Measurement of Water Vapor Diffusion Through Laminated Fabrics and Membranes Using a Diode Laser Spectroscope

Abstract

A spectroscopic system based on vapor phase absorption of infrared radiation produced by a diode laser is shown to be useful for measuring water vapor diffusion rates through materials in sheet form. Measurements of water vapor diffusion through four polymer membranes and membrane laminates showed an excellent correlation with an existing water vapor transport apparatus that uses hygroscopic polymer film capacitance sensors. The diode laser spectrometer eliminates sorption hysteresis artifacts present in the capacitance sensors.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1998
Accession Number
ADA355317

Entities

People

  • Alexander Nadezhdinskii
  • Andrey Berezin
  • Donald Rivin
  • Phillip Gibson

Organizations

  • United States Army Soldier Systems Center

Tags

Communities of Interest

  • Human Systems
  • Sensors

DTIC Thesaurus Topics

  • Computer Programs
  • Computers
  • Detectors
  • Films
  • Laminates
  • Laser Diodes
  • Laser Spectroscopy
  • Lasers
  • Mass Transfer
  • Materials
  • Measurement
  • Polymeric Films
  • Polymers
  • Sorption
  • Spectra
  • Test Methods
  • Water Vapor

Readers

  • Optical Physics and Photonics.
  • Plasma Physics.
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers