scholarly journals Automated glass fiber drawing

1989 ◽  
Author(s):  
W. L. Smith
Keyword(s):  
Glass Fiber ◽  
Fiber Drawing

Analytic Study of Non-Newtonian Double Layer Coating Liquid Flows in Optical Fiber Manufacturing

2012 ◽  
Vol 224 ◽  
pp. 260-263 ◽  
Author(s):  
Kyoung Jin Kim ◽  
Ho Sang Kwak
Keyword(s):  
Optical Fiber ◽  
Glass Fiber ◽  
Double Layer ◽  
Optical Fibers ◽  
Newtonian Fluid ◽  
Liquid Flow ◽  
Analytic Study ◽  
Fiber Drawing ◽  
Drawing Speed ◽  
Layer Coating

In mass manufacturing of optical fibers, the wet-on-wet polymer resin coating is an efficient process for applying double layer coatings on the glass fiber. This paper presents an analytic study on the behavior of non-Newtonian polymer resins in the double layer coating liquid flow inside a secondary coating die of the optical fiber coating applicator. Based the approximations of fully developed laminar flow and the power law model of non-Newtonian fluid, the coating liquid flow of two immiscible resin layers is modeled for the simplified geometry of capillary annulus, where the surface of glass fiber moves at high fiber drawing speed. The effects of important parameters such as non-Newtonian fluid properties, the coating die size, and fiber drawing speed are investigated on the resin velocity profiles and secondary coating layer thickness.

Optimization Of Fluoride Glass Fiber Drawing With Respect To Mechanical Strength

1987 ◽  
Author(s):  
H. W. Schneider ◽  
A. Schoberth ◽  
A. Staudt ◽  
Ch. Gerndt
Keyword(s):  
Mechanical Strength ◽  
Glass Fiber ◽  
Fluoride Glass ◽  
Fiber Drawing

Asymptotic equations for the terminal phase of glass fiber drawing and their analysis

2010 ◽  
Vol 11 (6) ◽  
pp. 4533-4545 ◽  
Author(s):  
Thierry Clopeau ◽  
Angiolo Farina ◽  
Antonio Fasano ◽  
Andro Mikelić
Keyword(s):  
Glass Fiber ◽  
Terminal Phase ◽  
Fiber Drawing ◽  
Asymptotic Equations

Helium-Injection Cooling of Hot Silica Glass Fiber in Optical Fiber Manufacturing System

2012 ◽  
Vol 157-158 ◽  
pp. 1301-1304
Author(s):  
Dong Joo Kim ◽  
Il Seok Oh ◽  
Ho Sang Kwak ◽  
Kyoung Jin Kim
Keyword(s):  
Optical Fiber ◽  
Glass Fiber ◽  
Glass Fibers ◽  
Air Entrainment ◽  
Injection Rate ◽  
Fiber Drawing ◽  
Cooling Effectiveness ◽  
Drawing Speed ◽  
Cooling Unit ◽  
Fiber Manufacturing

In an optical fiber manufacturing process, glass fibers drawn from the heated silica preform in the furnace should be sufficiently cooled down close to ambient temperature. As the fiber drawing speed continues to increase for better manufacturing productivity, the glass fiber cooling becomes more difficult and the use of helium injection into the glass fiber cooling unit is required to greatly enhance the fiber cooling effectiveness. The present study numerically simulates the flowfield and heat transfer phenomena on the glass fiber cooling in order to investigate the effects of helium injection and fiber drawing speed on the fiber cooling effectiveness of glass cooling unit. The results found that the amount of air entrainment at the unit inlet is the significant factor that decides the cooling effectiveness by significantly lowering the helium purity in cooling gas. Also, at a given fiber drawing speed, there exists a critical helium injection rate and the fiber cooling does not improve any more, even if the helium injection rate increases above this critical value.

Process Design of Glass Fiber Drawing Combining Physics, Statistics, and Validation

2009 ◽  
Author(s):  
Simon Rekhson ◽  
James Leonard ◽  
Zhongzhouh Chen ◽  
Umashankar Sistu ◽  
Akash Shah ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Process Design ◽  
Fiber Drawing

scholarly journals Newtonian glass fiber drawing: Chaotic variation of the cross-sectional radius

1999 ◽  
Vol 11 (11) ◽  
pp. 3201-3208 ◽  
Author(s):  
A. L. Yarin ◽  
P. Gospodinov ◽  
O. Gottlieb ◽  
M. D. Graham
Keyword(s):  
Glass Fiber ◽  
Fiber Drawing ◽  
Cross Sectional ◽  
The Cross

scholarly journals Numerical modeling and analysis of glass fiber drawing process from large sized silica preform

2017 ◽  
Vol 12 (2) ◽  
pp. JTST0030-JTST0030
Author(s):  
Yong Ki KIM ◽  
Jin Su CHOI ◽  
Ho Sang KWAK ◽  
Kyoungjin KIM
Keyword(s):  
Numerical Modeling ◽  
Glass Fiber ◽  
Drawing Process ◽  
Fiber Drawing ◽  
Modeling And Analysis
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