High-speed laser diagnostics at 1.06 um with simultaneous percussion hole drilling of aerospace materials

Philip R. Cunningham; Marc Fahndrich; Jeffrey Wade Oliver; Thomas S. Bertlesen; Richard W. Frye

doi:10.1117/12.145234

6 June 1993 High-speed laser diagnostics at 1.06 um with simultaneous percussion hole drilling of aerospace materials

Philip R. Cunningham, Marc Fahndrich, Jeffrey Wade Oliver, Thomas S. Bertlesen, Richard W. Frye

Proceedings Volume 1871, Intense Laser Beams and Applications; (1993) https://doi.org/10.1117/12.145234
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

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.

Citation Download Citation

Philip R. Cunningham, Marc Fahndrich, Jeffrey Wade Oliver, Thomas S. Bertlesen, and Richard W. Frye "High-speed laser diagnostics at 1.06 um with simultaneous percussion hole drilling of aerospace materials", Proc. SPIE 1871, Intense Laser Beams and Applications, (6 June 1993); https://doi.org/10.1117/12.145234

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