Accession Number : ADA264728


Title :   A Ceramic Fracture Model for High Velocity Impact


Descriptive Note : Final rept. Oct 1985-Feb 1993


Corporate Author : WRIGHT LAB EGLIN AFB FL ARMAMENT DIRECTORATE


Personal Author(s) : Cook, William H


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a264728.pdf


Report Date : May 1993


Pagination or Media Count : 184


Abstract : The objectives of this research program were to develop, implement, and demonstrate a failure model for aluminum oxide ceramic under impact loading. A comprehensive test program for Coors AD-85 was conducted. Four types of experiments provided a basis for the development of the ceramic failure model. A phenomenological damage-based failure model for compressive fracture of impacted aluminum oxide was developed with emphasis placed on predicting fragment sizes of failed ceramic. Test data suggested a fragment size correlation with loading rate. A model was developed incorporating the data and implemented in the EPIC hydrocode. Comparisons of the results of this model to penetration test were positive.


Descriptors :   *IMPACT TESTS , *FRACTURE(MECHANICS) , *IMPACT SHOCK , *CERAMIC MATERIALS , SPACECRAFT , HEAT SHIELDS , COMPRESSIVE PROPERTIES , METEORITES , CONFINEMENT(GENERAL) , ALUMINUM OXIDES , TEST METHODS , PENETRATION , HYPERVELOCITY IMPACT


Subject Categories : Ceramics, Refractories and Glass
      Mfg & Industrial Eng & Control of Product Sys
      Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE