Relevant bibliographies by topics / Spot joining

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Spot joining'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Spot joining"

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FUJIMOTO, Mitsuo. "Friction Stir Spot Welding (Friction Spot Joining)." JOURNAL OF THE JAPAN WELDING SOCIETY 78, no. 6 (2009): 520–23. http://dx.doi.org/10.2207/jjws.78.520.

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Fujimoto, M., M. Inuzuka, S. Koga, and Y. Seta. "Development of Friction Spot Joining." Welding in the World 49, no. 3-4 (March 2005): 18–21. http://dx.doi.org/10.1007/bf03266470.

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FUKUHARA, Kazumi. "Friction Spot Joining (FSJ) Robot Technology." JOURNAL OF THE JAPAN WELDING SOCIETY 85, no. 7 (2016): 652–56. http://dx.doi.org/10.2207/jjws.85.652.

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Connolly, Christine. "Friction spot joining in aluminium car bodies." Industrial Robot: An International Journal 34, no. 1 (January 16, 2007): 17–20. http://dx.doi.org/10.1108/01439910710718397.

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PurposeTo review the capabilities of a new method of welding aluminium sheets for car body construction.Design/methodology/approachDescribes the friction spot joining technique, and how it differs from friction stir welding. Describes the tests carried out at the University of Warwick to compare this with other aluminium sheet joining techniques.FindingsCompared with resistance spot welding, this technique is simple, and physically and electromagnetically clean. Its low energy requirement per joint and low running costs give it advantages in joining thin materials, and eventual recycling is much easier than with self‐piercing riveting joints.Originality/valueDescribes the motivation behind the continuing development of an all‐aluminium joining technique, and compares spot friction joining with self‐pierce riveting and resistance spot welding.
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Sugimoto, Yukihiro, Kojiro Tanaka, and Katsuya Nishiguchi. "Spot joining of aluminum and dissimilar materials." Journal of Japan Institute of Light Metals 69, no. 2 (February 28, 2019): 74–80. http://dx.doi.org/10.2464/jilm.69.74.

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Ma, Ninshu, Atsushi Kunugi, Tei Hirashima, Katsumi Okubo, and Mitsuhiro Kamioka. "FEM simulation for friction spot joining process." Welding International 23, no. 1 (January 2009): 9–14. http://dx.doi.org/10.1080/09507110802348892.

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Herold, H., and K. Koppe. "New joining technique using resistance spot welding." Welding International 3, no. 1 (January 1989): 69–71. http://dx.doi.org/10.1080/09507118909446585.

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Manente André, Natalia, Jorge F. dos Santos, and Sergio T. Amancio-Filho. "Evaluation of Joint Formation and Mechanical Performance of the AA7075-T6/CFRP Spot Joints Produced by Frictional Heat." Materials 12, no. 6 (March 17, 2019): 891. http://dx.doi.org/10.3390/ma12060891.

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The development of lightweight hybrid metal–polymer structures has recently attracted interest from the transportation industry. Nevertheless, the possibility of joining metals and polymers or composites is still a great challenge. Friction Spot Joining (FSpJ) is a prize-winning friction-based joining technique for metal–polymer hybrid structures. The technology is environment-friendly and comprises very short joining cycles (2 to 8 s). In the current work, aluminum alloy 7075-T6 and carbon-fiber-reinforced polyphenylene sulfide (CF-PPS) friction spot joints were produced and evaluated for the first time in the literature. The spot joints were investigated in terms of microstructure, mechanical performance under quasi-static loading and failure mechanisms. Macro- and micro-mechanical interlocking were identified as the main bonding mechanism, along with adhesion forces as a result of the reconsolidated polymer layer. Moreover, the influence of the joining force on the mechanical performance of the joints was addressed. Ultimate lap shear forces up to 4068 ± 184 N were achieved in this study. A mixture of adhesive–cohesive failure mode was identified, while cohesive failure was dominant. Finally, a qualitative comparison with other state-of-the-art joining technologies for hybrid structures demonstrated that the friction spot joints eventually exhibit superior/similar strength than/to concurrent technologies and shorter joining times.
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Kaščák, Ľuboš, Emil Spišák, Janka Majerníková, and René Kubík. "Clinching of Dual-Phase Steels as an Alternative to Resistance Spot Welding." Materials Science Forum 919 (April 2018): 68–77. http://dx.doi.org/10.4028/www.scientific.net/msf.919.68.

