Evaluation of epoxy composites using photoacoustic Fourier transform infrared spectroscopy. Final report

Technical Report · Tue Jul 01 04:00:00 EDT 1986

OSTI ID:7170839

Sloan, J M

Fourier-transform infrared spectroscopy (FT-IR) using a photoacoustic sampling cell was used to obtain high-quality infrared spectra of various fiber-reinforced epoxy composites and the corresponding resin matrixes. Photoacoustic spectroscopy (PAS) offers the advantages of having little or no sample preparation for high-quality spectra to be obtained, and no alignment of the infrared incident beam is necessary. This makes PAS an ideal sampling method for in-field testing of composite laminates. The spectra revealed information on the degree of cure of the resin system by monitoring the 915/cm absorption band and the type of reinforcement material used (glass or Kevlar).

• Research Organization: Army Materials Research Agency, Watertown, MA (USA). Materials Technology Lab.
• OSTI ID: 7170839
• Report Number(s): AD-A-172367/5/XAB; MTL-TR-86-29
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ABSORPTION SPECTRA
ALIGNMENT
COMPOSITE MATERIALS
CURING
EPOXIDES
FIBERS
FOURIER TRANSFORMATION
INFRARED SPECTRA
INTEGRAL TRANSFORMATIONS
MATERIALS
MATRIX MATERIALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
POLYMERS
SAMPLING
SPECTRA
SPECTROSCOPY
TRANSFORMATIONS