Accession Number:

ADA279669

Title:

Structural Performance of Cylindrical Pressure Housings of Different Ceramic Compositions Under External Pressure Loading. Part 1. Isostatically Pressed Alumina Ceramic.

Descriptive Note:

Final rept.,

Corporate Author:

NAVAL COMMAND CONTROL AND OCEAN SURVEILLANCE CENTER RDT AND E DIV SAN DIEGO CA

Personal Author(s):

Report Date:

1993-08-01

Pagination or Media Count:

99.0

Abstract:

Ten monocoque cylinders, 18-inches length by 12-inches outer diameter, OD by 0.412 inches thickness, fabricated from 96-percent alumina ceramic were assembled into external pressure housings and experimentally evaluated under short-term, static, and cyclic pressure loadings. This study was undertaken as part of a program to promote the application of ceramics to large external pressure housings for underwater vehicles. Pressure testing was performed to generate structural performance data that could be used to establish design criteria for external pressure housings constructed by using 96-percent alumina ceramic as the primary hull material. Design curves for 96- percent alumina-ceramic housings are presented that relate the maximum number of operational dive cycles to the maximum allowable stresses in the ceramic housing during each dive cycle. The 96-percent alumina ceramic has been found to be a reliable structural material for the fabrication of cylindrical external pressure housings with a minimum fatigue life of 1,000 dive cycles to nominal design stresses of - 160,000 psi in the hoop direction.

Descriptors:

Subject Categories:

  • Ceramics, Refractories and Glass
  • Laminates and Composite Materials
  • Machinery and Tools
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE


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