumínio." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/127863.

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Nas últimas décadas a soldagem em estado sólido vem se demonstrando como uma ótima alternativa perante os métodos tradicionais de união, os quais envolvem fusão dos materiais. O presente trabalho avalia a aplicação de um novo processo de união em estado sólido, a soldagem híbrida por difusão através de fricção (Hybrid Friction Diffusion Bonding - HFDB). O HFDB pode ser utilizado na união entre chapas finas ou também de chapas finas em substratos de materiais similares ou dissimilares. Através de calor e pressão os mecanismos de difusão são ativados gerando a união entre os materiais. Uma varia

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MAGGIORE, SOFIA. "Studio e caratterizzazione di sistemi adesivi polimerici da utilizzare in processi di giunzione innovativi." Doctoral thesis, Università degli studi di Genova, 2022. http://hdl.handle.net/11567/1073669.

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This study was dealt with the development of polymeric adhesive systems to be used in innovative junction processes based on friction stir welding (FSW) technology, and in particular on the hybrid technique FSW-bonding, for joining elements composed of metal alloys. The addition of suitable additives, such as inorganic fillers, to the most promising formulations was aimed at obtaining materials not only leading to a stronger adhesion between the phases, but also characterized by improved thermal properties and good resistance to oxidation and chemical attacks. Furthermore, due to their relevan

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28

Nendel, Klaus, Hans-Peter Heim, Christine Schubert, Annette Rüppel, and Brit Clauß. "Untersuchung zur Schweißbarkeit bei der Herstellung von Hybridbauteilen aus naturfaser-, holzfaser- und polymerfaserverstärkten Kunststoffen in Abhängigkeit von Rezeptur und äußeren Einflussfaktoren." Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-152080.

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Das Forschungsvorhaben liefert einen Beitrag zum Schweißen von Gleich- und Mischmaterialverbindungen aus Naturfaserverstärkten Kunststoffen (NFK) sowie deren Verarbeitung im Compoundieren und Spritzguss. Es wurde holzfasergefülltes (WPC) und flachsfasergefülltes (FFC) Polypropylen (PP) mit unterschiedlichen Füllgraden verwendet. Der Einsatz synthetisch-organsicher Fasern (PET-Fasern) im Compound zielte darauf ab, besonders die Schlagzähigkeit zu verbessern. Im Bereich des Urformens wurden Aussagen zur Verarbeitbarkeit, zu rezepturabhängigen Kurz- und Langzeiteigenschaften sowie Aussagen zur Da

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29

Thomä, Marco. "Wirkung von Leistungsultraschall auf das Prozessverhalten und die Bindungsmechanismen beim Rührreibschweißen von Aluminium/Stahl-Verbunden." Technische Universität Chemnitz, 2021. https://monarch.qucosa.de/id/qucosa%3A74493.

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Das ultraschallunterstützte Rührreibschweißen (USE-FSW) als innovatives Hybrid-Pressschweißverfahren zeichnet sich durch eine Reihe von Vorteilen aus, welche es für die Kombination artfremder metallischer Werkstoffe mit deutlich unterschiedlichem Schmelzpunkt ermöglichen, qualitativ hochwertigere Verbunde zu realisieren. Die vorliegende Arbeit thematisiert experimentelle Untersuchungen der Auswirkungen des zusätzlich eingekoppelten Leistungsultraschalls auf das Prozessverhalten und die Bindungsmechanismen sowie daraus resultierender mechanischer Verbundeigenschaften beim ultraschallunterstützt

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Khalil, Chady. "Développement du procédé de soudage par impulsion magnétique pour soudage hétérogène bimétallique et pour assemblage hybride métal / composite." Thesis, Ecole centrale de Nantes, 2018. http://www.theses.fr/2018ECDN0031.

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La réduction des émissions CO2 et l'amélioration de la performance restent toujours les grands objectifs de l'industrie automobile. Pour atteindre ces objectif, les équipementiers automobiles cherchent toujours à alléger les structures à travers l'emploie des matériaux hétérogènes qui a évolué au cours des dernières décennies où nous trouvons aujourd'hui à la fois des aciers doux, des aciers à très hautes résistances, des alliages légers tels que les alliages d'aluminium et de magnésium ainsi que des composites à fibre de verre ou de carbone. Cette tendance pose aujourd'hui plusieurs défis con

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Žák, Tomáš. "Využití hybridní technologie Laser-TIG pro svařování rozdílných materiálů používáných v energetice." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400985.

