aSHEAR-NDT

Shearography (Electronic Speckle Pattern Shearing Interferometry, ESPSI) is an optical, non-destructive testing method that operates non-contact, over large areas, and is largely independent of the material being tested. Recent advances in spatial phase-shift shearography have significantly increased its robustness and made it suitable for industrial applications. This project addresses a key limitation of conventional systems: Linear shearing results in restricted measurement ranges and high effort due to the necessary repositioning of rotationally symmetric and curved components.

As part of the project, a sensor head close to a demonstrator will be developed and validated under realistic industrial conditions using rotational shearing. The project makes a significant contribution to the further development of optical metrology at the Trier site and is intended to improve non-destructive testing in safety-critical applications within the sealing, automotive, and aerospace industries. Through the early detection of defects, it also contributes to resource conservation and more sustainable production.