System for monitoring structural cracks by adopting conductive patches

• Main Authors: QI CHANGJUN, JIN LIZAN, ZHANG XIANBIN, JIN LIWANG, WANG KUN
• Format: Patent
• Language: Chinese; English
• Published: 18.02.2020
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The invention discloses a system for monitoring structural cracks by adopting conductive patches. The system comprises a structural body (1), a plurality of conductive patches (2) mounted on the structural body (1), resistance measuring devices (3) connected with the conductive patches (2), a data acquisition system (4) connected with the resistance measuring devices (3), and an analysis monitoring system (5) connected with the data acquisition system (4). The conductive patches (2) include brittle insulating plates (21), conductive films (22) arranged on the brittle insulating plates (21), and electrodes (23) arranged at the two ends of the conductive films (22). According to the invention, the monitoring system employs the conductive patches composed of the brittle insulating plates andthe conductive films; the infinity of the resistance of the conductive patch can be measured through the fracture of the conductive patch, so that the crack existence at the position is detected. Since the brittle insulating