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Resistance spot welding is the dominant method for joining the materials in the car body production. Progressive materials are being developed to improve the car’s fuel consumption and the safety of passengers as well. Advanced high strength dual-phase steels are such materials. Despite of the dominancy of resistance spot welding in car body production, innovative methods are being developed to reduce the joining time, process costs and improve the load-bearing capacity of a particular joint. Mechanical clinching is such process. The research focused on the evaluation of the possibility of clinching as an alternative method to the resistance spot welding. Experimental samples were prepared from dual-phase steel sheets DP600. The samples were tested by uniaxial tensile test, microhardness test and metallographic observations. Both joining methods have advantages and disadvantages which could destine them for specific utilization. Clinching joining is a progressive, fast and low-cost technique, but the joint’s load-bearing capacity is lower when compared to resistance spot weld.
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Černý, Michal, Petr Dostál, and Vojtěch Kumbár. "Visualization of Spot- welding Resistance." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 64, no. 1 (2016): 15–29. http://dx.doi.org/10.11118/actaun201664010015.

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This contribution devotes to monitoring of processes running during joining of steel sheets by incadescent so called point welding using non-destructive trial method – acoustic emission (AE). The joining process is detailed described within experimental measuring from the point of view of metallurgic effects runnig during weld creation (records obtained by means of AE method). It takes into consideration quality of joined steels within welding data of steel producer. Steel welding (determined by chemical composition) during mechanical verification and firmness of welds consider results of measurement AE and fracture effect of point joints. The measurement also demonstrates conclusion about connection of metallurgic processes with material wave effects (AE measurement) and their impact on firmness of joint at steel with guaranteed welding, difficult welding and at their potential combination.
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Dissertations / Theses on the topic "Spot joining"

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Miller, Christopher Carl Edward. "The joining of advanced high strength steels using resistance spot welding." Thesis, Swansea University, 2008. https://cronfa.swan.ac.uk/Record/cronfa42252.

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Weight reduction of the automotive body-in-white structure is increasingly necessary to improve fuel efficiency and reduce the carbon emissions and environmental impact of motor vehicles. This must be achieved without compromising the strength of the body-in-white structure. Steel manufacturers are continuing to develop advanced high strength steels (AHSS) which not only exhibit high strength and excellent energy absorbing characteristics but also retain a comparable degree of formability to low alloy grades. The specific properties of advanced high strength steels such as dual phase and TRIP are derived via the addition of specific alloying elements and careful control of thermomechanical processing routes in order to develop the required microstructures in the final product. The utilisation of such grades could yield significant reductions in the weight of body-in-white structures since they offer the automotive design engineer the opportunity to fabricate components out of thinner sheet whilst retaining or even improving on the structural strength and impact performance of components fabricated from thicker mild steel sheets. A major barrier to the widespread acceptance and implementation of AHSS by the automotive industry is the perceived complexities associated with the joining of these materials using resistance spot welding, which remains the dominant joining process in modem automobile construction. The complex alloy chemistries of these grades coupled with the extremely high cooling rates generated by the resistance welding process can give rise to weld microstructures with properties differing greatly from the parent microstructure. Of particular concern for automotive manufacturers is the potential for the formation of martensite in the weld nugget and heat affected zones, since its high hardness and low ductility are thought to result in poor weld performance. This research programme has investigated the weldability of six AHSS grades in comparison to low alloy grades typical of those currently used in the automotive industry, using a basic single pulse weld schedule. Simple modifications to welding parameters such as increasing electrode force and electrode tip diameter were investigated as well as the effects of advanced weld schedules on weld microstructures, microhardness and strength. The effect of joining selected advanced high strength steels to low carbon mild steel has also been studied.
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Siemssen, Brandon Raymond. "Development and Characterization of Friction Bit Joining: A New Solid State Spot Joining Technology Applied to Dissimilar Al/Steel Joints." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2425.pdf.

