OPTICAL PENETRATION DEPTH DETERMINATION IN A GRAPHITE-EPOXY LAMINATE BY PHOTOACOUSTIC FTIR SPECTROSCOPY

Authors
DUBOIS M ENGUEHARD F BERTRAND L CHOQUET M MONCHALIN JP
Citation
M. Dubois et al., OPTICAL PENETRATION DEPTH DETERMINATION IN A GRAPHITE-EPOXY LAMINATE BY PHOTOACOUSTIC FTIR SPECTROSCOPY, Journal de physique. IV, 4(C7), 1994, pp. 377-380
Citations number
8
Categorie Soggetti
Physics
Journal title
Journal de physique. IV → ACNP
ISSN journal
11554339
Volume
4
Issue
C7
Year of publication
1994
Pages
377 - 380
Database
ISI
SICI code
1155-4339(1994)4:C7<377:OPDDIA>2.0.ZU;2-5
Abstract
No quantitative spectrum of optical penetration in graphite-epoxy has been so far reported. Transmission and reflection techniques are ineff icient or do not give absolute values. We used three methods to comput e the absolute optical penetration spectrum from the photoacoustic sig nal obtained from a graphite-epoxy composite sample. The spectra obtai ned in the infrared band of 2.5 to 25 mu m are presented. The experime ntal results are also compared to those of a theoretical model.