A laser Raman spectroscopic technique has been developed which can measure the peak temperatures experienced by charring heatshield materials and determine their posttest compositions (char, pyrolysis material and virgin resin). The technique has the capabilities of analyzing areas less than 0.004 in.in diameter, or lines 0.004 in. in width and 0.075 in. in length, thereby providing fine detail for surface and internal mappings, and performing the analyses rapidly and conveniently in the laboratory following testing or flight recovery. Representative plots of temperature and composition profiles are provided.
Evaluation and mapping of heathshield flight temperature and composition with laser raman spectroscopic techniques
Ermittlung und Aufzeichnung der Temperatur und Zusammensetzung des Hitzeschildes waehrend des Fluges mit Laser Raman Spektroskopieverfahren
AIAA-Papers ; Jun ; 1-6
1987
6 Seiten, 12 Bilder, 1 Tabelle, 4 Quellen
Conference paper
English
Raman Spectroscopy and spectroscopic technique
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