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Thesis is focused on analyzing the influence of preheating process parameters using electric arc from TIG torch during laser welding on weld properties of stainless steel and carbon steel with higher strength. In this thesis experiment was done in which metal sheets 3 mm thick from X12Cr13 and S355 steels were welded. Welding was done first with using only laser, then laser with TIG preheating and lastly laser with preheated material by induction heater. When TIG preheating was used than set welding current was changed on the power source. The welds were subsequently evaluated based on macrost

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Kachlíř, Jaromír. "Využití hybridní technologie Laser-TIG pro svařování bórem dopovaných vysokopevnostních ocelí." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-402499.

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This thesis deals with the usage of arc preheating for welding high strength boron enhanced steel 22MnB5 using hybrid technology known as laserTIG and also its impact on the final weld compared to welds welded by only the laser or the arc method. During the experiment I welded five sheets of the above mentioned steel 1,3 or 1,9 milimeters wide. Except for the welds fabricated by the laser and the TIG method was the only variable the electric current of the arc (I = 20, 40, or 60 A). Welds welded this way were compared based on strength limits measured by the tensile tests. Additionally were th

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Antes, Jiří. "Svařování galvanicky pozinkovaných plechů pomocí hybridní technologie Laser-TIG." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443206.

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ANTES, Jiří: Welding of galvanized sheets using hybrid Laser-TIG technology This master thesis deals with the welding of zinced deep drawing steel using Laser-TIG technology. The first section of the thesis describes the topic from the theoretical point of view, which includes analysis of welding technologies, influence of used material and application of diagnostic methods. The second part of the thesis is focused on monitoring of welding current impact for weld quality of two types of joints.

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Bukvic, Tomáš. "Svařování žárově pozinkovaných plechů pomocí hybridní technologie Laser-TIG." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443207.

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Thesis is focused on verification of suitability of Laser-TIG technology for penetrating welding of galvanized sheets, made of WSS M1A 365-A14 50G steel and DC01 steel. Electric arc functions here as a preheating for evaporation of zink layer. Electric current was chosen as a variable parameter of magnitudes 0, 20, 30 and 40 A. Test welds were made, which have been subjected to a tensile test and metallographic evaluation. The positive influence for electrolytically galvanized steel WSS M1A 365-A14 50G was registered and determination of optimal welding parameters was successful. The electric

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Novotný, Jan. "Svařování martenzitické korozivzdorné oceli pomocí hybridní technologie Laser - TIG." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417122.

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Theoretical part of this thesis includes overview of laser welding technology and possible combinations with arc welding methods for meeting desired properties of the weld. It also explains mechanical testing and metallographic examination on welds. The experimental part deals with optimisation of process parameters during welding of martensitic stainless steel, used in energetic industry using hybrid laser - TIG technology in regard of mechanical properties of the weld, its structure and proposal of technological parameters.

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Desmaison, Olivier. "Modélisation numérique d'un procédé de soudage hybride arc / laser en approche level set : application au soudage multi-passes de tôles d'acier de forte épaisseur." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2013. http://pastel.archives-ouvertes.fr/pastel-00982377.

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Le soudage hybride arc / laser représente une solution adéquate à l'assemblage de tôles d'acier de forte épaisseur. La présence d'une source laser en amont de la torche MIG permet d'accroître la productivité du procédé tout en assurant une excellente qualité de la soudure. Cependant la phénoménologie complexe de ce procédé multiphysique n'est pas encore totalement maîtrisée, ce qui motive le développement d'outils de simulation numérique. La présente étude s'est déroulée dans le cadre d'un projet multipartenaires "SISHYFE" (ANR Matériaux et Procédés).Dans ce but un modèle éléments finis 3D non

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Perulli, Patrizia. "Hybrid laser welding of stainless and high strength steels." Doctoral thesis, 2020. http://hdl.handle.net/11589/189333.

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In manufactory industry, welding is a joining technology with noticeable properties. Among fusion welding technologies, laser welding employs high power laser beam with high density. Laser beam welding debuted several decades later, after the invention of the laser in 1960, and has demonstrated to be especially useful in high-speed, automated welding. The laser beam produces a reduced melting zone, which has always been seen positive for the industrial products. Low thermal distortion, high speed and little heat input per unit of volume can be reached by fiber laser with some limitations like

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Lin, He-I., and 林和儀. "Development of Dual-beam Hybrid Welding Aluminum Alloy 6061 Process." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/39066517661959607069.

