6. Conclusion

Holographic interferometry is the method of choice for vibration analysis, providing full-field, non-contact measurements, high point density and sub-micrometer accuracy. Ultra-fast image sensors now make it possible to record transient phenomena at their full spatial and temporal scale of evolution. The recent emergence of graphics processing units (GPUs) has considerably reduced hologram post-processing times, delivering data at rates compatible with today's requirements.

The scientific maturity of digital holography now makes it possible to address complex problems encountered in vibration and acoustics, such as fluid-structure coupling due to aeroacoustic excitations, friction problems, crackling and any problem linked to non-stationary excitations in time and space.

Future developments are geared towards greater technological maturity,...