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Roos, Rollin M. "3-D temperature distributions in spot heating of a ceramic by a focused microwave source." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-09182008-063008/.

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Joesbury, Adam Michael. "New approaches to composite metal joining." Thesis, Cranfield University, 2015. http://dspace.lib.cranfield.ac.uk/handle/1826/10009.

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This thesis explores new methods for achieving load-carrying joints between the dissimilar materials of continuous fibre reinforced polymer matrix composites and structural metals. The new composite-to-metal joining methods investigated in this work exploit the metal-to-metal joining techniques of arc micro-welding, resistance spot welding, and metal filler brazing, to form novel micro-architectured metal adherends that can be used for enhanced composite-to-metal joining. Through a combination of equipment instrumentation and metallographic inspection of fabricated prototype joints, understanding is gained of how materials respond when processed by manufacturing techniques that have not previously been exploited for dissimilar material joining. Mechanical testing of prototype joints; both to ultimate loading strength and partial failure states, with subsequent inspection of specimens and comparative performances evaluation enabled joining performance characterisation of the new joining methods. Key results include: the identification of micropin reinforced adhesive joints to exhibit pseudo-ductile failure characteristics, resistance spot weld reinforcement of adhesive joints to boost bonding performance, and the use of a polymer infused metal foam to overcome difficulties of thermoplastic to metal adhesion. Through this work knowledge of how novel micro-architectures reacted under mechanical loading enabled insights to be gained into how perceived manufacturing defects can benefit joining performance. Such examples include, localised material weakness that lead to global pseudo-ductile failure behaviour, and low-strength secondary joining mechanisms boosting primary load transfer systems. By comparison of the diverse joining methods investigated in this work, trends were identified that suggest joining performance between the two dissimilar materials is improved by increasing the direct interaction between the composite reinforcement fibres and the metal structure. It is demonstrated that joining improvements are gained by forming mechanical connections between metals and composite precursory material before the final manufacturing process of the composite.
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Goushegir, Seyed Mohammad [Verfasser], and Sergio de Traglia Amancio [Akademischer Betreuer] Filho. "Friction spot joining of metal-composite hybrid structures / Seyed Mohammad Goushegir. Betreuer: Sergio de Traglia Amancio Filho." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2015. http://d-nb.info/1080864431/34.

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Goushegir, Seyed Mohammad [Verfasser], and Sergio [Akademischer Betreuer] Amancio. "Friction spot joining of metal-composite hybrid structures / Seyed Mohammad Goushegir. Betreuer: Sergio de Traglia Amancio Filho." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2015. http://nbn-resolving.de/urn:nbn:de:gbv:830-88213377.

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Manente, André Natália [Verfasser]. "Mechanical integrity and corrosion behavior of metal-composite hybrid joints produced with Friction Spot Joining / Natália Manente André." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2020. http://d-nb.info/1219141526/34.

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Al-Jader, Mohamad Aqeel. "Investigation of spot welding electrode tip wear and a non-destructive test of plastic joining in the automotive industry." Thesis, Liverpool John Moores University, 2014. http://researchonline.ljmu.ac.uk/4445/.

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The automotive industry is reliant on resistance spot-welding just as the sandwich making industry is reliant on bread. An automobile contains an average of 5000 welds. The quality of these welds is inspected and governed by certain standards. In order to maintain these standards there are different approaches to quality control. There are many factors that are accountable to a successful weld. The main factors are the voltage across the electrodes, the pressure applied by the electrodes at the interface of the metal sheets, the current applied, the surface condition and the composition of the sheets. The main problem in determining whether a weld complies with the standard is that the most reliable test is a destructive test, which not only destroys a potentially good weld, but it stalls the entire production line in order to perform the test. This is a process where the weld is taken apart sometimes with a chisel. Once the weld is dismantled the quality can be analysed. During the course of this thesis the chisel test, and other comparable tests were carried out. The following thesis presents an overview of electrode current selection and its variance over the lifetime of the electrode tip. This also describes the proposed analysis system for the selection of welding parameters for the spot welding process, as the electrode tip wears. Data from the practical tests is analysed using SORPAS Software Package in order to compare between real life practical tests, and theoretical simulations preformed in SORPAS. Reducing sparks caused during each weld is another requirement to prevent bumps on the bodywork that may cause further complications at later stages, this project will greatly improve productivity in the production line, since damaged tips can be identified and changed during the manufacturing process. The results show that at a pressure of 4.0bar productivity of welds that conform with the necessary British standards was increased three fold. A new type of non-invasive plastic bond testing is also investigated. This bond testing research was driven by the industrial need for a novel real-time non-destructive method of measuring both the quantity and type of material. Microwave sensors which monitor the change in permittivity of PF glue were developed for this purpose and successfully tested. These sensors have also been used to differentiate between different plastics.
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Fredriksson, Daniel, and Göransson Milou Carlfors. "Evaluation of Shunt Distancein Resistance Spot Welding." Thesis, KTH, Materialvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-277903.

