OTShearovis – Shearography for testing the deformation
Shearography is a non-contact, non-destructive testing method that is very well suited for the characterisation of sandwich structures and fibre-reinforced plastic composites. The method is particularly used when other methods reach their limits. OTShearovis is expandable with all other Edevis excitation sources and software modules, offering the unique possibility to use both shearography and thermography on one platform.
- Optically excited shearography is a non-contact non-destructive testing method
- Detection of the deformation of the component under load
- Particularly suitable for the characterisation of sandwich structures and fibre-reinforced plastic composites
- Used in the aerospace, automotive and wind energy industries.
- Expandable with all other edevis excitation sources and software modules
Principle
During optical excitation, the surface temperature of the component is increased. Special halogen radiators are used for this purpose, which do not affect the image capture of the sensor. The heating leads to a small but shearographically detectable deformation. Defects that weaken the component mechanically locally and/or lead to a build-up of heat result in a locally increased deformation that can be seen in the shearogram. The temperature differences are usually only a few °C.
Applications
- Testing of CFRP and other fibre-reinforced composites (impacts, ondulations, delamination, connection of inserts, inclusions, resin pockets, …)
- Testing of sandwich components (e.g. aluminium, CFRP, GRP, etc., on honeycomb, foam, balsa wood, …)
- Testing of adhesions
OTShearovis Software
DisplayImg Professional
The comprehensive acquisition and evaluation software with project tree and script interface especially suitable for OTShearovis measurements. Modularly expandable with all other excitation modules.
Technical specification
| Lamp control | OTShearovis 4000 |
| Power output | 4.0 kW |
| Power supply | 230 V / 16 A |
| Overload protection | yes |
| Housing | 19″ |