Dynamic force measuring instrument for foundation and casing

Details Dynamic force measuring instrument for foundation and casing Dynamic force measuring instrument for foundation and casing

1998-10-16

2000-08-08

Noori, Max

Measuring and testing

Testing by impact or shock

Accelerated or decelerated specimen

73 85, 73 1103, G01N 1902

Patent

active

060984473

ABSTRACT:
An attenuation circuit for a pile driving force measurement device is disclosed. The attenuation circuit allows for measurements to be made of the force being applied to a driven pile at a reduced voltage compatible with a voltage sensitive measurement device, such as a personal computer. The forces measured create measurable electrical impulses via magnetostriction. The attenuation circuit conditions the measured impulses so that no separate electrical power circuit or battery is required to power the sensor. At the same time the attenuation circuit protects the measurement device from voltages which might be overly high and damage the equipment.

REFERENCES:
patent: 3817091 (1974-06-01), Frederick
patent: 3931729 (1976-01-01), Frederick
patent: 4112733 (1978-09-01), Marchetti

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