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Plastic set of smooth large radii of curvature thermal conductance specimens at light loads.Thermal contact conductance test data at high vacuum were obtained from two Armco iron specimens having smooth, large radii of curvature, convex, one-half wave length surfaces. The data are compared with calculations based on two macroscopic elastic deformation theories and an empirical expression. Major disagreement with the theories and fair agreement with the empirical expression resulted. Plastic deformation of all the contacting surfaces was verified from surface analyzer statistics. These results indicate that the theoretical assumption of macroscopic elastic deformation is inadequate for accurate prediction of heat transfer with light loads for Armco iron specimens similar to those used in this investigation.
Document ID
19720033202
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mckinzie, D. J., Jr.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1972
Subject Category
Machine Elements And Processes
Report/Patent Number
AIAA PAPER 72-20
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Aerospace Sciences Meeting
Location: San Diego, CA
Start Date: January 17, 1972
End Date: January 19, 1972
Sponsors: Science Research Council
Accession Number
72A16868
Distribution Limits
Public
Copyright
Other

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