Thermal measuring and testing – Thermal testing of a nonthermal quantity – With loading of specimen
Patent
1999-01-21
2000-12-26
Bennett, G. Bradley
Thermal measuring and testing
Thermal testing of a nonthermal quantity
With loading of specimen
374 48, 374 49, 374 47, 374 55, 73 5442, 73 5443, 73 5439, 73846, G01N 324, G01N 322, G01N 1110
Patent
active
061648183
ABSTRACT:
Method and apparatus for measuring viscous heating/heat build-up of viscoelastic materials, such as rubber and polymer compounds. Temperature changes in the viscoelastic material are measured during application of a shearing force to the viscoelastic material. The shearing force is applied by rotating a second die plate relative to a first die plate, which remains stationary. Temperature changes in the viscoelastic material attributable to friction between the first die and an adjacent sealing ring are accounted for, and subtracted out of the final temperature values. The present invention provides an accurate, quantifiable, and repeatable measure of viscous heating/heat build-up of a viscoelastic material.
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Dick John S.
Pawlowski Henry
Alpha Technologies
Bennett G. Bradley
Earp, III Robert H.
Miller Raymond A.
Verbitsky Gail
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