NON-DESTRUCTIVE EVALUATION OF COMPOSITE MATERIALS VIA THERMAL DIFFUSIVITY MAPPING

It is evident that use of composite materials in infrastructure is on the rise. Techniques are needed for in-situ testing and evaluation of these materials. Pulsed Video Thermography is an emerging non-destructive test method that offers inherent advantages over more conventional techniques. In the field of thermography, traditionally temperature maps on the surface have been employed for the non-destructive evaluation. In the authors' approach, they employ a fundamental material property, thermal diffusivity, for composite assessment. What is reported in this paper is their preliminary work on thermal diffusivity mapping using liquid crystals for a carbon-carbon composite. Results are presented for a flash diffusivity type of setup where pulsed lamp is used on one side, while the temperatures are recorded on the opposite side.

• Corporate Authors:

  University of Arizona, Tucson

  Department of Civil Engineering and Engineering Mechanics
  1209 E 2nd Street
  Tucson, AZ  United States  85721-0072
• Authors:
  • Kulkarni, M R
  • Brady, R P
• Conference:
  • First International Conference on Composites in Infrastructure
  • Location: Tucson, Arizona
  • Date: 1996-1-15 to 1996-1-17
• Publication Date: 1996-1

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 1060-70

Subject/Index Terms

• TRT Terms: Carbon; Composite materials; Liquid crystal displays; Mapping; Nondestructive tests; Thermal diffusion; Thermographs
• Subject Areas: Geotechnology; Highways; Materials; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 00762532
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 20 1999 12:00AM