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TECHNICAL PAPERS: Heat Transfer in Manufacturing

Transient Thermal Modeling of In-Situ Curing During Tape Winding of Composite Cylinders

[+] Author and Article Information
Jonghyun Kim, Tess J. Moon, John R. Howell

Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712

J. Heat Transfer 125(1), 137-146 (Jan 29, 2003) (10 pages) doi:10.1115/1.1527912 History: Received August 24, 2001; Revised September 06, 2002; Online January 29, 2003
Copyright © 2003 by ASME
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References

Figures

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Two-dimensional computational domain, composed of an isotropic mandrel and orthotropic, continuously wound, composite cylinder. Uniform radially-inward IR heating and negligible axial energy losses are assumed. Material accretion occurs at an effective laydown point θl(τ) (Eq. (14)) in advance of the physical knit point at θ=0; radiant preheating of the incoming tape occurs between θl(τ)≤θ≤0.
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Comparison of the temperature distributions in the top 20 layers of a composite cylinder wound from AS4/3501-6 prepreg predicted by the quasi-steady state 18 and current, fully transient approaches. Integer number on the x axis label represents the layer number. (Winding speed, 10 rpm; IR lamp heat flux, 48.6 kW/m2 ; Initial mandrel temperature, 480 K; Mandrel diameter, 12.7 cm (5 in)).
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Temperature evolutions during winding in the bottom, middle and top AS4/3501-6 prepreg layers and stainless steel mandrel after 10, 50, and 100 total layers are wound. (Winding speed, 10 rpm; IR lamp heat flux, 48.6 kW/m2 ; Initial mandrel temperature, 430 K; Mandrel diameter, 12.7 cm (5 in).): (a) 10 layers wound; (b) 50 layers wound; and (c) 100 layers wound.
Grahic Jump Location
Temperature evolutions during winding in the bottom, middle and top AS4/3501-6 prepreg layers and stainless steel mandrel after 10, 50, and 100 total layers are wound. (Winding speed, 10 rpm; IR lamp heat flux, 48.6 kW/m2 ; Initial mandrel temperature, 480 K; Mandrel diameter, 12.7 cm (5 in).): (a) 10 layers wound; (b) 50 layers wound; and (c) 100 layers wound.
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Temperature histories in the 1st, 25th, and 50th wound layers of a composite cylinder wound from AS4/3501-6 prepreg. (Winding speed, 10 rpm; IR lamp heat flux, 48.6 kW/m2 ; Initial mandrel temperature, 430 K; Mandrel diameter, 12.7 cm (5 in).)
Grahic Jump Location
Degree-of-cure evolutions in the 1st, 25th, and 50th wound layers of a composite cylinder wound from AS4/3501-6 prepreg. (Winding speed, 10 rpm; IR lamp heat flux, 48.6 kW/m2 ; Initial mandrel temperature, 430 K; Mandrel diameter, 12.7 cm (5 in).)
Grahic Jump Location
Temperature histories in the 1st, 25th, and 50th wound layers of a composite cylinder wound from AS4/3501-6 prepreg. (Winding speed, 10 rpm; IR lamp heat flux, 48.6 kW/m2 ; Initial mandrel temperature, 480 K; Mandrel diameter, 12.7 cm (5 in).)
Grahic Jump Location
Degree-of-cure evolutions in the 1st, 25th, and 50th wound layers of a composite cylinder wound from AS4/3501-6 prepreg. (Winding speed, 10 rpm; IR lamp heat flux, 48.6 kW/m2 ; Initial mandrel temperature, 480 K; Mandrel diameter, 12.7 cm (5 in).)
Grahic Jump Location
Temperature histories in the top 20 layers of a composite cylinder wound from AS4/3501-6 prepreg for initial mandrel temperatures of 380, 430, and 480 K. (Winding speed, 10 rpm; IR lamp heat flux, 48.6 kW/m2 ; Mandrel diameter, 12.7 cm (5 in).)
Grahic Jump Location
Degree-of-cure distributions in the 100 layers of a composite cylinder wound from AS4/3501-6 prepreg for initial mandrel temperatures of 380, 430, and 480 K. (Winding speed, 10 rpm; IR lamp heat flux, 48.6 kW/m2 ; Mandrel diameter, 12.7 cm (5 in).)
Grahic Jump Location
Temperature distributions in the top 5 layers of a composite cylinder wound from AS4/3501-6 prepreg radiatively cured over one-quarter and one-half of its circumference. (Winding speed, 10 rpm; IR lamp heat flux, 48.6 kW/m2 ; Mandrel diameter, 12.7 cm (5 in).)
Grahic Jump Location
Degree-of-cure distributions in top 100 layers a composite cylinder wound from AS4/3501-6 prepreg radiatively cured over one-quarter and one-half of its circumference. (Winding speed, 10 rpm; IR lamp heat flux, 48.6 kW/m2 ; Mandrel diameter, 12.7 cm (5 in).)
Grahic Jump Location
Temperature distributions in the top 5 layers of a composite cylinder wound from AS4/3501-6 prepreg at the winding speeds of 10, 20, and 30 rpm. (Winding speed, 10 rpm; IR lamp heat flux, 48.6 kW/m2 ; Mandrel diameter, 12.7 cm (5 in).)
Grahic Jump Location
Degree-of-cure distributions in top 100 layers a composite cylinder wound from AS4/3501-6 prepreg at the winding speeds of 10, 20, and 30 rpm. (Winding speed, 10 rpm; IR lamp heat flux, 48.6 kW/m2 ; Mandrel diameter, 12.7 cm (5 in).)
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Process window for a AS4/3501-6 prepreg composite cylinder wound on a 12.7 cm (5 in) diameter mandrel and radiatively cured over one-quarter of its circumference
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Process window for a AS4/3501-6 prepreg composite cylinder wound on a 25.4 cm (10 in) diameter mandrel and radiatively cured over one-quarter of its circumference
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Hoop winding while curing by in-situ infrared (IR) heating. Continuous fibers within the prepreg lie in the circumferential direction in the wound composite cylinder. Prepreg width is assumed to be equal to the cylinder length.

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