Introduction
Advancements in optical measurement techniques are revolutionizing infrastructure and mobility applications. This workshop will explore how cutting-edge optical technologies are enhancing structural monitoring, autonomous vehicle sensing, and signal processing in civil engineering. Bringing together experts from academia and industry, this session will showcase the latest research, real-world applications, and hands-on demonstrations of state-of-the-art optical measurement solutions. Attendees will gain insights into how these techniques can be leveraged to improve safety, efficiency, and reliability in infrastructure and mobility sectors.
Introduction and Welcome (15 minutes)
Prof. Benjamin Halkon will open the workshop with an introduction and an overview of the importance of optical measurement techniques in Infrastructure & Mobility research and industry.
Key Presentation 1 (20 minutes)
Signal Diversity for Reducing Dropouts and Speckle Noise
Prof. Christian Rembe, Technische Universität Clausthal, Germany
Prof. Rembe will discuss the challenges of speckle noise and signal dropouts in laser Doppler vibrometer or extensometer measurement, especially for targets with in-plane movements. The developed signal diversity solution is characterized theoretically and tested experimentally. The findings highlight the benefit of signal diversity in improving the signal quality, thus enhancing the robustness and applicability of laser Doppler vibrometers or extensometers.
Key Presentation 2 (20 minutes)
Differential Laser Doppler Vibrometer Measurements Using Flyable Mirrors for The Vibration Assessment of Remote Structures
Dr. Prof. Benjamin Halkon, University of Technology Sydney (UTS), Australia
Dr. Halkon will introduce innovations in the unmanned aerial vehicle-mounted “flyable mirror” technology for remote vibration measurement. His research tackles the challenges in compensating the self-vibration noise using the differential laser Doppler vibrometer. Measurements under different vibration scenarios show the effectiveness of the technology and its potential for complex real-world applications.
Key Presentation 3 (20 minutes)
Mitigating Speckle Noise in Train-borne Laser Doppler Vibrometer for Monitoring Rail Infrastructures
Dr. Yuanchen Zeng, Delft University of Technology, the Netherlands
Dr. Zeng will present the application of laser Doppler vibrometer on moving vehicles to monitor railway track vibrations under operational conditions. The severe speckle noise caused by the scanning of rough surfaces is mitigated by developing a post-processing denoising method. Through laboratory and field measurements, the effectiveness of the method across varying scanning speeds is demonstrated, and its applications are showcased.
Panel Discussion (30 minutes)
Chaired by Prof. Steve Vanlanduit
The panel discussion will bring together all speakers for an engaging session of Q&A and dialogue with the audience, fostering collaboration and idea exchange.
Hands-On Demonstrations (60 minutes)
Participants will have the opportunity to engage in a session including:
A demonstration of speckle noise in LDV signals when scanning different engineering surfaces
A demonstration of self-vibration noise compensation of LDV with a flyable mirror
Why Attend?
This workshop offers a unique opportunity to:
- Gain insights into cutting-edge research and practical applications.
- Participate in interactive demonstrations of advanced optical inspection tools.
- Connect with professionals and researchers working in infrastructure and related industries.
- We look forward to welcoming you to this engaging and informative session!