Accession Number:

ADP000016

Title:

Static Indentation Tests on Composite Plates for Impact Susceptibility Evaluation,

Descriptive Note:

Corporate Author:

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CENTER

Personal Author(s):

Report Date:

1982-09-01

Pagination or Media Count:

30.0

Abstract:

Static indentation tests with spherical steel indenters were conducted on thin composite plates to assess the impact susceptibility of graphite epoxy composites. The data were used to validate an impact strength analysis based on large deflection plate theory. Tests and analysis were in good agreement on both plate stiffness and maximum strain energy at failure. A parametric analysis showed that for brittle matrix composites the matrix dominated the threshold of damage, while in tough matrix composites the fibers dominated the threshold of damage. Penetration was always dominated by large deflection membrane effects. Author

Subject Categories:

  • Laminates and Composite Materials
  • Numerical Mathematics
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE