Civil, Construction and Environmental Engineering, Electrical and Computer Engineering, Center for Nondestructive Evaluation (CNDE)
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2018
Journal or Book Title
Proceedings of SPIE
Research Focus Area
SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring
March 4-8, 2018
Recent advances in the fields of nanocomposite technologies have enabled the development of highly scalable, low-cost sensing solution for civil infrastructures. This includes two sensing technologies, recently proposed by the authors, engineered for their high scalability, low-cost and mechanical simplicity. The first sensor consists of a smart-cementitious material doped with multi-wall carbon nanotubes, which has been demonstrated to be suitable for monitoring its own deformations (strain) and damage state (cracks). Integrated to a structure, this smart cementitious material can be used for detecting damage or strain through the monitoring of its electrical properties. The second sensing technology consists of a sensing skin developed from a flexible capacitor that is mounted externally onto the structure. When deployed in a dense sensor network configuration, these large area sensors are capable of covering large surfaces at low cost and can monitor both strain- and crack-induced damages. This work first presents a comparison of the capabilities of both technologies for crack detection in a concrete plate, followed by a fusion of sensor data for increased damage detection performance. Experimental results are conducted on a 50 50 5 cm3 plate fabricated with smart concrete and equipped with a dense sensor network of 20 large area sensors. Results show that both novel technologies are capable of increased damage localization when used concurrently.
Society of Photo-Optical Instrumentation Engineers (SPIE)
Downey, Austin; D'Alessandro, Antonella; Ubertini, Filippo; and Laflamme, Simon, "Crack detection in RC structural components using a collaborative data fusion approach based on smart concrete and large-area sensors" (2018). Civil, Construction and Environmental Engineering Conference Presentations and Proceedings. 86.