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Submerged Bobbin Tool (SBT) Tunneling Technology

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Friction Stir Welding and Processing XII (TMS 2023)

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

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Abstract

Submerged bobbin tool (SBT) tunneling is a new friction stir processing (FSP) technique for making integral channels within malleable materials. Like a conventional bobbin tool (BT) for friction stir welding (FSW), an SBT toolset has two opposing shoulders spaced apart along the bobbin or probe section of the tool. Unlike a conventional BT, an SBT is used to form integral subsurface channels by passing the shoulder at the distal end of the probe through the workpiece during processing. Example uses of internal pathways are found in heat exchangers, cooling plates, and vacuum tools. Advance uses may include lessening weight and modifying the stiffness of structural components. A preliminary evaluation in AA6061-T6511 plates shows this special form of FSP has low process forces and is therefore capable of being deployed on CNC (computer numerical control) machining centers and friction stir-capable industrial robots as well as purpose-built FSP machines. Consequently, SBT tunneling holds potential use in a wide range of applications requiring curvilinear internal pathways for wiring, gases, and fluids, as well as internal spaces for the placement of powders and solid materials like composites.

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Acknowledgements

Funding for the initial development phase of the SBT tunneling process was provided through the Advanced Materials & Manufacturing Processes Institute (AMMPI) located at the Discovery Park campus of the University of North Texas (UNT). The technology transfer phase conducted during the summer of 2021 was funded by a grant from AMMPI. Submerged Bobbin Tool (SBT) Tunneling Technology is a patent pending process of UNT.

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Authors and Affiliations

  1. Materials Science & Engineering, College of Engineering, University of North Texas, Discovery Park, Denton, TX, 76207, USA

    Dwight A. Burford, Supreeth Gaddam, Anurag Gumaste & Rajiv S. Mishra

  2. Mechanical Engineering, College of Engineering, University of North Texas, Discovery Park, Denton, TX, 76207, USA

    Maurizio Manzo, Hector Siller, James Koonce III & Aleandro Saez

  3. Advanced Materials & Manufacturing Processes Institute (AMMPI), University of North Texas, Discovery Park, Denton, TX, 76207, USA

    Dwight A. Burford, Maurizio Manzo, Hector Siller & Rajiv S. Mishra

Authors
  1. Dwight A. Burford
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  2. Maurizio Manzo
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  3. Hector Siller
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  4. Supreeth Gaddam
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  5. Anurag Gumaste
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  6. James Koonce III
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  7. Aleandro Saez
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  8. Rajiv S. Mishra
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Corresponding author

Correspondence to Dwight A. Burford .

Editor information

Editors and Affiliations

  1. Brigham Young University, Provo, UT, USA

    Yuri Hovanski

  2. Tohoku University, Sendai, Japan

    Yutaka Sato

  3. Pacific Northwest National Laboratory, Richland, WA, USA

    Piyush Upadhyay

  4. Peter the Great St. Petersburg Polytechnic University, Saint Petersburg, Russia

    Anton A. Naumov

  5. The University of Alabama, Tuscaloosa, AL, USA

    Nilesh Kumar

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© 2023 The Minerals, Metals & Materials Society

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Burford, D.A. et al. (2023). Submerged Bobbin Tool (SBT) Tunneling Technology. In: Hovanski, Y., Sato, Y., Upadhyay, P., Naumov, A.A., Kumar, N. (eds) Friction Stir Welding and Processing XII. TMS 2023. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-22661-8_23

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