Vibration testing system

Details Vibration testing system Vibration testing system

1976-02-02

1977-03-15

Queisser, Richard C.

Measuring and testing

Moisture content or absorption characteristic of material

B06B 100

Patent

active

040117499

ABSTRACT:
A multi-degree-of-freedom shock and vibration testing system which includes a specimen-holding table having short projections engaged by hydraulic actuator assemblies. Each actuator assembly includes a pair of hydraulic actuators on opposite sides of the projection and a servo valve for connecting the actuators to a source of pressured hydraulic fluid and to a drain, to maintain the pair of actuators pressed firmly against opposite sides of the projection while moving substantially synchronously. A hydrostatic bearing pad bears against a rounded end of each actuator and against opposite sides of the projection, to permit the projection to slide perpendicular to the motion of the actuators and to pivot.

REFERENCES:
patent: 2890584 (1959-06-01), Dickie
patent: 3699807 (1972-10-01), Kerley, Jr. et al.

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