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Proceedings Paper

Laser based hybrid technique for civil engineering
Author(s): Shigeki Muto; Kazuyoku Tei; Shigeru Yamaguchi; Kenzo Nanri; Tomoo Fujioka
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Paper Abstract

A laser-based hybrid technique is shown to be effective for cutting concrete and drilling rock. Experimental conditions used included a laser power of 1-10 kW, 10 mm laser beam diameter and 1.25-50 mm/s scanning speed. The results of surface scanning tests and 100 mm deep cut tests indicated that the shortest operation time was about 3.5 hr/m2 for plain concrete and 4.5 hr/m2 for heavy concrete. The specific energy for the rocks (the amount of energy required to remove a unit volume of rock), which were granite and sandstone, was as same as that for heavy concrete. Thermal decomposition was observed for limestone. The specific energy of limestone was more than 1.5 times higher than that for granite and sandstone.

Paper Details

Date Published: 18 April 2009
PDF: 8 pages
Proc. SPIE 7131, XVII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 71311Y (18 April 2009); doi: 10.1117/12.816670
Show Author Affiliations
Shigeki Muto, Tokai Univ. (Japan)
Institute for Applied Optics (Japan)
Kazuyoku Tei, Tokai Univ. (Japan)
Institute for Applied Optics (Japan)
Shigeru Yamaguchi, Tokai Univ. (Japan)
Kenzo Nanri, Tokai Univ. (Japan)
Tomoo Fujioka, Tokai Univ. (Japan)
Institute for Applied Optics (Japan)


Published in SPIE Proceedings Vol. 7131:
XVII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Rui Vilar; Olinda Conde; Marta Fajardo; Luís O. Silva; Margarida Pires; Andrei Utkin, Editor(s)

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