Delamination Studies of Impacted Composite Plates,

Abstract

Both steel-epoxy and fiberglass-epoxy composite crossplied plates were impacted with blunt ended cylindrical impactors at velocities below the critical penetration velocity. Failure mechanisms in the form of lamina delamination were observed for thirteen different types of ply arrangements. Lamina delamination was found to be the dominant failure mode and fiber breakage or pullout occurred only in the area in direct contact with the impactor. It was found for impacted fiberglass-epoxy plates that the number of plies within a given lamina, especially the first several laminae, are very important in the resulting progressive delamination. The extent of the damage appears to be related to kinetic energy imparted to the plate by the impactor. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1976
Accession Number
ADA035517

Entities

People

  • C. Allen Ross
  • R. L. Sierakowski

Organizations

  • University of Florida

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Epoxy Composites
  • Failure Mode And Effect Analysis
  • Fiber Reinforced Composites
  • Fiberglass
  • Filaments
  • Generators
  • Glass Fibers
  • Kinetic Energy
  • Laminates
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Mechanics
  • Military Research
  • Reinforced Plastics
  • Textiles

Fields of Study

  • Materials science

Readers

  • Structural Health Monitoring of Composite Structures.