“SENsing SKIN’ for Monitoring-Based Maintenance of the Transport Infrastructure
Structural Health Monitoring (SHM) is expected to play a predominant role in the management of the transport infrastructure nowadays mainly because much of the expected growth in traffic demand will have to be accommodated on existing infrastructure with widespread signs of deterioration, while climate changes may negatively affect the infrastructure loading. Yet, SHM techniques continue to rely on point-based, as opposed to spatial, sensing requiring a dense network of these point-sensors increasing considerably the monitoring cost. Furthermore, conventional sensors fail at relatively low strains and their communication system is unreliable in extreme service conditions: thus, they do not provide a fool-proof alarm of an imminent structural collapse.
The European project, SENSKIN, responds to the above by developing an inexpensive, low power, wireless, skin-like sensor that offers spatial sensing of irregular surfaces (transportation bridges in particular). This sensor will be able to withstand and monitor large strains and to self-monitor/report. Emerging Delay Tolerant Networks technology will be also applied so that the output of the sensors is transmitted even under difficult conditions, such as, in the case of an earthquake, where some communication networks are inoperable. Additionally, SENSKIN as a monitoring system will be supported by a Decision-Support-System for proactive condition-based structural intervention under operating loads and intervention after extreme events. The SENSKIN technology will be implemented in the case of bridges and tested, refined, evaluated and benchmarked on an actual bridge. Following these, SENSKIN is expected to drastically reduce traffic disruptions from structural inspection and assessment works, decrease inspection and assessment costs, increase the safety of passengers and improve the working conditions of inspectors.
The Institute of communication and Computer Systems (ICCS) is the SENSKIN project Coordinator and technical manager while it will also lead the work on the collection of end-user requirements and the design of the system architecture. Furthermore ICCS will undertake the design and implementation of the energy storage and harvesting unit, the sensor packaging and the overall system integration.