Heating and cooling system
AssigneeThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration
InventorsLeland A. Imig, Mickey R. Gardner
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Abstract
A heating and cooling apparatus capable of cyclic heating and cooling of a test specimen undergoing fatigue testing. Cryogenic fluid is passed through a block 10 clamped to the specimen 11 to cool the block and the specimen. Heating cartridges 13 penetrate the block 10 to heat the block and the specimen 11 to very hot temperatures. Control apparatus 36 and 46 is provided to alternately activate the cooling and heating modes to effect cyclic heating and cooling between very hot and very cold temperatures. The block 10 is constructed of minimal mass to facilitate the rapid temperature change thereof.
Claims9
A device for heating and cooling a specimen undergoing fatigue testing comprising:
- a fatigue testing machine;
- a test specimen connected to said fatigue testing machine;
- block means having a small mass to enable rapid cooling and heating thereof;
- said block means being constructed and arranged to engage said test specimen;
- clamping means for securing said block means to said test specimen;
- cooling means for cooling said block means and test specimen to very cold temperatures;
- heating means for heating said block means and test specimen to very hot temperatures;
- and
- contol means for selectively activating said heating means and said cooling means to selectively heat and cool said test specimen.
Dependencies are inferred from the claim text.