Software for Operational Modal Analysis



Case Study: Modal Analysis of the Guadiana Bridge using Crystal Clear SSI

We begin this newsletter by presenting the results of an Operational Modal Analysis made with the Crystal Clear SSI algorithms in ARTeMIS Modal Pro 4.0. The structure that we have analyzed is the cable-stayed Guadiana Bridge linking Portugal and Spain, see below:



The measurement campaign consists of 28 test setups using 4 reference sensors and 4 moving sensors. Below is an example of the very clear Stabilization diagrams produced by Crystal Clear SSI. Ten global modes were estimated and can be seen in the Mode List in the lower right corner. The torsional mode at 1.447 Hz is presented in the Geometry Window and Complexity Plot. The Modal Assurance Criterion (MAC) of all the global modes is also shown.



Please go to to see the complete case study and the rest of the modes.


Try ARTeMIS Modal Pro and the SHM Plug-ins Free of Charge on Your Own Data!

If you do not have ARTeMIS Modal Pro or the plug-in modules for SHM, then this is your chance to try them out for 30 days free of charge. Please contact us at and inform us who you are and what version of ARTeMIS you might currently have. We will then send you the necessary information for you to get started immediately. Please have a look at the following links for more information about ARTeMIS Modal Pro and the SHM modules:


We are running this campaign until July 1, 2015.


See you at SHMII 7 Conferences! 


SVS will be exhibiting at the SHMII 7 in Torino, Italy on July 1-3, 2015. We will be showing the new features of ARTeMIS Modal 4.0 and all the plugin modules for Structural Health Monitoring. See you in booth #10!



Structural Vibration Solutions A/S • Tel: +45 9635 4422 •

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