Application of prompt gamma activation analysis for the determination of water content in composite materials

  • D. J. Dorsey
  • R. Hebner
  • W. S. Charlton


Prompt gamma activation analysis (PGAA) is a common technique for the identification of hydrogen and the measurement of hydrogen concentrations within a material. Carbon fiber reinforced epoxy matrix composites are materials that are known to absorb water. The experiments described herein demonstrate the feasibility of using PGAA to detect water absorption and desorption and show that PGAA measurements of hydrogen concentration are more sensitive to water absorption than gravimetric measurements. Hydrogen concentration measurements are made using PGAA after calibration with a boric acid solution sample. Relative changes in PGAA measurements generally agree with values expected based on gravimetric measurements.


Epoxy Water Absorption Carbon Fiber Matrix Composite Boric Acid 
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Copyright information

© Springer-Verlag/Akadémiai Kiadó 2005

Authors and Affiliations

  • D. J. Dorsey
    • 1
  • R. Hebner
    • 2
  • W. S. Charlton
    • 3
  1. 1.Nuclear Engineering Teaching Laboratory, University of Texas at Austin
  2. 2.Center for Electromechanics, University of Texas at Austin
  3. 3.Department of Nuclear Engineering, Texas A&M University

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