Visual Rapid TestTM
Vibrant has introduced a new MEscope package called Visual Rapid Test™. This new method is faster, easier, more flexible, and less costly to implement than conventional ODS or modal testing methods. Since only the structural responses are acquired, it can be used for ODS testing of operating machinery, or for modal testing using an impactor or multiple shakers.
This package employs a new testing method called “Slinky™ testing”. Slinky™ testing only requires two vibration response sensors and as little as a 2-channel acquisition hardware system. Either sensor or both sensors can be moved between acquisitions, thus forming a chain of Transmissibility measurements called a TRN chain. The TRN chain preserves the magnitude & phase relationship between pairs of structural responses in the chain.
After a chain has been acquired, it can be seeded with either an Auto spectrum, Cross spectrum, Fourier spectrum, or FRF to yield a single-reference set of measurements. These measurements can then be used to extract ODS’s and mode shapes of the test article.