Vane modulus soil tester

Details Vane modulus soil tester Vane modulus soil tester

1981-07-27

1983-10-25

Stephan, Steven L.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

G01N 324

Patent

active

044111606

ABSTRACT:
A vane modulus soil tester includes a multi-blade vane having a plurality of radially extended and circumferentially spaced-apart blades. The blades have cavities in which resistance-type strain gauges are carried for measuring stress on the face of the vane blades. At least strain gauges are situated so as to be "facing" each other.
A further embodiment may be provided with a series of independent levels of blades of different thicknesses whereby test values may be extrapolated to zero blade thickness conditions or the insitu value. A support base is provided for securely positioning a vane rod extended axially from the vane and for applying torque to the vane through the vane rod.

REFERENCES:
patent: 2907204 (1959-10-01), Gibbs
patent: 3349610 (1967-10-01), Noel
patent: 3443123 (1969-05-01), Broise
patent: 3557886 (1971-01-01), Cobbs
patent: 3561259 (1971-02-01), Barendse
patent: 4091661 (1978-05-01), Handy et al.
patent: 4157528 (1979-06-01), Shuck et al.

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