An Investigation of the Ageing Characteristics of FALANT Filters.
Abstract
Filters used in the FALANT testing protocol were exposed to three environmental conditions: (1) incubation at 38 deg C for 34 days; (2) incubation at 75% relative humidity for 34 days; and (3) continuous exposure to visible light radiation for several days. Infrared and visible spectra of the filters were obtained before and after the incubation periods. Inspection of these spectra reveals only minor changes in the polymers used to embed the dyes. In all cases, the spectral transmission features of the plastic filters did not change during the incubation periods. Filters used in the FALANT testing protocol were exposed to three environmental conditions: (1) incubation at 38 deg C for 34 days; (2) incubation at 75% relative humidity for 34 days; and (3) continuous exposure to visible light radiation for several days. Infrared and visible spectra of the filters were obtained before and after the incubation periods. Inspection of these spectra reveals only minor changes in the polymers used to embed the dyes. In all cases, the spectral transmission features of the plastic filters did not change during the incubation periods.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 17, 1996
- Accession Number
- ADA309406
Entities
People
- George J. Kavarnos
Organizations
- Naval Undersea Warfare Center