Structural analysis of an NDE-inspected carbon-carbon componentIn this research, it is demonstrated that the integration of nondestructive evaluation with the finite element method (a quantitative NDE/FEM approach) can be used for analysis and behavior prediction of advanced materials, such as fiber composites, after processing and during in-service testing. First, stress, strain, and energy data were calculated by the finite element method for square plates with a 10 percent difference in the material properties between specified segments, i.e., between the center and the outside section or between two halves of the plate. This demonstrated the efficiency of the method in predicting variations in the structural behavior based on small material property differences. Then, finite element analyses and actual axial compression tests were performed on a Space Shuttle brake stator made from woven carbon-carbon composites. The material properties used in the numerical modeling of the stator were previously characterized at a large number of points on the component by quantitative NDE-procedures, i.e., ultrasonics and radiography. The results from the experimental compressive loading tests were used to verify the NDE/FEM results. Good agreement was found for most parameters.
Document ID
19920051942
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Striz, A. G. (NASA Langley Research Center Hampton, VA, United States)
Cruse, G. (NASA Langley Research Center Hampton, VA, United States)
Kline, R. A. (Oklahoma, University Norman, United States)
Madaras, E. I. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
Quality Assurance And Reliability
Report/Patent Number
AIAA PAPER 92-2241
Meeting Information
Meeting: AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference