Heat Transfer Analysis of Flame-sprayed Metal-polymer Composite Structures

• Author / Creator

  Therrien, David S

• The temperature distribution of a flame-sprayed metallic layer on
  glass fiber-reinforced epoxy flat plates was determined experimentally,
  analytically, and numerically. The composite samples consisted of flat
  composite glass fiber-epoxy plates fabricated by filament winding, a layer of
  garnet sand embedded in the epoxy, with similar thermal properties to the
  glass fiber-epoxy layer, and a flame-sprayed aluminum-silicon (Al-12Si)
  coating. The use of garnet sand to promote adhesion of the metallic coating
  during flame spraying is novel. A second set of samples had a top layer of
  glass fiber wound above the coating. A resistive heating wire was attached to
  the coated surface at the leading edge of both sets of samples, while the
  polymer and coating surfaces were exposed to forced convective cooling in a
  wind tunnel. Thermocouples were attached to the polymer and coating to
  measure the transient and spatial surface temperature distributions. Both
  the coating and polymer surfaces experienced significant temperature
  increases near the heating source, with a uniform decay of the surface
  temperature away from the source. The surface temperature of the coating
  was appreciably higher than that of the polymers, away from the heating
  source. The use of a metallic coating to conduct heat on polymer structures is
  also novel, and the results indicate that the metallic coating is an effective
  conductor, while the polymer acts as an insulator.

• Subjects / Keywords

  • Composite
  • Thermal Spray
  • Heat Transfer

• Graduation date

  Spring 2013

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R3SK5R

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.