Modal Analysis of Locomotive Wheel Using EDM Modal

This article examines the acquisition of modal characteristics from a train wheel through experimental modal analysis. Train wheel and rail interactions are critical components worth studying. If the wheel-rail interactions while accelerating or braking excite any of the system modes during the ride operation, it can induce an undesirable effect upon the passengers’ ride and comfort. Hence, the execution of modal analysis is vitally important.

Aakash Umesh Mange - Product ManagerApril 1, 2022Structural Dynamics Testing

Modal Analysis of Headlight Assembly Using EDM Modal

Modal testing provides a crucial verification link in structural design by verifying the accuracy of simulation results and determining the structural characteristics of the actual product.

Aakash Umesh Mange - Product ManagerFebruary 16, 2022Structural Dynamics Testing

EDM 10.0 Release

Crystal Instruments is excited to announce the release of EDM 10.0, the latest software version for all Spider and CoCo products serving advanced and fundamental industries in addition to furthering academic advancements.

Modal Data Acquisition Using CoCo Testing Plan on CoCo-80X/90X

The Modal Data Acquisition (MDA) function for the CoCo-80X/90 allows users to conveniently acquire modal data in the field. The CoCo Testing Plan provides an overview of the measurement process and also provides the ability to customize the measurement entries.

This article describes a step-by-step process of the CoCo MDA function along with the CoCo Testing Plan feature. A brief overview of transferring the data from the CoCo to EDM Modal in order to post-process the data is also presented.

Aakash Umesh Mange - Product ManagerNovember 2, 2021Structural Dynamics Testing

Modal Analysis of Bullet Train Wheel using EDM Modal

This article examines the acquisition of modal characteristics from a bullet train wheel by performing experimental modal analysis. The wheel vibrations affect the dynamics of the wheel-rail interactions. Understanding these vibration characteristics will help mitigate the vibration and noise at high speeds.

Aakash Umesh Mange - Product ManagerSeptember 30, 2021Structural Dynamics Testing

Oregon State University Purchased High Channel Count Spider-80SGi System for Geotechnical Projects

Oregon State University in Corvallis, OR recently purchased a 64-channel Spider-80SGi data acquisition system. Dr. Armin W. Stuedlein, professor of geotechnical engineering said the Spider DAQ will be used for studies on in-situ liquefaction and cyclic softening studies, performance of ground improvements, and testing of full-scale foundations.

Matt Chen - Application & Sales EngineerSeptember 30, 2021Structural Dynamics Testing

Modal Analysis of Disc Brake Rotor using EDM Modal

Executing the modal analysis of a structure is crucial in order to analyze the modal parameters of a test object. The natural frequencies, damping and mode shapes of the unit under test provides help to adjust the mechanical properties of a structure by optimizing the design and improving the structural behavior of the test unit. Consequently, modal analysis is a critical part of product development.

Aakash Umesh Mange - Product ManagerAugust 27, 2021Structural Dynamics Testing

Structural measurements on infrastructure can ensure future safety and avert potential disasters.

Structural measurements on infrastructure are growing in demand given the aging buildings, bridges, and dams that populate countries around the world. Structural measurements are not the only measurements needed for aging infrastructure, but they do play a role. In the structural measurement category, Crystal Instruments offers products to measure and analyze data for large structure measurements like the measurements done on the Vieux Emosson Gravity Dam.

Phase Match

In any multi-channel DAQ or vibration control system, where each channel is capable of measuring unique sensors, it is necessary to quantify how the channels are different from each other. The channels are designed identically, but component tolerances will cause differences between channels.

Watch how our products are designed and made.

Founded in 1996, Crystal Instruments designs and manufactures instrumentation products for machine vibration monitoring, dynamic measurement, and environmental testing. The products are developed in Silicon Valley and our modern lab in North Carolina. Crystal Instruments products are thoroughly tested on a variety of vibration shakers and environmental chambers in our lab during the design phase to meet the extreme requirements of military and aerospace applications.

New Strain Gage Video by Aakash Umesh Mange

Watch Aakash Umesh Mange’s new video featuring the powerful Spider-80SG data acquisition system combined with the versatile EDM DSA software. This simple and efficient package for strain gage measurements can include the Spider-80Xi chassis, which scales up to 512 channels. Contact our team to schedule a demo or to learn more.

Alias Rejection and Alias-free Bandwidth

There are two steps for converting an analog signal into a digital signal – quantization in time (sampling) and quantization of amplitude. Any signal that goes through the sampling process is subject to the effect of aliasing. The common use of the word ‘alias’ is used to describe a false name or identity, which is similar to how the term is used in signal processing.

Multi-Resolution Overview Video

Watch Darren Fraser’s Multi-resolution Overview presentation from this year’s ESTECH 2021 conference. Viewers will receive a brief review followed by several practical application examples. The Multi-Resolution function is patented by Crystal Instruments.

EDM Modal Playback Analysis

EDM Modal software provides the Playback Analysis feature which allows users to import recorded time signals and process measurement data to obtain the related spectrum signals. This feature allows users to carry out all the field measurements in one attempt before post-processing and analyzing the measured data in detail on a lab PC.

Jeff Zhao, Ph.D.April 22, 2021Structural Dynamics Testing

New Vibration Visualization Video - featuring EDM Modal

The new Vibration Visualization video produced by Aakash Umesh Mange (Crystal Instruments Applications Engineer) features the creation of 3D models for modal analysis.