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Modified Friction Device For Control Of Large-Scale Systems, Simon Laflamme, Douglas Taylor, Mohamed Abdellaoui Maane, Jerome J. Connor
Modified Friction Device For Control Of Large-Scale Systems, Simon Laflamme, Douglas Taylor, Mohamed Abdellaoui Maane, Jerome J. Connor
Simon Laflamme
Semi-active control of civil structures has shown to be promising at mitigating vibrations. Those systems typically perform significantly better than passive systems, and only necessitate small power to operate. Nevertheless, semi-active control devices are not yet accepted by the construction and structural engineering communities. Among impeding factors, semi-active devices are not perceived as sufficiently reliable or robust. In this paper, a new semi-active damping device based on existing reliable technology is proposed. It is composed of a stiffness element, a viscous damper, and a braking mechanism in parallel. The device, termed the modified friction device (MFD), is essentially a variable …
Soft Capacitive Sensor For Structural Health Monitoring Of Large-Scale Systems, Simon Laflamme, M. Kollosche, J. J. Connor, G. Kofod
Soft Capacitive Sensor For Structural Health Monitoring Of Large-Scale Systems, Simon Laflamme, M. Kollosche, J. J. Connor, G. Kofod
Simon Laflamme
Structural integrity of infrastructures can be preserved if damage is diagnosed, localized, and repaired in time. During the past decade, there has been a considerable effort to automate the process of structural health monitoring, which is complicated by the inherent large size of civil structures. Hence, a need has arisen to develop new approaches that enable more effective health monitoring.In this paper, a new sensing technique for damage localization on large civil structures is proposed. Specifically, changes in strain are detected using a capacitance sensor built with a soft, stretchable dielectric polymer with attached stretchable metal film electrodes. A change …