Polytec’s StrainProcessor is a measurement extension developed for easy FE model updating and for comparisons to calculated stress and strain distributions. It comprises a set of hardware and software components enabling a PSV-400-3D Scanning Vibrometer – a well established tool for full-field non-contact vibration mapping – to measure and analyze the dynamic strain and stress distribution on surfaces with high resolution and low noise.

The Scanning Vibrometer makes a series of non-contact deflection measurements on a predefined grid using the laser probe to characterize strain at each point instead of attaching individual strain gauges. Thus, the test set-up is fast and very repeatable with no mass loading from an attached transducer. Tests are fast and avoid the high cost of preparing and instrumenting the sample with strain gauges.