REPLACEMENT POWER AMPLIFIERS

Sentek Dynamics’ PA Series replacement power amplifiers are available for most other vibration test equipment manufacturers obsolete, inefficient power amplifiers.  The PA Series amplifiers are nearly twice as efficient as older air and water-cooled amplifiers and provide a significant savings in power consumption and electrical bills.  So significant, in fact, that the savings can offset the cost of a replacement amplifier in a very short period. 

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200 kN (44,000 lbf) Water-Cooled Shaker Installed

This past week, the Sentek Dynamics’ Field Service Team completed installation of Sentek Dynamics’ third-largest water-cooled electrodynamic shaker! This extra-high force Model E20064A shaker with a PA4200 power amplifier offers a rugged and proven solution for large payloads and demanding testing requirements.  It will be used by an exciting new leader in energy generation for product development and qualification testing.

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Modal Testing using Modal Shakers

Modal Testing is carried out to understand the dynamic behavior of structures. The procedure is to excite the structure or device under test (DUT) with a force of known frequency and amplitude. The response is then analyzed by measuring the output of strategically placed accelerometers. Using the data acquired from the accelerometers, a modal model of the structure or DUT can be constructed. From the derived model, modal parameters, including resonant frequencies, mode shapes, and damping values can be determined.

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Hydraulic Lift Option

Sentek Dynamics offers head expanders for applications where larger mounting surfaces are required for vertical vibration testing. Head expanders with load support and guidance options increase the payload capacity without damaging the shaker armature and suspension system. The hydraulic lift option is an additional option which eases the lifting and lowering of the head expander to facilitate shaker rotation. The system utilizes hydraulic cylinders to raise the load support structure and significantly reduces the setup time between vertical and horizontal tests and vice versa.

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Sentek Dynamics Permanent Magnet Shakers

Sentek Dynamics is pleased to announce its extensive product offering of high quality, lab grade permanent magnet shakers for “desktop” and “modal” vibration testing applications. Sentek Dynamics’ permanent magnet shakers are based on years of vibration testing experience and offer a proven solution to demanding vibration testing requirements.

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Is It Time for a Check Up?

You see your Doctor annually, even when you’re feeling fine.

You service your vehicle regularly, even when it is purring like a kitten.

Are you servicing your Shaker on a regular basis? Regular, scheduled preventative maintenance service for your shaker is equally important.

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Sentek Dynamics’ Mini “Combo” Shaker & Controller Kit

Sentek Dynamics’ Mini “Combo” Shaker & Controller Kit
The Sentek Dynamics’ Mini “Combo” Shaker is a small, portable 20 N (4.5 lbf) permanent magnet shaker with an integral power amplifier. The design eliminates the need for a separate, inconvenient power amplifier and attendant cables. The drive signal from most vibration controllers and signal generators can be directly connected to the BNC connector on the body of the shaker.

Sentek Dynamics’ mini “combo” shaker can be ordered with an optional slip table. The trunnion design allows the mini-shaker to be rotated and locked for testing in any of three axes.

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Astro Digital - Vibration Testing

Small satellites, more commonly known as CubeSats, have gained popularity because of their miniature size and their data acquisition techniques. These satellites are being launched at a record pace and have roped big players into this aerospace segment. Astro Digital is a company that risen to the challenge of land mapping and hazard detection using CubeSats.

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