Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1989-08-03
1990-11-06
Raevis, Robert
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
G01D 702
Patent
active
049676016
ABSTRACT:
A viscoelastsicity measuring apparatus which includes a pair of sample holders, a sample clamping chuck, a detecting rod, a detecting rod support, a displacement detector, a force generator, a sine-wave generator, an amplifier and a heat source for heating the sample and which operates such that a sine-wave stress is induced in the sample and a strain generated in the sample due to the stress is detected so that the modulus of complex elasticity as a characteristic value of the viscoelasticity of the sample is measured on the basis of the amplitude of the stress and the phase difference between the stress and strain. Further, the sample holders are made resilient so that they can move in a direction normal to the sine-wave stress without loss while the extent of their movement in the direction of the stress is made so small as to be negligible, whereby any deformation of the sample due to a thermal expansion of the sample by heating is eliminated in the direction of the stress and strain detection, thereby improving the viscoelasticity measurement accuracy at a temperature different from the temperature at which the sample is set.
REFERENCES:
patent: 4019365 (1977-04-01), Woo
patent: 4033181 (1977-07-01), Oeser
Raevis Robert
Seiko Instruments
LandOfFree
Viscoelasticity measuring apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Viscoelasticity measuring apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Viscoelasticity measuring apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1300106