Method and apparatus for determining bulk material properties of elastomeric materials
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United States of America Patent
Stats
-
Jun 17, 2003
Grant Date -
Dec 13, 2001
app pub date -
Apr 3, 2001
filing date -
Apr 4, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for determining bulk material constants such as Poisson's ratio and the ratio of shear modulus to bulk modulus for elastomeric materials, including, but not limited to elastomers, rubbers, gels and sealants is disclosed. The bulk material properties are determined by measuring the pressure change of the elastomeric material when the elastomeric material is subjected to an applied pressure. The changes in the bulk material property due to temperature or a the addition of a diluent may also be determined. The apparatus includes a container that holds the elastomeric material. A pressure sensor is located in the container and is positioned to measure the pressure of the elastomeric material. The signal from the pressure sensor along with the applied pressure is used to determine a bulk material property such as Poisson's ratio or the ratio of shear modulus to bulk modulus for the elastomeric material.
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