Our Vibrography-systems are flexible Laptop based mobile turnkey tools for fast and full field in-service inspection, structural monitoring and automated non destructive testing.

Key applications are vibration measurement in combination with electrodynamic or piezo shakers using the forced normal mode excitation method (periodic excitation) and non destructive testing (NDT) in combination with dynamic, thermal heating and static loads (vacuum and internal pressure) for manual in-service inspection and robot automated Structural Monitoring Platforms (SMP).

In a frequency range of 0-50kHz, a quantitative interpretation of the results is possible. By making use of time averaging, a qualitative observation is not limited by any maximal frequency value.

The systems work full field and contactless at maximum sensitivity without need for vibration isolation. Resolution is a fraction of wavelength.

Furthermore, high sensitivity enables working with low excitation rates.

Our Vibrography testing system is based on the principles of Shearography (ESPI). It enables measuring and visualizing periodical vibration/oscillation.

Using Shearography for non destructive testing (NDT), e.g defects are identified by their inhomogeneous deformation gradients in response to an external load or excitation. The defects become visible by measuring their inhomogeneous deformation gradients. Depending on the spatial distribution of deformation the defect or the structure itself can be characterised by Shearography.

Vibrography
 

Copyright by isi-sys GmbH, T:++49 (0) 561-739798-0, info@isi-sys.com, last update on 12. jul 2010

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