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The purpose of this study was to generate a greater understanding of how the shunt distance affects the shunting phenomena which occurs when working with resistance spot welding (RSW). Shunting affects the quality of the weld and the goal of the study was to create guidelines for RSW to minimize its impact on the weld quality. In order to minimize waste from production and to reduce the welding time there is need for understanding of what the shunt effect depends on. To evaluate what impact the shunt distance will have on the weld, two different experiments were performed. In the first experiment, a one-dimensional welding lobe was manufactured for various materials and the current range was compared over three different shunt distances. The second experiment consisted of welding with a constant current on different shunt distances to investigate how this would impact the second weld performed in the welding sequence. A range of different steel grades and sheet thicknesses was used in the experiments to further explore what impact different material properties will have on the shunt effect. The result showed that the shunt distance has little impact on the acceptable weld-current range, with minor deviations. However, the shunt distance will affect the size of the shunted weld, which decreases as the shunt distance is reduced. Overall, the data collected in this study is not expansive enough to make guidelines that could be implemented in today´s industry. The phenomena of shunting require more data to fully be understood.
Syftet med denna studie var att skapa en större förståelse för hur shuntavståndet påverkar det shunt-fenomen som uppstår när man arbetar med punktsvetsning (RSW). Shuntning påverkar svetsens kvalitet och målet var att skapa riktlinjer för arbete med RSW för att minimera shunt-effektens påverkan på svetsen. I syfte att kunna minimera spill i produktionen samt att minska svetstiden krävs det förståelse av vad shunt effekten beror på. För att utvärdera vilken påverkan shuntavståndet kommer att ha på svetsen utfördes två olika experiment. I det första experimentet skapades en endimensionell svetslob för varje material och det genererade strömintervallet jämfördes över tre olika shuntavstånd. Det andra experimentet bestod av svetsning med en lika stor ström vid olika shuntavstånd för att undersöka hur detta skulle påverka den andra svetsen. En rad olika stålsorter och plåttjocklekar användes för att ytterligare se vilken påverkan dessa faktorer kom att ha på shunteffekten. Resultatet visade att shuntavståndet hade liten inverkan på det acceptabla svetsströmintervallet, med mindre avvikelser. Emellertid påverkar shuntavståndet storleken på den shuntade svetsen genom att storleken minskar när shuntavståndet minskas. Sammantaget räcker inte de uppgifter som samlats in i denna studie för att skapa riktlinjer som skulle kunna implementeras i dagens industri, utan det krävs mer data för att fullständigt kartlägga shunteffekten.
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Al-Zubaidy, Basem. "Material interactions in a novel Refill Friction Stir Spot Welding approach to joining Al-Al and Al-Mg automotive sheets." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/material-interactions-in-a-novel-refill-friction-stir-spot-welding-approach-to-joining-alal-and-almg-automotive-sheets(ccf8ed1d-e468-4a6c-b90e-ca868d3349e0).html.

