Posts tagged Environmental Testing
Fatigue Damage Spectrum

The Fatigue Damage Spectrum (FDS) serves as a pivotal tool in the assessment of structural integrity, portraying the relationship between damage and natural frequency across the frequency domain. Its utility extends to testing laboratories, empowering them to craft precise Random vibration test profiles by analyzing acceleration vibration data derived from real-world environments. By using the FDS, these labs can accurately delineate the damage experienced by structures under dynamic loads, facilitating the development of robust testing protocols essential for ensuring product reliability and safety.

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Modal Analysis of Satellite Model using EDM Modal

The case described in this article examines the modal characteristics of a satellite model acquired from performing experimental modal analysis. A hammer impact test was carried out with two teardrop uni-axial accelerometers (mounted in different directions) to study the modal behavior. The roving excitation method assists in completely avoiding the potential mass loading side effect produced by a roving response procedure. A hard tip was selected to excite the higher frequency modes.

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Mode Shape Characterization

Shaker applications involve the use of many attachments to the shaker’s armature. Head expanders, fixtures, adapters, and devices under test (DUT’s), all attach to the shaker for the testing process. While it is common to simply consider the added mass of these components, their deformation during vibration can also have a significant impact on the vibrations experienced at any certain point of interest.

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MESA Shaker Testing on Dual 300 KN Shaker System

Crystal Instruments Multi-Exciter Single- Axis (MESA) vibration test control allows users to closely replicate real-world applications according to the complex and multi-DOF nature of real vibrations. MESA vibration testing is most commonly used with higher forces on each axis and with long vertical dimensional testing units. Crystal Instruments provides the highest quality and technologically advanced solutions for MESA vibration testing and recently provided comprehensive MESA testing on a dual 300 KN shaker system at an industrial environmental testing lab.

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Electric Vehicle (EV) Battery Testing with Crystal Instruments

In the evolving world of transportation, Electric Vehicles (EV) have become a superior choice for consumers, resulting in a rising demand for automobile manufactures to produce safe, reliable, and efficient EV’s.  Along with the higher production volume comes rigorous standards for testing, specifically when it comes to the crucial components, such as battery packs. 

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Test Group feature in EDM Vibration Control Software

This article discusses a new EDM 11.0 release feature called Test Group, which organizes multiple tests into sections, to run in sequence, and shares test configurations. EDM allows users to configure and re-use the same test for the same or different objects. All configurations and test parameters are applied to a single test. Settings can be loaded and applied to a new test from a saved library. Test configurations are easily shared by sharing just the test file.

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