Results 291 to 300 of about 211,132 (325)

Optimization of glass annealing

Glass and Ceramics, 1997
An algorithm was developed for calculating optimal glass annealing schedules for batch-type and continuous annealing units subject to the capabilities of a particular unit and the constraints imposed by temporary and residual stresses. The criterion chosen for the optimization is the throughput of the annealing unit which is in turn determined by the ...
V. G. Rubanov, A. G. Filatov
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Annealing control for sheet glass

Glass and Ceramics, 2012
Neutral net models of the annealing of a moving ribbon of sheet glass in a tunnel furnace are developed. The problem of controlling the annealing temperature regime is formulated. Simulation modeling is used to show that the control algorithm is more efficient than manual control of the annealing process. The implementation of a decision-making support
O. N. Shamysheva, R. I. Makarov
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Nonlinear Annealing of Glass

Journal of the American Ceramic Society, 1981
Transient as well as residual stresses were measured in laboratory experiments on annealing by nonlinear cooling schedules. The data on transient stresses, in particular, were incompatible with a classical view of annealing but they could be explained by a more recent model of annealing, in which account is taken of structural as well as stress ...
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The annealing and re-annealing of glass

Transactions of the Optical Society, 1924
In Part III of this paper the formulae deduced in the previous parts are applied to the case of heating glass under constant gradient and the temperature at which strain disappears is obtained, the effect of the known change in the coefficient of expansion on this temperature being discussed.
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Annealing in spin glasses

Journal of Magnetism and Magnetic Materials, 1980
Abstract It is suggested that the magnetic atoms of a spin glass are not randomly distributed in the lattice and may even migrate below the freezing temperature. This can explain why scaling is incorrect and also explains magnetic remanence.
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Laser annealing of phosphosilicate glass

Journal of Vacuum Science and Technology, 1981
Laser annealing of CVD layers of phosphosilicate glass (PSG) using a CO2 laser (10.6 μm wavelength) has been investigated. Evidence of plastic flow of the PSG caused by laser heating was obtained. Reduction of surface and bulk defects in the PSG layers was ascertained by measurement of scattering losses, before and after annealing, of He–Ne radiation ...
A. Naumaan, J. T. Boyd
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Fine Annealing of Optical Glass

Journal of the American Ceramic Society, 1954
Since the most important characteristic of optical glass is the uniformity of its refractive index, which is itself a function of fictive temperature, any fine annealing treatment must be such as to bring about substantial uniformity in fictive temperature. Methods of accomplishing this are reviewed.
H. R. LILLIE, H. N. RITLAND
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Laser annealing of Corning 7059 glass waveguides

Applied Optics, 1990
Corning 7059 glass thin film waveguides prepared by rf sputtering and vapor deposition were annealed with a CO(2) laser at various powers and scan velocities. Some reduction in optical loss was observed after laser annealing of the films. The results show a reduction in optical loss with the number of laser scans.
M C, Gupta, T, Strasser, R, Bellman
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