Events

SESSION 3: Structural Health Monitoring – Bridges and Sensors – HBK Technology Days 2022 Virtual Seminar Series

HBK Technology Days 2022 – Virtual Seminar Series

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Value of Information from SHM for emergency management
Prof. Maria Pina Limongelli, Politecnico di Milano, Department of Architecture, Built Environment and Construction Engineering

The management of civil infrastructures in the aftermath of a disruptive event is a concern for decision-makers, which have to choose quickly among alternative actions with limited knowledge of the actual structural conditions.

Structural Health Monitoring (SHM) information can support these decisions. However, information comes with a cost and the relevant benefit must be assessed before the acquisition of the SHM system is decided. A powerful tool to estimate the benefits and optimize the SHM system design for specific applications is the Value of Information (VoI) analysis based on pre-posterior Bayesian analysis.

In the presentation, the theory will be shortly described and demonstrated through a couple of exemplary case studies.

From bridge inspection to population based structural health monitoring for bridges
Dr. David Hester, Senior Lecturer in Structural Engineering, School of Natural and Built Environment, Queen’s University Belfast

Bridges are an interesting set of structures from the point of view of infrastructure management. Firstly, they are a diverse set of structures, and secondly, they individually experience significant variation in the environmental conditions and loading.

The aim of this presentation is to provide an overview of how bridges are managed, the kind of sensing/monitoring that is sometimes undertaken and the trajectory of research in this area. Initially, we look at how short to medium-span bridges are typically managed via periodic visual inspections.

Subsequently, the presentation gives a sense of the kind of monitoring that has been used on bridges, as well as some of the sensing and data processing challenges that exist. Finally, the presentation looks at some of the very latest research in particular the idea of looking at bridges, or subsets of bridges, as a population of structures.

Optical sensor technology and applications for civil structures
Cristina Barbosa, Product Manager Optical Business, HBK FiberSensing

Structural Health Monitoring systems aim to control the integrity of a structure throughout its service life so that planned maintenance and serviceability extension safely maximize this asset’s profitability. Monitoring systems are expected to reliably operate through long periods and resist extreme events.

The use of optical sensors based on Fiber Bragg Grating technology is becoming an interesting choice for Structural Monitoring Systems. In this presentation, you will learn about the technology, product possibilities and current state of the art. The main challenges we are facing when monitoring civil structures will be identified and we will show how using optical technology can support overcoming them with concrete application examples.