Good structural analysis starts with good data! For that reason, all the tools for efficient and accurate acquisition have been integrated into our structural solutions, state of the art analyzer technology and applied user interface.
Impact hammer acquisition
With good tools, it is so much easier to get good quality modal data with an impact hammer acquisition: - online validation based on the coherence, FRF and Force spectrum, gives you all the information you need to validate your hammer test, check out the data and decide if you want to move on. - Ever done a hammer acquisition and forgot the number of the next impact point? The sequencer guides you through the test. A high number of channels will allow you to acquire more degree of freedom in only one impact and save time for the test.
shaker acquisition
Shackers are used for large structure excitation. For these applications, the analyzer can generate up to 6 output signals. To cover most of the cases, a large range of signals can be generated simultaneously (sinus, chirp, random). Moreover, you can choose which input as the reference in the computation of the cross spectrum's matrice.
Modal Software
OROS Modal 2 is a powerful and easy-to-use solution to perform a complete modal analysis. This software can be used in most of the cases, from the experimental approach to a more R&D application through 3 dedicated modules: ODS (Operating Deflection Shape), EMA (Experimental Modal Analysis) and OMA (Operational Modal Analasis).
Application Note
Application of Operational Modal Analysis to a highway bridge, using OROS Modal 2
Ambient response measurements of a well-known Z24 bridge are applied as a case study for operational modal identification using Frequency Spatial Domain Decomposition (FSDD) technique, implemented in OROS Modal 2. Z24 bridge is an old Swiss bridge over passing the national highway between Bern and Zurich. It is a traditional pre-stressed concrete box girder bridge with main span of 30m and two side spans of 14m, and supported by 4 piers clamped into the girder. OMA was conducted using response measurements subject to traffic excitation. Data was obtained from 9 accelerometers sets: 8 with 33 channels and 1 with 27 channels. 3 references sensors were adopted including 1 unidirectional and 1 3D sensor. Read more... requires first registration on myOROS
