Thermal measuring and testing – Transformation point determination
Patent
1992-03-23
1993-05-11
Yasich, Daniel M.
Thermal measuring and testing
Transformation point determination
374 17, 374 22, G01N 2512
Patent
active
052095665
ABSTRACT:
A testing apparatus (dynamic thermomechanical analyzer) for analyzing a change of the state of a sample from a fluid state to a solid state. The dynamic thermomechanical analyzer includes: a) a vessel in which the sample is set; b) a spring standing in the vessel; the top of the spring rising above the surface of the sample; c) an oscillator for oscillating the spring via a push rod with a constant amplitude of force; and d) a displacement detector for detecting the displacement of the spring or the push rod. When the spring is oscillated at a constant amplitude of force, the amplitude .DELTA.L of the displacement of the push rod decreases as the initially fluid sample solidifies.
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patent: 3248928 (1966-05-01), Conklin et al.
patent: 3498104 (1970-03-01), Kerkvoort et al.
patent: 4804274 (1989-02-01), Green
Shimadzu Corporation
Yasich Daniel M.
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