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Refill Friction Stir Spot Welding (RFSSW) is a new solid-state joining technology, which is suitable for joining similar and dissimilar overlap sheets connections, particularly in aluminium and magnesium alloys. This welding method is expected to have wide applications in joining of body parts in the automotive industry. In the present study, RFSSW has been used to join 1.0 mm gauge sheets of two material combinations: similar AA6111-T4 automotive aluminium alloy joints and a dissimilar aluminium AA6111-T4 to magnesium AZ31-H24 alloy combinations. The performance of the joints was investigated in terms of the effect of the welding parameters (including tool rotation rate, sleeve plunge depth, and welding time etc.) to improve current understanding and allow optimisation of the process for short welding-cycles when joining similar and dissimilar light alloys. The results of the investigations on similar AA6111 welds showed the ability to use a wide window of process parameters that resulted in joints with a successfully refilled keyhole and flat weld surface, even when using a welding time as short as 0.5 s. The joints in the as-welded condition showed strengths as high as 4.2 kN, when using welding parameters of 1500 rpm, 1.0 mm with a range of welding times from 0.55 to 2.0 s. All joints showed a nugget pull-out failure mode when using a sleeve plunge depth of 0.8 mm or more, as a result of increasing the joint area. The strength of the joints further improved and reached peak loads of 5.15 and 6.43 kN after natural and artificial ageing, respectively, for welds produced using optimised welding parameters of a 2500 rpm tool rotation rate, a 1.5 s welding time and a 1.0 mm plunge. This improvement in strength resulted from the improvement in the local mechanical properties in the HAZ and other regions, which results from a minimal HAZ due to the rapid weld cycle and the re-precipitation of GPZs and clustering on natural ageing, or β on artificial ageing. A modification to the RFSSW process was developed in this project to solve the problems faced when dissimilar welding Mg to Al. This modified process involved adding a final brief pin plunge stage to consolidate refill defects and it was successful in producing nearly defect-free joints with improved mechanical properties, using a wide range of the process parameters. The average peak load of the joints increased with increasing tool rotation rate, to reach a maximum value at 2500 rpm due to eliminating the weld defects by increasing the material plasticity. However, increasing the tool rotation rate further to 2800 rpm led to a decrease in the average peak failure load due to eutectic melting at the weld interface. The optimum welding condition was thus found to be: 2500 rpm, 1.0 s, and 1.0 mm, which gave an average peak failure load of 2.4 kN and average fracture energy of 1.3 kN.mm. These values represent an improvement of about 10 % and 27 %, respectively, compared to welds produced with the conventional RFSSW process, and about 112 % and 78 % of the Mg-Mg similar joints produced using the same welding conditions. A FE model developed in this project was successful in increasing understanding of the behaviour of the RFSSW joints when subjected to lap tensile-shear loading. The stress and strain distribution in the modelled samples showed that the highest concentration occurring in the region of the confluence of the SZ with the two sheets. With increasing extension, these regions of highest stress and strain propagated to the outer surfaces of the two sheets and then annularly around the weld nugget. This annular ring of high strain concentration agreed well with the failure path and results in the full plug pull-out fracture mode shown by the experimentally tested samples. The predicted force-extension curves showed high agreement with the experimental results, especially when including the effect of the hook defect and correction of compliance in the experimental results.
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Book chapters on the topic "Spot joining"

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Goushegir, Seyed M., and Sergio T. Amancio-Filho. "Friction Spot Joining (FSpJ)." In Joining of Polymer-Metal Hybrid Structures, 61–99. Hoboken, NJ: John Wiley & Sons, Inc, 2017. http://dx.doi.org/10.1002/9781119429807.ch3.

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Ghazali, F. A., Z. Salleh, Yupiter H. P. Manurung, Y. M. Taib, Koay Mei Hyie, M. A. Ahamat, and S. H. Ahmad Hamidi. "Three Response Optimization of Spot-Welded Joint Using Taguchi Design and Response Surface Methodology Techniques." In The Advances in Joining Technology, 85–95. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-9041-7_7.

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Boldsaikhan, Enkhsaikhan, Shintaro Fukada, Mitsuo Fujimoto, Kenichi Kamimuki, Hideki Okada, Brent Duncan, Phuonghanh Bui, Michael Yeshiambel, Brian Brown, and Alan Handyside. "Refill Friction Stir Spot Joining for Aerospace Aluminum Alloys." In The Minerals, Metals & Materials Series, 237–46. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52383-5_23.

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Degen, Cassandra M., and Navaraj Gurung. "Fabrication of 3D Thermoplastic Sandwich Structures Utilizing Ultrasonic Spot Welding." In Joining Technologies for Composites and Dissimilar Materials, Volume 10, 49–58. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-42426-2_6.

