VTShearoVis – Component testing under load for adhesion
- Vacuum-excited shearography is a non-destructive testing method
- Detection of the deformation of the component under load
- Particularly suitable for the characterisation of sandwich structures and adhesive joints
- Used in aerospace, automotive and wind energy industries
- Expandable with all other edevis excitation sources and software modules
The component is subjected to a changed ambient or internal pressure and the resulting deformation is monitored shearographically. The test is carried out either in a vacuum chamber or with a vacuum bonnet or vacuum window placed on the component. Defects locally reduce the stiffness and are detectable by the locally increased deformation. This also makes it possible to distinguish between areas with and without adhesion. In many cases, vacuum excitation comes closest to the actual component load in operation. Some defects, such as kissing bonds, are also detectable solely on the basis of locally increased deformation under mechanical excitation, whereas, for example, X-rays, ultrasonic waves and heat flows pass through the adjacent interfaces without interaction. In the case of pressure tanks, overpressure excitation can also occur.
- 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, GFRP, … on honeycomb, foam, balsa wood, …)
- Testing of adhesions
VTShearoVis software module for DisplayImg – the comprehensive acquisition and evaluation software with project tree and script interface especially suitable for VTShearovis measurements. Modularly expandable with all other excitation modules.
|Systems||VTShearovis 600||VTShearovis 7500|
|Pump capacity||0.6 m3/h||7.5 m3/h|
|Max. negative pressure||850 mbar||850 mbar|
|Testing area||300 x 250 mm2||300 x 250 mm2|
|Housing||19” / 3 HU||19” / 3 HU|