Apparatus for the determination of contact stresses in prestress

Details Apparatus for the determination of contact stresses in prestress Apparatus for the determination of contact stresses in prestress

1983-09-06

1985-10-08

Ciarlante, Anthony V.

Measuring and testing

Vibration

By mechanical waves

73637, G01N 2904

Patent

active

045452520

ABSTRACT:
The apparatus comprises a base and two movable opposite centers, one of which is fastened to a rotatable axle, while the other is fastened to a screw by means of a bearing, and mounted in two opposite parallel plates. Between the plates there is disposed a tank filled with an acoustic medium, and underneath it there is mounted a sensor which is connected to a measuring system. Two parallel guides are transversely fastened to the plates. The base is suspended on the parallel guides with a collar fastened to it. The base is provided with a driving screw and a handle. A spring, within the collar and attached to it, is fastened rigidly to a guiding sleeve. To this sleeve there is fastened the tank, on which there are seated parallel rotating rollers. A limiting sleeve of the sensor is mounted inside a guide by means of a locking nut, which is pressed against a second nut fastened to the guiding sleeve.

REFERENCES:
patent: 3266300 (1966-08-01), Grabuski
patent: 3289468 (1966-12-01), van der Veer et al.
patent: 3531982 (1970-10-01), Clotfelter et al.
patent: 4246794 (1981-01-01), Sheets et al.
patent: 4457174 (1984-07-01), Bar-Cohen et al.

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