International vehicle seismic vibrator

Developed on a bespoke basis Servotest can offer a range of vertical-only, horizontal-only or 'combo' systems. The elements of the transducer system will be described only when necessary to properly disclose the instant invention. These reflected energy waves are recorded over a time period by receivers that detect the motion of the ground in which they are placed. Developed on a bespoke basis Servotest can offer a wide range of multi-axis shake-table systems for multi-axial vibration test work configured to meet specific customer requirements. The transducer system as illustrated in FIG.
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US4771858A - Shear wave vibrator vehicle isolation system - Google Patents

Like a mass attached to the end of a spring, or the mass attached to the hydraulic actuator in a conventional vibrator, the counter-rotating eccentric-mass actuator is a harmonic oscillator. The module or unit that performs the computations using the foregoing equations or their equivalent may be called the sweep controller. It will be apparent, however, to one skilled in the art, that many modifications and variations to the embodiments described herein are possible. Enviro Vibe Seismic Vibrator. From Wikipedia, the free encyclopedia.
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UNIVIB - Land Seismic Acquisition Equipment, INOVA Geophysical

So, the time-variable eccentricity that needs to be implemented on-the-fly and during the sweep is determined from the frequency and magnitude or envelope of the ground force provided to specify the ground force sweep, according to the equation. A source frequently used in land seismic acquisition is the seismic vibrator. If eccentricity is unchanged, but rotational frequency is decreased, the drive system must remove energy to decrease the angular momentum. Plate tectonics also provided a mechanism for Alfred Wegeners theory of continental drift and they also provided a driving force for crustal deformation, and a new setting for the observations of structural geology. Other than Kamata's proposed device, these devices had no means for adjusting eccentricity on-the-fly, with or without simultaneous adjustment of frequency. Geophysical surveys are classified as seismic and non-seismic and provide various levels of detail, but all generate useful data based on the purposes for which the surveys are conducted.
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For example, given the ground force sweep, the magnitude or envelope of the ground force as a function of time of sweep can be determined by. There is a gear reduction using different-sized timing belt pulleys - and - , respectively between the drive shafts and the mass shafts. Seismic testing in You can help Wikipedia by expanding it. The method of claim 20 , wherein the operating is performed for a purpose of hydrocarbon or mineral exploration or for other subsurface geologic structure determination.
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