Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]
5. analysis and testing techniques
6. interferometry

Anotations

Scope note:

Optical interferometry technique which involves study of the fringe pattern created when holograms capturing three dimensional information about the surface of the same object are reconstructed and superimposed. After a stress is applied to the object, its new surface geometry is compared with a previously recorded state.