Shearography to Detect Defects in Laminar Structures
DEKRA performs shearography as advanced optical non-destructive testing method to detect defects in laminar structures, such as polymer composites, sandwich structures and other bonded structures.
About Shearographic Testing
Shearography is used as an advanced optical NDT method primarily to detect defects in laminar structures, such as polymer composites, sandwich structures and other bonded structures. Shearography is an active method, which means that it inspects the structure while submitted to a load (but still non- destructive) and that the result for an entire inspection area will be presented in real time. The primary advantages of the method are high inspection speed, it can be non-contact, and it can be used to detect certain defects not detectable with traditional methods. Examples of defects that can be detected with shearography are: disbonds, delaminations, cracked cores, crushed cores, kissing bonds, wrinkling, fluid ingress, porosity, cracks, repair defects and impact damage (BVIDs).
Shearographic Testing – Wind Power
The high demand for green energy causes an increase in the production rate of wind turbine blades. In a constant strive to increase the power output of wind turbines, the size of the blades continues to increase. With increasing blade sizes, NDT of blades during production and in the field become more important. Shearography has shown to be a very useful tool, as it can detect delaminations, disbonds and wrinkles.
Shearographic Testing – Marine
Many ships are made from composites. As the areas are large, a rapid NDT method as shearography is a good candidate when looking for inspection methods.
Shearographic Testing – Aerospace
With an increasing amount of composites being used in new aircraft, a rational NDT method such as shearography is being used more and more.
Cooperation with Dantec Dynamics
Dantec Dynamics is a manufacturer of optical measurement equipment for Material Testing. Leading companies within aerospace, defense, automotive, marine, and wind have been trusting Dantec Shearography systems for decades to address their challenging NDT applications.