Damage Development in Confined Borosilicate and Soda-Lime Glasses

Abstract

Post-test microscopy evaluations were performed on borosilicate (Borofloat (registered trademark) 33) and soda-lime (Starphire (registered trademark)) glass specimens following confined compression tests. These included optical and electron microscopy investigations of select specimens tested at low strain rates with confinement pressures up to 1 GPa. Specimens were evaluated following removal of the confinement sleeve or holder. The objective of this work was to investigate the flow and failure behavior of both glasses due to compressive loading with confinement. The observations provide insight into the damage process that occurs during projectile impact/penetration into transparent armor. Highlights of the microscopy evaluations are compared and contrasted for the two glasses of interest. A damage mechanism is proposed based on comparison of the mechanical response data with the post-test microscopy findings.

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Document Details

Document Type
Technical Report
Publication Date
Jul 11, 2011
Accession Number
ADA549073

Entities

People

  • Charles E. Anderson Jr.
  • James F. Spencer
  • Kathryn A. Dannemann
  • Sidney Chocron

Organizations

  • Southwest Research Institute

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Bulletproof Glass
  • Compression
  • Electron Microscopy
  • Electrons
  • Glass
  • Hydrostatic Pressure
  • Materials
  • Measurement
  • Mechanical Properties
  • Microscopy
  • Particles
  • Projectiles
  • Strain Rate
  • Stress Strain Relations
  • Stresses
  • Test And Evaluation
  • Thermal Shock

Readers

  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Structural Health Monitoring of Composite Structures.
  • Surface Coatings Technology.

Technology Areas

  • Microelectronics