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Jig-free laser welding of Eagle XG glasses by using a picosecond pulsed laser

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Abstract

We have performed the jig-free laser welding on the alkaline earth boro-aluminosilicate glass (Eagle XG, Corning), which is commonly used in the display devices, by using a picosecond pulsed laser. Two sheets of Eagle XG glasses with 0.5 mm thickness each were placed one on top of the other. Due to the jig-free laser welding, there was a very thin air gap between the two glasses, and the experiment proceeded by line scanning. The welding performance was evaluated by observing the optical images from the top view and the bottom view and comparing the line images. We could bond the two glass surfaces on the laser spot, and achieve the successful welding of such glasses in the scanning speeds from 10 mm/s to 50 mm/s with the laser irradiance from 50 TW/cm2(500 J/cm2) to 83 TW/cm2 (830 J/cm2). We demonstrated the feasibility of jig-free laser welding on the Eagle XG glass with the welding strength up to 50 MPa.

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Acknowledgments

This research was conducted under the industrial infrastructure program of laser industry support, which is funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea, N0000598).

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Authors and Affiliations

  1. Graduate School, Department of Mechanical Engineering, Kyungpook National University, Daegu, 41566, Korea

    Seung Sik Ham

  2. School of Industrial Technology, Division of Mechanical Engineering Technology, Yeungnam University, Daegu, 42415, Korea

    Chang Hwan Kim

  3. Laser Application Center, Kyungpook National University, Daegu, 41061, Korea

    Soo Ho Choi, Jong Hoon Lee, Clare C. Byeon & Ho Lee

  4. School of Mechanical Engineering, Kyungpook National University, Daegu, 41566, Korea

    Yong Joong Lee, Clare C. Byeon & Ho Lee

Authors
  1. Seung Sik Ham
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  2. Chang Hwan Kim
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  3. Soo Ho Choi
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  4. Jong Hoon Lee
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  5. Yong Joong Lee
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  6. Clare C. Byeon
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  7. Ho Lee
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Corresponding authors

Correspondence to Clare C. Byeon or Ho Lee.

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Recommended by Associate Editor Yongho Jeon

Seung Sik Ham is currently a graduate student working toward his Ph.D. at Kyungpook National University. His research interests are ultrashort pulsed laser machining and display application.

Clare Chisu Byeon is a Professor in School of Mechanical Engineering at Kyungpook National University. His research interests are laser applications, photonics, nanomaterials and semiconductor materials, and optical characterization and measurement methods.

Ho Lee is working at School of Mechanical Engineering, Kyungpook National University. He is currently a Full Professor. His current research interests are laser machining, confocal microscope, and two-photon microscope.

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Ham, S.S., Kim, C.H., Choi, S.H. et al. Jig-free laser welding of Eagle XG glasses by using a picosecond pulsed laser. J Mech Sci Technol 33, 2825–2832 (2019). https://doi.org/10.1007/s12206-019-0529-1

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  • DOI: https://doi.org/10.1007/s12206-019-0529-1

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