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碩士<br>國立高雄第一科技大學<br>機械與自動化工程研究所<br>99<br>CO2 laser welding of aluminum alloy is easily formation of holes, how to effectively improve the welding of aluminum alloys produced pores is extremely important. The MIG hybrid welding can be generated heat in order to improve the material''s surface structure which increase the absorption rate of materials to reduce the generation pores and prevent the emergence of the weld cracking turtle. Hybrid welding of CO2 laser and MIG, many of scholars had already proposed research experiments, and find ways to overcome the defects after welding, whi

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Chang, Yuan-feng, and 張源峰. "CO2 Laser-MIG Arc Hybrid Welding of Aluminum Alloy 6061." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/70673189222840999376.

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碩士<br>國立高雄第一科技大學<br>機械與自動化工程所<br>93<br>The combination of laser and MIG arc is internationally becoming a potentially useful technique after being researched for years abroad. The hybrid welding process has been demonstrated to offer the advantages of enabling to increase depth penetration ratio, welding speed, and decrease the susceptibility of hot cracking etc. However, this technique is still in its infancy in the domestic industrial applications. If the hybrid welding was successfully developed, it is expected to reduce the post-processing cost, enhance the weldmental quality, and eventual

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Wang, Wei-Lun, and 王偉倫. "CO2 Laser-TIG Arc Hybrid Welding of Aluminum Alloy 6061." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/30700517854813089647.

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碩士<br>國立高雄第一科技大學<br>機械與自動化工程所<br>93<br>Aluminum alloy is used broadly because it has many advantages, such as: light specific gravity, nice plasticity, processing easily, no low temperature brittleness and capable of being corrosion. Due to the reflection of CO2 laser goes up to 97%, the first question is how to raise the absorption rate of material effectively when CO2 laser welds aluminum alloy. Hybrid welding can improve the exterior construction of the material, increase the absorption rate of material, reduce the forming of pore and prevent the crack of the welding channel by the heat sou

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XU, JIA-WEN, and 許嘉文. "Research the Application of Hybrid Ultrasonic Vibration and Plasma Welding." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/68959756478431133018.

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碩士<br>國立聯合大學<br>機械工程學系碩士班<br>103<br>The objective of this study was to investigate effect of hybrid ultrasonic vibration and plasma welding on the microstructure and properties in A36 steel and SUS 304 stainless steel dissimilar welds. In order to investigate the influence of ultrasonic vibration toward the organization and quality of welding dissimilar metals, the ultrasonic vibration and 308L packing material metals have been employed during the welding process. The direction of ultrasonic vibration was perpendicular to the welding specimen. The research contents included plasma welding, mic

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Lu, Ming-chu, and 呂明珠. "Pulsed CO2 Laser- TIG Arc Hybrid Lap Welding of Magnesium Alloy AZ31B." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/c4gq5g.

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碩士<br>國立高雄第一科技大學<br>機械與自動化工程所<br>96<br>As products are becoming more portable and laser welding has been widely applied to the precision industry, the use of magnesium alloy has been more extensively on bicycles, automobiles, aeronautics, 3C products and more. To achieve for higher quality in manufacturing, many industries have replaced traditional welding by laser welding. Presently, some high-power CO2 laser has some pulse Nd:YAG functions and its output power is several or several decuples higher, with lower cost and processing parameters simpler than the Nd:YAG. The laser lap welding with

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Lin, Yi-chuan, and 林益全. "Effect of Curing Temperature on Properties, Solvent Welding and Microforming of Hybrid-albumen." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/99890127190377465106.

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碩士<br>淡江大學<br>機械工程學系<br>90<br>This paper discussed the effect of curing temperature (90℃, 120℃, 150℃) on tensile, three point bending, hardness, and spectrum analysis of homogenized hybrid-ovalbumin liquor. Experimental results showed that the numbers of non-saturated free radicals at wavenumber of 3298cm-1 and 2965cm-1 increased as its curing temperature rose. The transmittance increases and adsorption decreases as the wavelength increases. There is an absorptive peak at 440~450nm and the wavelength of the absorptive peak increases while the curing temperature rises. For the tensile properti

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Teng, Kuo-chin, and 鄧國欽. "Multi-objective Process Optimization of CO2 Laser + MIG Arc Hybrid Welding Aluminum Alloy 6061." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/q54u53.

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碩士<br>國立高雄第一科技大學<br>機械與自動化工程所<br>96<br>Porosity is commonly found in welding of aluminum alloy with CO2 laser, so it’s crucial to find a solution to porosity reduction for aluminum alloy welding. By utilizing the heat source of MIG to ameliorate surface structure of materials, material absorbance enhancement, porosity reduction and bead cracking prevention can all be achieved. Hybrid welding combing laser and MIG has been proposed early abroad. The most intractable part of abating weld defects lies in porosity, and it is proved in this experiment that clamp perfection and addition of two shiel

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Tuan, Chien-Chung, and 段健忠. "Multi-objective Process Optimization of CO2 Laser + MIG Arc Hybrid Welding Aluminum Alloy 6061." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/03710804153953212723.

