Dual Excitation Shaker Push-push Testing
Dual excitation shaker systems are commonly used to test long or heavy devices under test (DUT). When the device under test is very long or too heavy, a single shaker cannot perform the test because of oversized dimensions or a large driving force. Thus a dual excitation shaker system is arranged as the solution. Users can fix the longer sized or heavy DUT horizontally or vertically on top of a dual excitation shaker system. Common arrangements are horizontal push-push, push-pull, and vertical.
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The Benefits of Regularly Scheduled Preventive Maintenance
Preventive maintenance is maintenance that is performed on operating equipment to ensure optimum performance and reduce the likelihood of a failure at an inopportune time. Maintenance strategies for electro-dynamic vibration testing systems (shakers) range from reactive (run to failure) to predictive maintenance, where the aim is to predict failures before they occur. Regularly scheduled maintenance, a.k.a. preventive maintenance, lies between reactive maintenance and predictive maintenance and offers numerous benefits in cost, and system reliability and performance.
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Understanding the Frequency Signature of a Head Expander
Head expanders are commonly used for vertical environmental testing. The purpose of the head expander is to extend the surface area of the shaker top to accommodate units under test (UUTs) with large dimensions for mounting and testing. One of the key parameters is the working frequency range associated with each head expander. The upper frequency is often used instead of the first resonance frequency of the head expander in vibration control tests.
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Trade-in and Installation of 65 kN Vibration Testing System
Have your vibration test equipment needs changed? Do you need a bigger system? Perhaps a slip table with higher resistance to pitch, roll and yaw moments.
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The Unique Advantages of Simultaneous 3-Axis Vibration Testing
Simultaneous 3-axis testing has several unique advantages compared with vibration testing in one axis at a time. The primary advantages include, but are not limited to, the ability to reproduce a real-world environment identical to what the product sees in the field, and significant setup and test time savings compared to individual single-axis testing.
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Relocation and Recommissioning of a 6 kN [1340 lbf] Shaker
In June 2020, the Sentek Dynamics’ Field Service Team completed a relocation and recommissioning service on a model L0620M-PAS106-LST400M/AAC/AIF/DMF vibration testing system.
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Vibration Testing of Aerospace Components
Electromechanical actuators are used to control the movement and position of various control surfaces on aircraft. Aircraft flight control surfaces allow the adjustment and control of aircraft flight altitude. Electromechanical actuators are critical components that undergo rigorous safety and reliability testing.
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PID Control Theory
PID control is a very simple and powerful method for controlling a variety of processes, including temperature. The acronym PID stands for “Proportional, Integral, and Derivative”.
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Dual 120 kN Shaker System Installed and Running
A dual 120 kN shaker system was professionally installed this week at a customer’s site. The model installed was a H12056A-PA3130-LST1000M/AAC/MGB/CU-3/CIP vibration test system, which is a 26,437 lbf water-cooled vibration testing system with 2 inch pk-pk displacement, a low-pressure magnesium horizontal slip table, an air-cooled power amplifier, water-cooling unit, interconnecting cables, and hose.
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Vibration Testing Systems Available for Immediate Shipment - Update
In addition to new vibration testing systems available for immediate delivery, Sentek Dynamics has accepted several trade-ins from existing customers needing additional capacity. Used 50 kN (11,000 lbf) and 65 kN (14,300 lbf) systems were recently added to our inventory.
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![Relocation and Recommissioning of a 6 kN [1340 lbf] Shaker](https://images.squarespace-cdn.com/content/v1/5526e8e7e4b0356ed20c43fe/1598559179295-G4KTZ6RYO5AR3ETJ19Q1/Final+Location.jpeg)
