Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1984-09-24
1986-04-29
Ciarlante, Anthony V.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
374 53, G01N 2900
Patent
active
045848823
ABSTRACT:
A dynamic viscoelasticity measuring apparatus of torsional vibration type comprising a driving portion for converting a rotary movement to a rotary vibratory movement having a driving shaft having an eccentric end for rotation at an isometric velocity, a driven shaft supported at a right angle to said driving shaft for rotation, an intermediate arm revolving along the side of a cone having a top at the point of intersection of the center line of said driving shaft and the center line of said driven shaft disposed at right angles to each other and a bottom at a circle described by the eccentric end of the driving shaft, and connecting means for operatively connecting opposite ends of said intermediate arm to said driven shaft and said driving shaft and a driving dice for imparting vibration to a specimen, dynamic viscoelasticity of which is to be measured, through said swinging shaft, said vibration having an approximately sinusoidal waveform with complete symmetry.
REFERENCES:
patent: 3447365 (1969-06-01), Lloyd et al.
patent: 3488992 (1970-01-01), Veith et al.
patent: 3554003 (1971-01-01), Wise
patent: 3681980 (1972-08-01), Decker
patent: 4468953 (1984-09-01), Garritano
Ciarlante Anthony V.
Japan Synthetic Rubber Co. Ltd.
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