Laser based hybrid technique for civil engineering

Shigeki Muto; Kazuyoku Tei; Shigeru Yamaguchi; Kenzo Nanri; Tomoo Fujioka

doi:10.1117/12.816670

17 April 2009 Laser based hybrid technique for civil engineering

Shigeki Muto, Kazuyoku Tei, Shigeru Yamaguchi, Kenzo Nanri, Tomoo Fujioka

Proceedings Volume 7131, XVII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; 71311Y (2009) https://doi.org/10.1117/12.816670
Event: XVII International Symposium on Gas Flow and Chemical Lasers and High Power Lasers, 2008, Lisboa, Portugal

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.

Citation Download Citation

Shigeki Muto, Kazuyoku Tei, Shigeru Yamaguchi, Kenzo Nanri, and Tomoo Fujioka "Laser based hybrid technique for civil engineering", Proc. SPIE 7131, XVII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 71311Y (17 April 2009); https://doi.org/10.1117/12.816670

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