Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: The Effect of Laser Type and Power on the Efficiency of Industrial Cutting of Mild and Stainless Steels J. Manuf. Sci. Eng. 2015;138(3):031012-031012-6. doi:10.1115/1.4031190 Figure Legend: Relative cutting efficiency results for stainless steel (nitrogen cutting gas)

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: The Effect of Laser Type and Power on the Efficiency of Industrial Cutting of Mild and Stainless Steels J. Manuf. Sci. Eng. 2015;138(3):031012-031012-6. doi:10.1115/1.4031190 Figure Legend: Relative cutting efficiency results for mild steel cut with nitrogen assist gas

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: The Effect of Laser Type and Power on the Efficiency of Industrial Cutting of Mild and Stainless Steels J. Manuf. Sci. Eng. 2015;138(3):031012-031012-6. doi:10.1115/1.4031190 Figure Legend: Relative cutting efficiency results for mild steel cut with oxygen assist gas. (Note: the 3 mm sample cut with the 2 kW fiber laser and oxygen assist gas had the highest efficiency ofthe whole experimental set and is thus normalized to a value of 1.)

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: The Effect of Laser Type and Power on the Efficiency of Industrial Cutting of Mild and Stainless Steels J. Manuf. Sci. Eng. 2015;138(3):031012-031012-6. doi:10.1115/1.4031190 Figure Legend: Relative average kerf width measurements for samples cut by (a) fiber laser and (b) CO2 laser

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: The Effect of Laser Type and Power on the Efficiency of Industrial Cutting of Mild and Stainless Steels J. Manuf. Sci. Eng. 2015;138(3):031012-031012-6. doi:10.1115/1.4031190 Figure Legend: Relative cutting volume efficiency for stainless steel

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: The Effect of Laser Type and Power on the Efficiency of Industrial Cutting of Mild and Stainless Steels J. Manuf. Sci. Eng. 2015;138(3):031012-031012-6. doi:10.1115/1.4031190 Figure Legend: Relative cutting volume efficiency for mild steel

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: The Effect of Laser Type and Power on the Efficiency of Industrial Cutting of Mild and Stainless Steels J. Manuf. Sci. Eng. 2015;138(3):031012-031012-6. doi:10.1115/1.4031190 Figure Legend: During laser cutting the laser beam interacts with the cut front at a glancing angle [14]

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: The Effect of Laser Type and Power on the Efficiency of Industrial Cutting of Mild and Stainless Steels J. Manuf. Sci. Eng. 2015;138(3):031012-031012-6. doi:10.1115/1.4031190 Figure Legend: (a) Left: if the material is 1 mm thick and the beam is 200 μm wide then the cut front angle needs to be 11 deg if all the cutting front is to interact with the beam. (b) Right: if the cut front angle is changed, for example, to the 3 deg (the Brewster angle for CO2 lasers) then the absorptivity is high but most of the beam misses the cut front. (The beam and cut front geometry have, of course, been greatly simplified in this figure.)

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: The Effect of Laser Type and Power on the Efficiency of Industrial Cutting of Mild and Stainless Steels J. Manuf. Sci. Eng. 2015;138(3):031012-031012-6. doi:10.1115/1.4031190 Figure Legend: Absorptivity as a function of cut front/laser beam glancing angle (glancing angle = (90 deg − angle of incidence), see Fig. 7)

Date of download: 10/2/2017 Copyright © ASME. All rights reserved. From: The Effect of Laser Type and Power on the Efficiency of Industrial Cutting of Mild and Stainless Steels J. Manuf. Sci. Eng. 2015;138(3):031012-031012-6. doi:10.1115/1.4031190 Figure Legend: Multiple reflections in a fiber laser cut kerf