A PROPOSED METHOD FOR MEASURING THERMAL DIFFUSIVITY AT ELEVATED TEMPERATURES. Final Report
A method was proposed for the measurement of thermal diffusivity of solids as a function of temperature at elevated temperatares. The method consists of generating a temperature oscillation on one face of a finite solid and measuring the phase difference between this oscillation and that which results on the other face. The specimen in the form of a thin disk will be irradiated on one face by chopped radiation in a carbon-arc image furnace. This will result in a steady axial temperature distribution with a small amplitude temperature oscillation superimposed. The phase difference between the fundamental components of the oscillations at both faces will be measured. This phase difference is a function of the diffusivity, frequency of oscillation and thickness of specimen. (auth)
- Research Organization:
- New York Naval Shipyard. Material Lab., Brooklyn
- NSA Number:
- NSA-14-006427
- OSTI ID:
- 4182481
- Report Number(s):
- AFSWP-1145; NML-5046-3(Pt. 119
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-60
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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