Crystal instruments
Crystal Instruments designs, produces, sells, and services hardware and software for machine vibration monitoring, dynamic measurement and environmental testing.
- 408-986-8880
- 408-834-7818
- info@go-ci.com
- 2090 Duane Avenue
Santa Clara, CA 95054
United States of America
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Dynamic Signal Analyzer & Data Recorder
Spider-20
The Spider-20 series of products are compact yet powerful data acquisition and dynamic measurement systems. These units provide four 24-bit precise high-fidelity input channels, and a unique software-selectable tachometer-input/signal-source output channel.
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Combined System Controller Software
Designed and manufactured by Crystal Instruments, the Spider-101i controller is a key element of the Sentek Dynamics THV Series AGREE (Department of Defense Advisor Group on Reliability of Electronic Equipment) chambers.
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Real Time Digital Filters
Real Time Digital Filters can be used to filter a measured signal in real time. Filter characteristics can be defined by the user to meet the requirements of a specific application. Real-time digital filters are applied in the data conditioning phase. The filters are designed with a graphic design tool and then uploaded to the front-end for real-time calculation. The graphic design tool defines the filter performance vertical axis with a dB scale. The horizontal axis is defined as relative frequency.
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EDM Post Analyzer Software
The Post Analyzer application is used for the post processing of previously recorded time stream data. Post processing includes data conditioning, Fourier transform operations, and specialized analyses such as order tracking and octave analysis.
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Single-Axis Shaker Vibration Testing
Modular Vibration Control Systems - Scales up to 512 Channels
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512 Channel Systems
Spider-80X/Spider-80Xi
The Spider-80X is designed for applications in three fields: dynamic data acquisition, vibration control, and machine monitoring. Each front-end features eight analog input channels and two channels that may be software selected as analog outputs for vibration control or tachometer inputs for the analysis of rotating machinery.
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Engineering Data Management SOoftware
EDM Modal
Engineering Data Management (EDM) is a PC-based software program designed for real-time data management and processing. This easy-to-use, Windows-native software manages the communication between the PC and all Crystal Instruments hardware platforms.
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MIMO Vibration Control Overview
MIMO Testing has gained a huge momentum in the past decade with the development of multiple shaker table systems, the availability of Multiple-Input Multiple-Output (MIMO) controllers, and the readiness of the standards (e.g., Mil STD 810G method 527 and IEST DTE 022 working group recommendation). The Multiple-Input Multiple-Output (MIMO) Control System includes the following:
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Operational Modal Testing
EDM Modal Operational Modal Testing (OMA Testing) includes a dedicated test setup and operation process flow using ambient vibration data. Using a large channel count data acquisition system (e.g., Spider- 80X or Spider-80Xi), the excitation method provides a much higher efficiency and accuracy for FRF measurements while minimizing local stresses on the test article.
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Vibration Visualization
It is difficult to imagine the actual vibration level and distribution from the numerical display or signals, which are basically a mathematical representation of the vibration experienced by the structure under test. Animating the structure’s deformation provides users with a clearer representation of the intensity from vibration.
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Geometry
EDM Modal Geometry/ODS/Animation is the primary EDM Modal software module, and is required for every EDM Modal system. This option provides fast and efficient structural model generation and full 3D visualization of test and analysis results.
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Structural Testing Application Examples Using EDM Modal
Illustrated below are some customer applications in varying industries who are using the hardware and software by Crystal Instruments to analyze and understand the structural properties of their test specimen(s). Analyzing the modal characteristics namely natural frequencies, damping and mode shapes of the test unit further helps in improving the design to enhance the mechanical behavior of the test unit.
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Whole Body Vibration Analysis
Whole Body Vibration (WBV) testing is a type of vibration analysis geared towards estimating the effects on the operator. There are three categories of concern for the operator, health and comfort, perception, and motion sickness. The goal for any WBV test is to ensure that under normal operating conditions there is no significant or lasting effect of the vibration experienced by the operator.
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Frequency Response Function
FRF
FFT Spectral Analysis. Frequency Response Function (FRF) is a commonly used measurement type of the Dynamic Signal Analyzer. FRF is defined as the ratio of response i.e. acceleration, velocity, or displacement with respect to the excitation force which is the reference.
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Hammer Impact Testing
EDM Modal Hammer Impact Testing provides the necessary features for a single-operator experimental modal test. The Hammer Impact GUI features an intuitive step-by-step process, allowing a user to easily go through the setup and then the testing.
