Multi-axis accelerance coupler - Qtrx
The Qsources multi-axis accelerance coupler is a smart extension of the Qish intergral exciter.
In combination with the Simcenter Software it allows the measurement in-plane of the measurement surface, or it allows the full 3D input accelerance matrix at locations where access would not have been possible otherwise. Based on the various excitation angles the input accelerances or cross transfer functions can be calculated.
In the first stage, the Qtrx is glued to the excitation location. The interface can be aligned with a dedicated tool and mounted using a common fast adhesive. The Simcenter Qsources Integral Shaker is mounted at multiple angles and transfer functions are measured consecutively.
The internal 3D accelerometer has a high resolution and in combination with the other features it allows accurate identification of input accelerances, even for very high impedance or very low accelerance of a test-structures at its interfaces.
Features
Allowing 3-axis direct- and cross accelerance (or impedance) measurements
Intended for limited access spaces, with a 20 mm footprint
Typical test-objects from 100 kg to 5000 Kg
Internal 3D acceleration sensing in the 5-1500 Hz freq. range
Patented solution for high accelerance or impedance resolution
To be combined with Qish integral shaker(s)
Full functionality in combination with Simcenter processing software
Measurement techniques
Transfer Path Analysis and sub-structuring
Inverse source or load identification
Experimental Modal Analysis
Statistical Energy Analysis and equivalent
Numerical model correlation and improvement
Main characteristics
Typical test-object mass 100 to 5000 Kg
Extended frequency range 5-1500 Hz**
Core frequency range 25-1500 Hz*
To be combined with Qish integral shaker(s)
Added coupled mass 25 gr
Footprint diameter 20 mm, 25 mm overall
Availability
The Qhsh shaker is marketed in cooperation with Siemens under the Simcenter Qsources product line
*What is core frequency range?
If a very high accuracy is essential it is advised to remain within the core frequency range for the typical test-object mass range. This is the range frequency range where the shaker was designed for and also has its highest force level.
**What is extended frequency range?
High accuracy in the extended frequency range is possible on the heavier objects. In some applications on lighter objects, like troubleshooting, fast application on many locations is needed. Or in some applications, like load identification and transfer path analysis, access is only possible with a small shaker. In those cases a lower accuracy or higher risk of error is accepted and the extended frequency range is used.
In all cases a reciprocity verification and two shaker coupling/decoupling verification can be applied to prevent misinterpretation of measurement results.