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Design Factors in Laser Driven Impact Welding

Peck, Jackson
http://rave.ohiolink.edu/etdc/view?acc_num=osu1556879640891786

Abstract Details

2019, Master of Science, Ohio State University, Materials Science and Engineering.
Laser impact welding is a relatively new technology that combines the existing technologies of impact welding and laser-driven flyers to create solid state welds between a thin metallic flyer and a target. A high power laser pulse is fired through a transparent confinement layer and onto an ablative layer that is directly attached to the flyer. This ablative layer absorbs the laser energy and is vaporized creating a plasma that is in turn confined by the transparent confinement layer directing the pressure into the flyer. This drives the flyer to velocities of hundreds to thousands of meters per second in under a microsecond. When the flyer impacts the target if the velocity is high enough and the angle between the two is sufficient, the two surfaces of the materials will be cleaned of their oxides, which in turn allows for a solid-state metallurgical bond to be made between the flyer and target. By controlling the laser parameters, much thicker flyers than previously reported can be welded. Using a 24J 65ns pulse, a 305µm 3003Al flyer was welded to 6061-T6Al. These welds were extremely strong and failed through the 3003Al flyer in all cases when peeled. To further push laser impact welding towards a scalable industrial process, liquid backing layers such as water and glycerin solution were studied for their effect on flyer impact velocity. Impact velocity was measured using Photon Doppler Velocimetry and it was determined that while both are suitable for welding, water would be the preferred backing in an industrial application due to its ease of use and low cost. Potential applications of laser impact welding, such as beverage can manufacturing, are also outlined and discussed.
Glenn Daehn (Advisor)
Xun Liu (Committee Member)
55 p.
Materials Science
laser impact welding; solid state welding; dissimilar welding; dissimilar joining; beverage can

Recommended Citations

Citations

  • Peck, J. (2019). Design Factors in Laser Driven Impact Welding [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1556879640891786

    APA Style (7th edition)

  • Peck, Jackson. Design Factors in Laser Driven Impact Welding. 2019. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1556879640891786.

    MLA Style (8th edition)

  • Peck, Jackson. "Design Factors in Laser Driven Impact Welding." Master's thesis, Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1556879640891786

    Chicago Manual of Style (17th edition)

osu1556879640891786
313
© 2019, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.