NDT

Lamb wave tests are an adequate method for analyzing light-weight structures like carbon fiber-reinforced plastic (CFRP) used for the aviation industry. When it comes to fiber-reinforced composites, it is extremely important that damage such as delamination or cracks are detected and localized in good time – both in production and during operation. “Lamb waves” – surface waves that propagate on thin plate structures – play a major role in non-destructive materials testing, since they interact with different types of material faults, which makes damages visible.

PSV Polytec Scanning Vibrometers are ideal for designing component-integrated sensor networks, which are increasingly being used in critical structural elements, including aircraft, so as to continually monitor them during operation (structural health monitoring). These full-field scanning vibration sensors have become the number one development tools for adapted materials testing methods. The non-contact systems visualize the temporal propagation of Lamb waves with a high spatial resolution. The entire 3D vibration vector is recorded for each scan point, so that the typical S and A waves are broken up during the analysis. Laser vibrometers are thus indispensable for you as tools for researching Lamb waves and developing methods that are suitable for industrial purposes.