SYMPOSIA PAPER Published: 01 January 1968

Application of Alcohol Penetrant for Evaluation of Surface Porosity of Graphite Inserts for Rocket Nozzles


Detection of defect conditions in rocket nozzle graphite components, using clear alcohol as a penetrant, is described as an inspection method. Procedure and acceptance criteria used for graphite with densities of 1.60 to 1.80 are given. Porosity and density evaluation using standard test blocks is discussed relative to rocket test firing results. It is concluded that this method is the most valuable single inspection technique for graphite in this density range when the technique is compared to other common nondestructive tests.

Author Information

Hendron, J., A.
Aerojet-General Corp., Sacramento, Calif.
Price: $25.00
Contact Sales
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Developed by Committee: E07
Pages: 37–47
DOI: 10.1520/STP45884S
ISBN-EB: 978-0-8031-6727-8
ISBN-13: 978-0-8031-6641-7