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Damage identification in masonry structures with vibration measurements
Ramos, Luís F.; Lourenço, Paulo B.; De Roeck, G.; Costa, Alfredo CamposThe paper aims at exploring damage assessment in masonry structures at an early stage by vibration measurements. For this purpose, one approach is proposed combining global and local ND methods. To further evaluate the approach, one masonry tower in Portugal was studied together with one wall model in the laboratory. The model was built as reference, undamaged, state. Afterwards, progressive damage was induced...
Global damage identification based on vibration signatures applied to masonry s...
Ramos, Luís F.; Lourenço, Paulo B.; De Roeck, G.; Costa, Alfredo CamposThe present paper aims at damage assessment of masonry structures in an early stage. Two replicates of historical constructions were built in virgin state, one arch with 1.5 m span and one shear wall of 1 m2. Afterwards, progressive damage was applied and sequential mo-dal identification analysis was performed in each damage stage, aiming at finding adequate relations between changes in dynamical behaviour and ...
Monitoring historical masonry structures with operational Modal analysis : two ...
Ramos, Luís F.; Marques, Leandro; Lourenço, Paulo B.; De Roeck, G.; Costa, Alfredo Campos; Roque, João C. AlmendraTwo monuments in Portugal are being monitoring by the University of Minho: the Clock Tower of Mogadouro and the Church of Jerónimos Monastery, in Lisbon. Vibration sensors and temperature and relative air humidity sensors are installed in the two monuments. Operational modal analysis is being used to estimate the modal parameters, followed by statistical analysis to evaluate the environmental effects on the dyn...
Vibration signatures to identify damage in historical constructions
Ramos, Luís F.; De Roeck, G.; Lourenço, Paulo B.; Costa, Alfredo CamposThe paper aims at exploring damage assessment in masonry structures at an early stage by vibration measurements. One arch replicate of historical constructions was built as reference, undamaged, state. Afterwards, progressive damage was induced and sequential modal identification analysis was performed at each damage stage, aiming to find adequate correspondence between dynamic behaviour and internal crack growth.
Vibration based damage identification of masonry structures
Ramos, Luís F.; De Roeck, G.; Lourenço, Paulo B.; Costa, Alfredo CamposIn the process of preservation of ancient masonry structures, damage evaluation and monitoring procedures are particularly attractive, due to the modern context of minimum repair and observational methods, with iterative and step-by-step approaches. High-priority research issues related to damage assessment and monitoring are global non-contact inspection techniques, sensor technology, data management, diagnost...
Damage identification based on vibration measurements applied to masonry struct...
Ramos, Luís F.; De Roeck, G.; Lourenço, Paulo B.; Costa, Alfredo CamposThe present paper aims to explore damage assessment in the masonry structures at an early stage by vibration measurements. Two replicates of historical constructions were built in virgin state: one arch with 1.5 m span and one shear wall with 1.0 m2. Afterwards, progressive damage was applied and sequential modal identification analysis was performed at each damage stage, aiming to find adequate correspondence ...
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