Abstract
Electrically conductive materials are rapidly heated to temperatures near 7000° F in the newly developed facility described in this paper. The facility was designed to be used in conjunction with a high-strain-rate machine for testing a variety of materials including graphites, carbon phenolic and many metals under uniaxial stress states. A description of the direct resistance (I2R) heating technique is given, including discussion on the design problems and considerations associated with heating materials to very high temperatures. Among these considerations are measurement of true temperature, measurement of load and strain, reduction of radiative losse from the sample surface, protection of the gripping contact and alignment of the specimen for uniaxia-stress high-strain-rate testing. Heating rates approaching 20,000° F/sec have been realized and some preliminary test results are shown.
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