Laser Doppler vibrometers (LDVs) are now well-established as an effective non-contact alternative to traditional contacting vibration transducers. Despite 30 years of successful applications, however, very little attention has been given to sensitivity to vibration of the instrument itself or to the vibration of any beam steering optics that might be used to guide the probe laser beam to the location of interest.
Recent research has established a theoretical basis for correction of affected measurements and this project will develop advanced but practical implementations based in this theory. The project offers the students an opportunity to gain broad expertise in vibration measurement and analysis, and an in-depth knowledge of the most exciting new technology for vibration measurement. Applications in structural health monitoring and MEMS serve to demonstrate LDV's applicability on structures of all sizes.
Measurements on rotors, in hearing and in acoustics demonstrate its versatility. Very recent new developments have seen innovations in multi-component and multi-channel instruments. The outcomes of this project have the potential to benefit all of these applications.