NONDESTRUCTIVE EVALUATION OF FIBER COMPOSITES. OPPORTUNITY BRIEF NO. 21

Increased use of fiberglass has made practical quality control vital for manufacturers, consumers, and insurers. Inherently nonhomogeneous, fiber composites can contain hard-to-detect internal flaws. This process of nondestructive thermal testing to detect fiberglass flaws involves coating the material with a cholesteric liquid crystal compound and applying heat. The temperature rise causes the crystals to change color, and anomalies in the color indicate internal flaws. This project provides quantitative interpretation of the patterns of surface temperature and underlying flaws, and mentions acoustic and ultrasonic testing.

  • Corporate Authors:

    Massachusetts Institute of Technology

    Sea Grant Program, 77 Massachusetts Avenue
    Cambridge, MA  USA  02139
  • Publication Date: 1980

Media Info

  • Pagination: 20 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00330454
  • Record Type: Publication
  • Report/Paper Numbers: MITSG 80-8
  • Files: TRIS
  • Created Date: May 21 1981 12:00AM