NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Analytical, Numerical, and Experimental Investigation on a Non-Contact Method for the Measurements of Creep Properties of Ultra-High-Temperature MaterialsResponsive access to space requires re-use of components such as rocket nozzles that operate at extremely high temperatures. For such applications, new ultra-hightemperature materials that can operate over 2,000 C are required. At the temperatures higher than the fifty percent of the melting temperature, the characterization of creep properties is indispensable. Since conventional methods for the measurement of creep is limited below 1,700 C, a new technique that can be applied at higher temperatures is strongly demanded. This research develops a non-contact method for the measurement of creep at the temperatures over 2,300 C. Using the electrostatic levitator in NASA MSFC, a spherical sample was rotated to cause creep deformation by centrifugal acceleration. The deforming sample was captured with a digital camera and analyzed to measure creep deformation. Numerical and analytical analyses have also been conducted to compare the experimental results. Analytical, numerical, and experimental results showed a good agreement with one another.
Document ID
20070002075
Document Type
Conference Paper
Authors
Lee, Jonghyun (Massachusetts Univ. MA, United States)
Hyers, Robert W. (Massachusetts Univ. MA, United States)
Rogers, Jan R. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Rathz, Thomas J. (Alabama Univ. Huntsville, AL, United States)
Choo, Hahn (Tennessee Univ. TN, United States)
Liaw, Peter (Tennessee Univ. TN, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2006
Subject Category
Composite Materials
Meeting Information
Materials for Responsive Space Accesss(Cincinnati, OH)
Distribution Limits
Public
Copyright
Other