Accession Number : ADD014025

Title :   In-Situ Beta Alumina Stress Simulator.

Descriptive Note : Patent, filed 18 Aug 87, patented 16 Aug 88,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Leonard, John F ; Allen, Douglas M

Report Date : 16 Aug 1988

Pagination or Media Count : 5

Abstract : Described is a method and apparatus for static fatigue testing of ceramic material is described wherein a thin plate of ceramic material is supported at opposite ends thereof in a liquid sodium bath inside an enclosure containing a gaseous atmosphere inert to reaction with liquid sodium, the ceramic plate and sodium bath are controllably heated to preselected temperature, known loads are applied to the ceramic plate through a loading head having a pair of contact points on the ceramic plate intermediate its opposite ends within the sodium bath, and displacements of the loading head at corresponding loads are measured to generate output signals characteristic of loads on the ceramic plate. Keywords: Ceramics; Testing; Patents. (kt)

Descriptors :   *CERAMIC MATERIALS, *PATENTS, ATMOSPHERES, BATHS, DISPLACEMENT, SIMULATORS, FATIGUE TESTS(MECHANICS), GASES, LIQUID METALS, OUTPUT, STATIC LOADS, LOADS(FORCES), SIGNALS, SODIUM, STATIC TESTS

Subject Categories : Ceramics, Refractories and Glass
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE