Journal of Research of the National Bureau of Standards: Engineering and instrumentation. C, Volume 67, Part 3The Bureau, 1963 |
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... Elastic constant - porosity relations for polycrystalline thoria . S. Spinner , F. P. Knudsen , and L. Stone .. An oxygen partial pressure warning instrument . Lewis Greenspan . New fast - opening , large - aperture shutter for high ...
... Elastic constant - porosity relations for polycrystalline thoria . S. Spinner , F. P. Knudsen , and L. Stone .. An oxygen partial pressure warning instrument . Lewis Greenspan . New fast - opening , large - aperture shutter for high ...
Page 39
... Elastic Constant - Porosity Relations for Thoria S. Spinner , F. P. Knudsen , and L. Stone ( October 23 , 1962 ) The relations between the elastic constants and porosity for about 300 thoria specimens have been determined . Both Young's ...
... Elastic Constant - Porosity Relations for Thoria S. Spinner , F. P. Knudsen , and L. Stone ( October 23 , 1962 ) The relations between the elastic constants and porosity for about 300 thoria specimens have been determined . Both Young's ...
Page 40
... elastic moduli were determined by the dy- namic resonance method previously described [ 9 ] . Resonance frequencies were determined to an accu- racy of about 1 part in 4,000 . For each specimen , the fundamental of four different ...
... elastic moduli were determined by the dy- namic resonance method previously described [ 9 ] . Resonance frequencies were determined to an accu- racy of about 1 part in 4,000 . For each specimen , the fundamental of four different ...
Page 41
... elastic moduli of each subgroup given in table 1. For the porosities , which constitute the independent variable , the standard deviation for a particular subgroup is merely a measure of the range of porosity for that subgroup , and a ...
... elastic moduli of each subgroup given in table 1. For the porosities , which constitute the independent variable , the standard deviation for a particular subgroup is merely a measure of the range of porosity for that subgroup , and a ...
Page 42
... elastic moduli must not be confused with the standard deviations of the elastic moduli of the subgroups given in table 1. These standard devia- tions are a measure of the scatter of the points for any given porosity and , although this ...
... elastic moduli must not be confused with the standard deviations of the elastic moduli of the subgroups given in table 1. These standard devia- tions are a measure of the scatter of the points for any given porosity and , although this ...
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accuracy analysis application approximately arithmetic mean average beam BPTI Bureau of Standards calculated calibration ceramic Chem circuit coefficients colorimeter computed constant core crystal curve detector determined deuterium diffraction effect elastic elastic moduli electron energy Engineering and Instrumentation equation experimental factor film filter frequency function given heat hydrogen image densities indicated Instrumentation Vol interferometer ionosphere ions JOURNAL OF RESEARCH materials Mc/s measurement process ment metal method microfilm microwave National Bureau NBS Tech observed obtained optical partial pressure percent permeameter Phys plane Poisson's ratio porosity potassium bromide precision pressure Proc procedure properties quantity radiation Radio range ratio residual thiosulfate resistance resonance rhenium sample shear modulus shown in figure silver silver sulfide solution specimens spectral statistical stress substrate surface systematic error temperature thermal conductivity thermocouple thickness thiosulfate concentration tion tube tungsten values voltage wavelength Young's modulus zero