Glass or Ceramic Spherical-Shell Window Assembly for 20,000-PSI Operational Pressure

Abstract

The Naval Undersea Center (NUC), working with a spherical-shell window with a 150- degree spherical angle and a matching compliant flange, has developed a window- flange assembly that uses a chemically surface-compressed glass or glass ceramic window and a Monel K-500 flange and is suitable for operational pressures up to 20,000-psi. A fiber-reinforced epoxy gasket cushions point contacts between the window and the flange. A Nylon clamp ring holds the window against the flange, while a Delrin ring attaches the flange to the hull. Hydrostatic testing has shown that the assembly, using a window with a thickness-to-inner-radius ratio of at least 0.333, has a minimum fatigue life of 300 cycles consisting of 4-hour pressurizations to 20,000-psi. Substitution of other materials in the window or bearing gasket reduces the fatigue life.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1974
Accession Number
AD0782335

Entities

People

  • Jerry D. Stachiw

Tags

Communities of Interest

  • Air Platforms
  • Counter IED
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Emissions
  • Assembly
  • Compressive Strength
  • Fabrication
  • Hydrostatic Pressure
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Optical Glass
  • Optical Properties
  • Pressurization
  • Shear Modulus

Readers

  • Electrical Engineering
  • Mechanical Engineering/Mechanics of Materials.
  • Polymer Science and Engineering.