SYMPOSIA PAPER Published: 01 January 1982
STP29381S

Nondestructive Characterization of Chopped Glass Fiber Reinforced Composite Materials

Source

Quality control methods are insufficient for assuring defect-free composite materials, which are manufactured at the time of part fabrication. Nondestructive evaluation (NDE) techniques appear, potentially, to offer a means of identifying such defects. The techniques of ultrasonic C-scanning, X-ray radiography, vibrother-mography, and acoustic emission monitoring are considered here. The materials of interest are E-glass and S-2 glass reinforced sheet molding compound. Results from ultrasonic C-scans clearly indicate areas of imperfections. Results of the vibrother-mography and acoustic emission monitoring, however, suggest the need for additional work in these areas, while those of X-ray radiography are inconclusive.

Author Information

Duke, JC
Virginia Polytechnic Institute and State University, Blacksburg, Va.
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Details
Developed by Committee: E08
Pages: 97–112
DOI: 10.1520/STP29381S
ISBN-EB: 978-0-8031-4837-6
ISBN-13: 978-0-8031-0697-0