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碩士<br>國立高雄第一科技大學<br>機械與自動化工程所<br>94<br>ABSTRACT Laser which stands for Light Amplific Ation by stimul Ated Emis Sionof Radation abstracts from the 1st letter of its definition. Hence, Laser is also defined as stimulating light. Until now, carbon dioxide laser is the highest output power consumption laser as well as it were developed in early 1964 A.D. It is applied comprehensively in several areas, such as material tooling, medical application, military weapon, and environment verification. The technique of MIG conjunction with Laser is potentially a kind of developing tooling technique, and p

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Wang, Chin-Jung, and 王進榮. "Multi-Objective Process Optimization of CO2 Laser + TIG Arc Hybrid Welding of Aluminum Alloy 6061." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/30131275892482489888.

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碩士<br>國立高雄第一科技大學<br>機械與自動化工程所<br>94<br>ABSTRACT In this paper, the welding of 6061 aluminum alloys was carried out using the combined sources of the CO2 laser beam and the TIG are welding without filler. There are 8 control factors such as the oxidizing film of aluminum alloy surface, current of TIG machine, power of laser, welding speed, assist gas flow rate, TIG current wave ratio, had been taken into consideration of this study. Those factors were introduced to analyze by the Taguchi methods coupled with the principal component analysis (PCA) to reduce the control factors to fewer principle

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Yan, Shaohua. "Multiscale study of the properties of hybrid laser-welded Al-Mg-Si alloy joints." Phd thesis, 2019. http://hdl.handle.net/1885/155214.

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Hybrid laser welding has been increasingly used in joining aluminium alloys. Due to the nature of hybrid laser welding, the welded joint made from Al alloys typically fractures in the fusion zone, indicating that the fusion zone is the softest part of the joint. Thus, modifying the microstructure in the fusion zone and analysing the according mechanical properties is both academically and industrially of interest. In the first part of this research, it was focused on altering the microstructure of the fusion zone using two different filling materials, Al

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Lin, Ming-hong, and 林銘宏. "Multi-objective Process Optimization of Pulsed CO2 Laser-TIG Arc Hybrid Lap Welding of Magnesium Alloy AZ31B." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/cxyr7t.

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碩士<br>國立高雄第一科技大學<br>機械與自動化工程所<br>96<br>As the advancement of technology, the quality of human life continues to improve significantly. Additionally, the so-called BRICs are growing up very fast in their economies. These factors make the low-weight and high-strength metals play a more and more important role in the industry, particularly the magnesium alloy. Because of its good plasticity, easy processing, high damping and good electromagnetic shielding effects, it has been widely applied in automobiles, aeronautics, and 3C product industries. The magnesium alloy with a high reflectivity to CO2

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Thao, Ngo Thi, and 吳文草. "BFGS and Hybrid Spline Difference Method for Determining the Heat Generation and Temperature in Ultrasonic Welding Problems." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/21481350164541588641.

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博士<br>逢甲大學<br>機械與航空工程博士學位學程<br>104<br>The Hybrid Spline Difference Method is developed to solve the direct nonlinear heat transfer problem in ultrasonic welding process. Verification by welding problem finds that the presented method can simplify the complex determination process of traditional spline theory. Interestingly, its concept is very similar to that of finite difference method; however, its numerical accuracy is significantly enhanced. Thus, not only the hybrid spline difference method presented in this thesis has a simple computational process, but also it can be strongly potential

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CHIANG, PIN-HSUAN, and 江品璇. "Preparation and Optoelectric Properties of Few-Layer Reduced Graphene Oxide Conjugated with Self Welding Silver Nanowire Junctions as Flexible Transparent Conducting Hybrid Films." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/m676a4.

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碩士<br>國立高雄應用科技大學<br>化學工程與材料工程系博碩士班<br>106<br>In this study, flexible transparent conducting hybrid films (TCFs) based on few layer reduced graphene oxide (FrGO) conjugated with hydrolyzed-polyethylene terephthalate (H-PET)-based self-welding (SW) commercial silver nanowires (AgNWs) were fabricated by water-bath assisted dipping coating method. H-PET-based SW-AgNW networks were controlled by the mirror silver reaction with different reaction rates and followed by dip-coated on the H-PET film. Few layer graphene oxide (FGO) were prepared by modified Hummers and low speed centrifuge method. FrGO

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