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Proceedings Paper

High-speed laser diagnostics at 1.06 um with simultaneous percussion hole drilling of aerospace materials
Author(s): Philip R. Cunningham; Marc Fahndrich; Jeffrey Wade Oliver; Thomas S. Bertlesen; Richard W. Frye
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Paper Abstract

A diagnostic system was designed, fabricated and tested for measuring a Nd:YAG laser's performance using a five-axis laser machining center. Far field beam profile, beam quality, beam tilt and beam power were measured at high frequencies while holes were simultaneously percussion drilled in aerospace materials used in gas turbine engines. The system allowed determination of effects of varying laser and machine operating parameters on materials processing performance. Variations were made in laser pulse length, pulse energy, pulse repetition rate, drilling standoff distances from part, incident angles and other parameters. Measured laser beam performance was compared directly with drilled holes. A number of identically drilled holes provided hole-to-hole variance, allowing the machine center operators to optimize materials processing by tuning the laser operating parameters. The results also gave the operator additional understanding of variations of processing performance.

Paper Details

Date Published: 6 June 1993
PDF: 26 pages
Proc. SPIE 1871, Intense Laser Beams and Applications, (6 June 1993); doi: 10.1117/12.145234
Show Author Affiliations
Philip R. Cunningham, United Technologies Industrial Lasers (United States)
Marc Fahndrich, Pratt & Whitney Canada, Inc. (Canada)
Jeffrey Wade Oliver, United Technologies Optical Systems (United States)
Thomas S. Bertlesen, United Technologies Research Ctr. (United States)
Richard W. Frye, United Technologies Research Ctr. (United States)

Published in SPIE Proceedings Vol. 1871:
Intense Laser Beams and Applications
William E. McDermott, Editor(s)

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