Meet the Jury Milena Martarelli on Non-contact full field vibration measurements by Laser Doppler Vibrometry – The Continuous Scanning Modality and its applications

Arenberg Doctoral School is proud to invite you to Meet The Jury!

When internationally renowned experts visit KU Leuven as a member of a PhD Examination Committee, we like to seize this opportunity to give this expert a forum to a large audience. All members of Science, Engineering & Technology are most welcome to the Meet The Jury Lectures.

Prof. Milena Martarelli (Polytechnic University of the Marches, Italy) will give a lecture on “Non-contact full field vibration measurements by Laser Doppler Vibrometry – The Continuous Scanning Modality and its applications”.

Continuous Scanning Laser Doppler Vibrometry (CSLDV) was first introduced in the early 1990s and has since undergone substantial development in both its operating procedures and application fields, reaching a new level of technological maturity. Compared to traditional stepped scanning methods, where vibration data are collected from a limited number of fixed measurement points, CSLDV allows a single continuous laser scan to capture vibration information from many thousands of spatial locations on the same structure. This makes it similar to an image based technique, an approach that is increasingly adopted thanks to technology advances, particularly in sampling frequency (e.g., high-speed cameras, event-based cameras). Vibration mode shapes are obtained by combining temporal and spatial data, and increasing the number of sampled locations improves the spatial resolution of the results. The introduction of continuous scanning fundamentally changed the traditional view that spatial resolution depends directly on the number of discrete measurement points. With CSLDV, high-definition deflection shapes can be reconstructed from a single time-domain signal acquired along a continuously moving trajectory that covers the same surface typically measured using many fixed-point scans. In this approach, both the spatial distribution and the harmonic vibration response are encoded into a single modulated LDV signal, where the main vibration frequency and its sidebands represent the structural response along the scan path. The seminar will provide a historical overview of vibration measurement techniques, explain the theoretical principles and practical applications of CSLDV, and discuss the signal processing methods developed over the past decades to automate this technology, which has often been viewed as overly depending on experienced users.

Following the lecture, there will be opportunity for young researchers to interact with her.

• Venue: Instituut voor Mechanica, Aula E (00.77), Celestijnenlaan 300 , 3001 Heverlee
• Date: 14 January 2026 – 10:00 – 11:30
• Prof. Milena Martarelli is visiting KU Leuven on the occasion of the PhD defence of Xian Wu