8412 BK-Connect-Advanced-Sine-Measurements

Advanced Sine Measurements - 8412

Advanced Sine Software for real-time measurements of frequency response functions (FRFs) using stepped sine excitation for linearity studies and classical modal analysis.

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Advanced Sine Measurements with BK Connect is designed for easy set-up, acquisition and validation of FRFs and related functions using stepped sine excitation.

Stepped sine measurement is a technique, where sine excitation and corresponding measurements are made at fixed frequencies one at a time. Stepped sine measurements are often used as a complement to, or instead of, broadband random measurements, as it can provide more accurate results and allows for linearity studies.

This application emphasizes scalability and high productivity in the most time-consuming aspects of stepped sine measurements:

Setting up transducers (with Transducer Smart Setup), channel tables, excitation and analysis parameters
Fast acquisition of FRFs and related functions without compromising quality
Post-processing, displaying and reporting

BK Connect Advanced Sine Measurements is usually paired with BK Connect Modal Analysis Type 8420 and Advanced Modal Analysis Type 8420-A for a streamlined modal measurement and analysis system using a common, intuitive and highly customizable user interface. Combining Advanced Sine Measurements with Correlation Analysis Type 8421 adds test-FEA model correlation.

CHARACTERISTICS

With BK Connect Advanced Sine Measurements you can perform stepped sine measurements with single- or multi-shaker excitation. For multi-shaker excitation, the calculation of FRFs and related functions requires more measurements. Different stepped sine series definitions are supported for the highest possible flexibility and time efficiency.

This application supports closed-loop control. To protect the test item and avoid too-high response levels during the measurements, alarm and abort levels can be specified. The levels are taken directly from the data acquisition system to avoid any potential software delays.

SET-UP AND USAGE

Data acquisition modules are displayed in an interactive graphic visualization that gives simple channel selection, transducer verification and a clear overview of any potential issues such as transducer overloads and cable breaks.

For larger set-ups, channels can be listed and sorted according to status for quick resolution of issues. Specialists will appreciate the high level of flexibility in test setup and execution as well as the strong interface to For larger set-ups, channels can be listed and sorted according to status for quick resolution of issues. Specialists will appreciate the high level of flexibility in test setup and execution as well as the strong interface to finite element (FE) models for test planning and validation.

CAPABILITIES

Geometry-guided stepped sine measurements using BK Connect Modal Analysis Type 8420 or Data Processing Type 8403
Application controlled closed-loop measurements with user-defined immediate alarm and abort levels
Optimal, Full MIMO, Manual or Specific stepped sine series definitions
Tracked data sampling for reduced measurement time
Generator panel with amplitude sliders for manual control
Force and Control Signal monitor displaying amplitude and phase values with tolerance bands
Result Matrix tool for easy display, comparison and reporting of results
SI and imperial measurement units, as well as acceleration in 'g'

Acquiring leakage-free FRF measurements as input to very accurate modal analysis, for example, for ground vibration testing (GVT) of aircraft
Testing of large structures such as ships, trains and lorries by concentration of energy
Resonance surveys of critical modes
Forced response Operational Modal (ODS) analysis
Control and study of non-linearities of complex structures

File	Description	Type	Languages	Size
Data Sheet: BK Connect Structural Dynamics: Structural Measurements – Hammer and Shaker Type 8411, BK Connect Advanced Sine Measurements Type 8412 and BK Connect Geometry Type 8410 (bp1524)		Technical Document	English	5 MB

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Advanced Sine Measurements - 8412

CHARACTERISTICS

SET-UP AND USAGE

CAPABILITIES

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