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Awang, Mokhtar, Azman Ismail, and M. Aiman K. Zaman. "Effect of Process Parameters on the Strength of Swept Friction Stir Spot Welded Plates." In Machining, Joining and Modifications of Advanced Materials, 105–10. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1082-8_11.

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Chang, Woong Seong, Hyeon Jin Cho, Heung Ju Kim, and Chang Keun Chun. "Evaluation of Friction Spot Joining Weldability of Al Alloys for Automotive." In THERMEC 2006, 411–16. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-428-6.411.

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Degen, Cassandra M., Lidvin Kjerengtroen, Eirik Valseth, and Joseph R. Newkirk. "Impact and Lap Shear Properties of Ultrasonically Spot Welded Composite Lap Joints." In Joining Technologies for Composites and Dissimilar Materials, Volume 10, 59–69. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-42426-2_7.

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Ridges, C. S., M. P. Miles, Y. Hovanski, J. Peterson, and R. Steel. "Wear Testing of Friction Stir Spot Welding Tools for Joining of DP 980 Steel." In Friction Stir Welding and Processing VI, 97–103. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118062302.ch13.

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Laukant, H., C. Wallmann, M. Korte, and Uwe Glatzel. "Flux-Less Joining Technique of Aluminium with Zinc-Coated Steel Sheets by a Dual-Spot-Laser Beam." In Sheet Metal 2005, 163–70. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-972-5.163.

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Regensburg, Anna, René Schürer, Jan Ansgar Gerken, Helmut Steinberg, and Jean Pierre Bergmann. "A Novel Approach for Joining EN AW 1050 Stranded Wire and EN CW 004A Contact Elements by Friction Stir Spot Bonding." In The Minerals, Metals & Materials Series, 211–20. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52383-5_21.

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Conference papers on the topic "Spot joining"

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Okada, Hideki, Kenichi Kamimuki, Syuhei Yoshikawa, and Shintaro Fukada. "Refill Friction Spot Joining for Aerospace Application." In SAE 2015 AeroTech Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2015. http://dx.doi.org/10.4271/2015-01-2614.

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Boldsaikhan, Enkhsaikhan, Shintaro fukada, Mitsuo Fujimoto, Kenichi Kamimuki, Hideki Okada, Brent Duncan, Phuonghanh Bui, Michael Yeshiambel, Brian Brown, and Alan Handyside. "Refill Friction Stir Spot Joining Rivet Replacement Technology." In SAE 2016 Aerospace Manufacturing and Automated Fastening Conference & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2016. http://dx.doi.org/10.4271/2016-01-2130.

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Rathod, M. J., and R. L. Rithe. "Dissimilar Metal Joining by Using Friction Stir Spot Welding." In International Conference on Automotive Materials & Manufacturing 2014. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2014. http://dx.doi.org/10.4271/2014-28-0020.

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Briskham, Paul, Nicholas Blundell, Li Han, Richard Hewitt, Ken Young, and Douglas Boomer. "Comparison of Self-Pierce Riveting, Resistance Spot Welding and Spot Friction Joining for Aluminium Automotive Sheet." In SAE 2006 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2006. http://dx.doi.org/10.4271/2006-01-0774.

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Durandet, Y., W. Song, S. Blacket, and M. Brandt. "Spot joining of magnesium using laser assisted self-piercing riveting technology." In PICALO 2008: 3rd Pacific International Conference on Laser Materials Processing, Micro, Nano and Ultrafast Fabrication. Laser Institute of America, 2008. http://dx.doi.org/10.2351/1.5057030.

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Yang, R. J., Y. Rui, A. Mohammed, and G. Singh. "Spot Weld/Adhesive Pattern Optimization." In ASME 1996 Design Engineering Technical Conferences and Computers in Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-detc/dac-1478.

