Accession Number : ADA257461


Title :   A Probabilistic Method to Establish the Reliability of Carbon-Carbon Rocket Motor Nozzles. Volume 3. Stress and Reliability Analysis of Layered Composite Cylinders Under Thermal Shock


Descriptive Note : Final rept. 1987-1991


Corporate Author : VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF ENGINEERING SCIENCE AND MECHANICS


Personal Author(s) : Heller, R A ; Thangjitham, S ; Wang, X


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a257461.pdf


Report Date : Apr 1992


Pagination or Media Count : 69


Abstract : The state of stress in a cylindrical structure consisting of multiple layers of carbon-carbon composite and subjected to thermal and pressure shock are analyzed using an elasticity approach. The reliability of the structure based on the weakest link concept and the Weibull distribution is also calculated. Coupled thermo-elasticity is first assumed and is shown to be unnecessary for the material considered. The effects of external and internal thermal shock as well as a superimposed pressure shock are examined. It is shown that for the geometry chosen, the structure may fail when exposed to thermal shock alone while a superimposed pressure shock can mitigate the probability of failure.


Descriptors :   *CARBON CARBON COMPOSITES , *CYLINDRICAL BODIES , *THERMAL SHOCK , MECHANICAL PROPERTIES , COMPOSITE MATERIALS , THERMOELASTICITY , STRESS TESTING , RELIABILITY , BRITTLENESS


Subject Categories : Laminates and Composite Materials
      Structural Engineering and Building Technology


Distribution Statement : APPROVED FOR PUBLIC RELEASE