Dynamic thermomechanical analyzer
AssigneeShimadzu Corporation
InventorHiroji Kuwata
Life of this patent
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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.
Claims10
An apparatus for analyzing a change of the state of a sample from a fluid state to a solid state, the apparatus comprising:
- 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 means for oscillating the spring including a push rod placed on the top of the spring and a solenoid means for driving the push rod;
- and
- d) a displacement detector coacting with a portion of said push rod for detecting the displacement of the spring.
Dependencies are inferred from the claim text.