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Comparison of Cut Path Deviation Between CO2 and Diode Lasers in Float-Glass Cutting

S. Nisar, S.Z. Khan, M. Ali, L. Li, M.A. Sheikh

Journal of Russian Laser Research. 2014;35(2):182-192.

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Abstract

Laser cutting of glass using the controlled fracture technique leads to cut path deviation at the leading and trailing edges of the float glass sheet. In this technique, thermal stresses are used to induce the crack, and the material is separated along the cutting path by extending the crack. We show that the cut path deviation is partly due to high magnitudes of thermal stresses generated near the sheet edges. The absorption of intense radiation from the CO2 and diode laser beams in the glass causes local temperature increases and consequently generates different thermal fields and stress distributions due to surface and volumetric heat absorption. In this paper, we report the effect of the CO2 and diode laser wavelength interaction with the float glass and its effect on the magnitudes of thermal stresses generated near the edges of the glass sheet. We simulate the distribution of the thermal stress and temperature using finite-element analysis software Abaqus and validate it against the experimental data. We show that the CO2 laser produces a lower surface quality and a larger cut path deviation at the leading and trailing edges of the glass sheet as compared to the diode laser.

Keyword(s)

float glass volumetric heat absorption cut path deviation

Bibliographic metadata

Type of resource:
Content type:
Publication status:
Published
Publication type:
Publication form:
Published date:
Language:
eng
ISSN:
Volume:
35
Issue:
2
Start page:
182
End page:
192
Total:
10
Pagination:
182-192
Digital Object Identifier:
10.1007/s10946-014-9412-9
Attached files embargo period:
Immediate release
Attached files release date:
28th January, 2015
Access state:
Active

Record metadata

Manchester eScholar ID:
uk-ac-man-scw:255399
Created by:
Li, Lin
Created:
28th January, 2015, 20:55:00
Last modified by:
Sokolovski, Vera
Last modified:
18th August, 2015, 13:02:05

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