FIELD: electricity.
SUBSTANCE: bench for thermal and strength tests contains radiation heaters, auxiliary heaters in the area of the most heat-stressed and heat-consuming areas of a tested object and these heaters are equipped with individual adjustable voltage sources and power load system. The auxiliary heaters are made as contact heaters with resistive elements pressed by electric contacts directly to the electroconductive surface of the most heat-stressed and heat-consuming areas of tested object and one pole of the electric contacts is jointed by the common bus. The resistive elements are made as a double-layer pack of electroconductive particles of high-temperature materials and transient resistance values between them define the total resistance of the resistive element. The pack layer adjoining tested object has larger resistance value, and size of the pack, particles and degree of their compression are defined experimentally.
EFFECT: provision of required temperature for the most heat-stressed and heat-consuming areas of tested object thus ensuring the closest approximation of the test conditions to the actual ones.
1 dwg
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Authors
Dates
2014-06-10—Published
2012-12-25—Filed