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Abstract This research presents a new application of topology optimization. Patterns for spot weld location and adhesive distribution when joining body panels are determined by using the topology optimization method. The density method which parameterizes the density of each finite element is employed and a sequential linear programming method is used for solving the topology optimization problem. In this study, a B-Pillar to Rail Joint exemplifies the design methodology. The results show that patterns for optimal spot weld location and adhesive distribution can be obtained for a maximum stiffness design with mass constraints.
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Lee, Tae Hwa, Pei-Chung Wang, S. Jack Hu, and Mihaela Banu. "Investigation of the Dynamic Response of a Multispot System at Joining Using Ultrasonic Welding." In ASME 2021 16th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/msec2021-64916.

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Abstract Ultrasonic welding is one of the most practical joining method for polymer composite materials and has been adapted in the aerospace and automotive industries. To effectively join polymer composite assemblies, it is critical to understand the dynamic response of the welding system so that sound heating generation and welding sequences in the ultrasonic welding of the assemblies can be properly obtained. This study presents a dynamic response model of a multi-spot configuration assembly using ultrasonic welding. Here, a dynamic model of joining a U-shaped carbon fiber reinforced thermoplastic composite part with a flat part is developed and analyzed through the ratio between the frequencies generated at different locations of the spot with respect to the edges of the assembly and the natural frequency. Finally, this ratio is correlated with the weld quality of the multiple spot configuration. Guidelines for designing multisport sequence are extracted. This study provides a method to design the welding sequence in ultrasonic welding of carbon fiber reinforced composites.
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8

Li, Wei, Daniel Cerjanec, and Gerald A. Grzadzinski. "Experimental Characterization of MFDC/CHC Resistance Spot Welding." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81293.

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Resistance spot welding is widely used for joining sheet metal materials in the automotive industry. Most of the existing resistance spot welding systems are single-phase AC-based, and with constant current control. The medium frequency DC (MFDC) system with constant heat control (CHC) is new technology in the resistance spot welding industry. This system promises dramatic improvement on the spot weld quality. However, many of the CHC features are still not known and need to be explored. This paper presents an experimental study on a new MFDC/CHC spot welding system. The goal is to characterize the MFDC/CHC welding process in terms of the process parameters, including the target energy level, force, and welding time. Real time process signals such as force, current, and tip voltage were also collected and analyzed to compare with the traditional spot welding process.
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9

Eggink, Derk H. D., Daniel F. Perez-Ramirez, and Marco W. Groll. "Automated joining element design by predicting spot-weld locations using 3D convolutional neural networks." In 2020 IEEE International Conference on Engineering, Technology and Innovation (ICE/ITMC). IEEE, 2020. http://dx.doi.org/10.1109/ice/itmc49519.2020.9198601.

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10

Walker, Luke, Ying Lu, Colleen Hilla, Wei Zhang, Byoung Ou, and Scott Hunter. "Effect of Insert Material on Microstructure and Strength of Aluminum Alloy to Zinc-Coated Steel Dissimilar Metal Weld." In ASME 2020 15th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/msec2020-8245.

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Abstract Ultrasonic interlayered resistance spot welding (Ulti-RSW) is a recently developed method for dissimilar metal joining of aluminum alloy to advanced high strength steel. It makes use of a thin insert (or interlayer) which is first ultrasonic spot welded to one of the two sheets. The second sheet is then resistance spot welded to the insert side of the first sheet. In the present study, two inserts were tested, 0.3-mm-thick AA3003-H14 and 0.25-mm-thick stainless steel 316, for joining 0.8-mm-thick Zn-coated (galvannealed) dual phase steel 590 to 1.2-mm-thinck aluminum AA6022-T4. The joint with the aluminum insert achieved a peak tensile-shear strength of 4.1kN and a fracture energy of 1.7J, while the joint with the stainless steel insert achieved a peak strength of 4.5kN and a fracture energy of 2.6J. Both welds were much stronger than a direct resistance spot weld between the two sheets which had a strength of 3.3kN and an inferior fracture energy of 0.87J. The increase in strength and fracture energy achieved using stainless steel insert over aluminum insert was discussed based on the nugget diameter and the interface microstructure.
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Reports on the topic "Spot joining"

1

Blundell, Nicholas, Li Han, Richard Hewitt, and Ken William Young. A Comparative Study Between Self-Pierce Riveting and Spot Friction Joining. Warrendale, PA: SAE International, May 2005. http://dx.doi.org/10.4271/2005-08-0204.

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