Ground Vibration Testing (GVT) of Aircraft Assembly
A Ground Vibration Test (GVT) involves carrying out modal analysis of an aircraft and its sub-assembly components to analyze and detect any changes in their structural properties. The modal parameters determined through this testing are used to validate analytical models. The modal characteristics are also used to predict the flutter of the aircraft in order to create a safe flight envelope before flight operation. Thus, GVT is a crucial process in the design and development cycle of aircrafts.
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Vibration Utilities App Update
Crystal Instruments recently updated the Vibration Utilities app (available for iOS and Android). This app supports features assisting in calculations related to the shock and vibration testing industry.
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Automatically Run Pre-Defined Vibration Tests Using Digital Inputs
Vibration testing for the automotive industry, including the testing of batteries for electric vehicles, requires combined testing with temperature and humidity to ensure reliability and safety during operation. Contact Sentek Dynamics to configure a complete system or contact our testing service lab for more options.
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Introduction to Shock Testing in EDM-VCS (Vibration Control Software)
Developing a new product for commercial or defense application may require a wide range of tests to prove the strength and durability of a design. Shock testing is often required to ensure a product can endure the wear and tear it will experience when it is used in the real world.
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Modal Survey of Engine
To acquire FRFs of an engine, it is hung with bungee cords to imitate free-free boundary conditions. Two modal shakers were used to excite the V6 engine block. Shaker excitation provides better consistency and repeatability than a modal hammer. It also produces a cleaner data set because of a greater average. Multiple sensors are roved through the engine to obtain the vibration characteristics.
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MESA Sine on Random Vibration Control
This paper concentrates on the MESA Sine on Random control per MIL STD 810H, method 514.8, annex D, 2.3 category 14. This category governs Sine on Random control for helicopters.
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Shock Testing in Charlotte, North Carolina
In the coming months, Sentek Dynamics will be installing and commissioning our first shock testing system offering a variety of wave types from half-sine to trapezoidal, peak acceleration of 1000 g’s, and capable of testing payloads of up to 200 kg. Alongside vibration, temperature, and humidity capabilities, shock testing will be the latest in the contract test services offered by the Sentek Dynamics Charlotte facility.
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Remote Vibration Test Monitoring in the EDM Cloud by Crystal Instruments
In today’s distributed work environment with employees working on-site and remotely, cloud capabilities are essential for an organization to operate effectively. Sentek Dynamics customers have a powerful time-saving tool available to them in the Engineering Data Management [EDM] Cloud by Crystal Instruments, Sentek Dynamics sister company and world-class data acquisition and vibration control innovator. The EDM Cloud provides a digital workplace for monitoring vibration tests from anywhere in the world.
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Multiple-Exciter Single-Axis (MESA) Vibration Control with Crystal Instruments Vibration Controller
This paper discusses the usage and unique features of Multiple-Exciter Single-Axis (MESA) control with Crystal Instruments vibration controller.
MESA is a type of multiple exciter setup with all exciters arranged along a single axis. The goal is to combine the excitation forces and dimensional capabilities from multiple exciters to test a long and/or large Unit Under Test. MIL-STD-810G Method 527 discusses the terminology involving single and multiple exciter testing configurations.
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Battery Testing with CAN bus
Sentek Dynamics’ THV Series Environmental Test Systems with the Crystal Instruments’ Spider-101 Controller provide a turn-key solution for product development/certification and reliability improvement. The Crystal Instruments’ controller with IEEE Time Synchronization is the optimum solution for combined temperature, humidity and vibration testing of batteries, electrical and electro-mechanical components.
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