Method of and device for measuring bulk modulus of minute specimens
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United States of America Patent
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Issued Date -
Mar 24, 2005
app pub date -
Sep 24, 2004
filing date -
Sep 24, 2003
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Abandoned
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Abstract
The present invention provides a method of and a device for measuring bulk modulus of a fine specimen using a measurement chamber, a reference chamber for comparison, and a differential pressure measurement device for detecting the pressure difference between both chambers. The specimen is contained in the measurement chamber, and in a state where both chambers are set under the standard atmospheric pressure. Then both chambers are set under the compression atmospheric pressure higher than the standard atmospheric pressure and the pressure changes are periodically given to both chambers. The initial volume of the specimen is detected from the differential pressure signals of both chambers when it is under the standard atmospheric pressure and the compression volume of the specimen is detected from the differential pressure signals of both chambers when it is under the compression atmospheric pressure. The bulk modulus of the specimen is measured by computing and analyzing these detected signals.
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