ture. An Advanced Digital Integration Technique (ADIT) is developed and integrated with this procedure to post-process the measured data before being analyzed by ILS-EKF-UI. The stiffness parameters are the true indicator of the health of structural elements, such as beams, columns, bracings, foundations, etc. A reduction in stiffness parameter indicates the presence of defect. Interesting to note that Kalman filter is a predictive-
In fact, when a brand-new structural configuration having strong sym- bolic and aesthetic significance is put into place, there can be several uncertain factors that worry the owners. Designs can be sometimes faulty and often remain undetected until failure happens. There can be defects during construction process too. Without any doubt, SHM of such structures during and after construction can significantly reduce risk as defect would be identified at an early stage without exposing public to excessive risk.
corrective data analysis technology and was initially developed in 1958 during space mis- sion programs. It guided the Apollo 11 lunar module to the Moon’s surface. It now has applications in missile tracking, inertial guid- ance systems, GPS, and others The most appealing feature in SHM is the integration of multi-sensor network to enable real-time analysis, assessment, and control of damages before failure happens. The detec- tion, localization, and quantification of dam- ages are the three essential parameters that guide the comprehensive maintenance deci- sions made by the engineering profession. During the past decade, there has been sig- nificant progress on the development of inte- grated SHM strategies that brings multidisci- plinary engineering expertise together. This helps the profession in the transition from the traditional visual inspection approach to the quantitative data-based asset maintenance strategy. Such an integrated SHM approach benefits a variety of industries, such as civil infrastructure (bridges, buildings, roads, etc.), renewable energy (such wind turbines), automotive, aerospace, oil & gas (offshore platforms, pipelines), magnets and super- conductors, telescope support structures, semiconductor and biotechnology industries, industrial equipment (rotating machinery, bearings, etc.), and nuclear energy. Practicing SHM in industrial settings has also caused significant growth as part of fo- rensic engineering. Some industries have a developed consensus on designing structural performance monitoring plan correctly during the design stage. Nowadays, it is feasible to construct smart infrastructures with minimal maintenance cost and reduced insurance premiums through the collaborative efforts among asset owners, architects, engineers, structural monitoring consultants, and insur- ance companies.
Burj Khalifa in Dubai, UAE is a marvel of modern architecture and engineering. It has been monitored structurally since the construction stage.
34
csengineermag.com
may 2020
Made with FlippingBook Annual report