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Transient Temperature Measurement in Nanosecond Pulsed Laser Micro Drilling by Using Micro Thin Film Thermocouples

[+] Author Affiliations
Hongseok Choi, Xiaochun Li

University of Wisconsin at Madison

Paper No. IMECE2005-81157, pp. 499-502; 4 pages
doi:10.1115/IMECE2005-81157
From:
  • ASME 2005 International Mechanical Engineering Congress and Exposition
  • Manufacturing Engineering and Materials Handling, Parts A and B
  • Orlando, Florida, USA, November 5 – 11, 2005
  • Conference Sponsors: Manufacturing Engineering Division and Materials Handling Division
  • ISBN: 0-7918-4223-1 | eISBN: 0-7918-3769-6
  • Copyright © 2005 by ASME

abstract

It is of fundamental interest to investigate the complicated and transient thermal phenomena near the nanosecond pulsed laser-material interaction region. While numerous analytic and numerical models have been developed, little experimental results are available for a solid understanding of transient thermal phenomena in nanosecond pulsed laser micro drilling. In this paper, micro thin film thermocouples were fabricated on electroplated nickel substrates to study the transient temperature variations during laser micro drilling. Transient temperatures were successfully measured with superior temporal and spatial resolutions for the fundamental study of the nanosecond pulsed laser micro drilling. The in-situ measured data can be used to improve existing analytical and numerical models.

Copyright © 2005 by ASME

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