13 March 2007 An ultra-short pulse laser lathe for axisymmetric micromachining of explosives
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Engineers have devised a novel ultra-short pulse laser lathe system for bulk micromachining of axisymmetric features in energetic material samples with three-dimensional cylindrical geometry. One hundred twenty femtosecond pulses from an 800-nm Ti:sapphire laser were utilized to machine hexanitrostilbene (HNS) rods with diameters less than 200 micrometers and greater than 5:1 aspect ratio without ignition and subsequent bulk combustion or detonation. To date, this work represents the smallest energetic material rod structures fabricated by this technology. Results indicate that surface roughness is dependent upon rotation speed and feed rate. Valuable explosive nano-particles were discovered, collected, and analyzed as a byproduct of fabrication.
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Jeremy A. Palmer, Jeremy A. Palmer, Eric J. Welle, Eric J. Welle, } "An ultra-short pulse laser lathe for axisymmetric micromachining of explosives", Proc. SPIE 6460, Commercial and Biomedical Applications of Ultrafast Lasers VII, 646015 (13 March 2007); doi: 10.1117/12.696608; https://doi.org/10.1117/12.696608

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