Accession Number : ADA557454


Title :   Thermal Damage Detection and Characterization in Porous Materials


Descriptive Note : Technical rept.


Corporate Author : NORTH CAROLINA STATE UNIV AT RALEIGH CENTER FOR RESEARCH IN SCIENTIFIC COMPUTATION


Personal Author(s) : Banks, H T ; Criner, Amanda K


Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/a557454.pdf


Report Date : 30 Nov 2011


Pagination or Media Count : 25


Abstract : In this effort, we consider damage detection algorithms using thermal probes. The techniques proposed employ models derived from homogenization theory as the model solution in parameter estimation procedures for simulated data for heat flow in a porous medium. We consider data simulated from a model on a perforated domain with isotropic flow and data simulated from a model on a homogeneous domain with anisotropic flow. We report on ordinary least squares methods combined with the method of mappings to detect the presence of damage and to characterize the geometry of the damage.


Descriptors :   *COMPOSITE MATERIALS , *DAMAGE ASSESSMENT , *HEAT TRANSMISSION , *INVERSE PROBLEMS , *MATHEMATICAL MODELS , *NONDESTRUCTIVE TESTING , *POROUS MATERIALS , *THERMAL DIFFUSION , ANISOTROPY , APPROXIMATION(MATHEMATICS) , ERRORS , GRAPHS , ISOTROPISM , LEAST SQUARES METHOD , MAPPING , RANDOM VARIABLES , TABLES(DATA)


Subject Categories : Laminates and Composite Materials
      Statistics and Probability
      Test Facilities, Equipment and Methods
      Thermodynamics


Distribution Statement : APPROVED FOR PUBLIC RELEASE