Strength of solid pressure media and implications for high pressure apparatus |
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| Authors: | J M Edmond M S Paterson |
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| Institution: | (1) Department of Geophysics and Geochemistry, Australian National University, Canberra, Australia;(2) Present address: P.O. Box 456, Luanshya, Zambia |
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| Abstract: | The stress-strain properties of talc, pyrophyllite, silver chloride, sodium chloride, boron nitride and graphite have been measured under confining pressures up to 8 or 10 kb at room temperature, and, in the case of talc, also at temperatures up to 900° C. The extrapolation and application of these results to solid medium high pressure apparatus of pistoncylinder type is discussed and a calculation made of the correction to nominal pressure ( friction correction ), taking into account the stress gradients in the medium and the shearing between the medium and the cylinder wall. Correction to the nominal differential stress measured in solid medium stress-strain apparatus is also discussed. |
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