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An Automatic Apparatus for Testing Refractories Under Tensile and Compressive Loads at High Temperatures
Author(s) -
SCARLETT J. A.,
ROBERTSON J. A.
Publication year - 1951
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1951.tb13483.x
Subject(s) - materials science , composite material , ultimate tensile strength , pyrometer , compressive strength , deformation (meteorology) , temperature measurement , physics , quantum mechanics
Construction and operating details are given for an apparatus used for testing small refractory specimens under tensile or compressive loads up to 2200°C. An electrical resistance, graphite tube furnace can be made to heat at a uniform rate of 0° to 1000°C. per hour and to shut off at a predetermined specimen temperature or deformation. Temperature is measured by a radiation pyrometer and controlled by a duration‐adjusting, impulse‐type controller. Deformation is measured by means of a micrometer dial gauge and transmitted through a slide wire rheostat to a bridge‐type recorder. A standard deviation of 22°C. for compression failure and 24°C. for tensile failure was determined on a periclase refractory.