Inaudi, D. Primary Author mixed material bibliography Taylor & Francis 2012 en English

Computer Software

Structural health monitoring (SHM) is a process aimed at providing accurate and real-time information concerning structural condition and performance. Needs for structural health monitoring in the last decades ere rapidly increasing, and these needs stimulated developments of new sensing technologies. Distributed optical fiber sensing technology has opened new possibility in structural monitoring. Distributed deformation sensor (sensing cable) is sensitive at each point of its length to strain and temperature changes and cracks. Such a sensor is therefore able to record one-dimensional strain field and can be installed over the whole length of the structural members to be monitored (suspension cables, bridge girders, tunnel vaults, dam basis, etc.), and therefore provides for integrity monitoring, i.e. for direct detection, characterization (including recognition, localization, and quantification or rating), and report of local strain changes. These sensors are therefore not only able to measure strain (answering the “how much” question) but to localize damage areas (answering the “where” questions). This makes them ideal to monitor structure where the location of possible damage is a-priori unknown. As an example the sensor can detect and localize a fatigue crack appearing on a bridge girder or a leakage in a pipeline. Distributed sensing techniques and components based on Brillouin and Raman scattering are briefly introduced and their potential for integrity monitoring is discussed. Finally, several large-scale application examples are presented, including crack detection on steel girders, leakage detection on pipelines and crack localization in a tunnel. BRIDGE DAMAGE 624.21(063) Perpustakaan Direktorat Bina Teknik Jalan dan Jembatan Direktorat Jenderal Bina Marga - Kementerian Pekerjaan Umum (NPP: 3273244A00000001) 0000020781 My Library 20058 machine generated