Positioning and Quantification of Cracks by Sensors Using Algorithms

A crack or other type of damage causes a sharp discontinuity in the rotational displacement curve of a load-bearing structure. However, if the beam is not sufficiently loaded or the crack depth is very small, the discontinuity may be impossible to detect using conventional methods. To understand cracks in concrete, important parameters such as characteristic length, fracture energy, and critical crack width are used. In this project, the crack width is estimated as either crack mouth opening displacement (CMOD/COD) or crack tip opening displacement (CTOD). This project involves early detection of cracks by sensors and quantification of the cracks with help of algorithms. For the testing, three basic structural members, i.e., concrete cubes, beams, and T-beam are used. Internal cracks are detected by ultrasonic sensors with the help of IoT. A GPS module will be used for finding the position of the cracks and GSM module going to send the SMS to the phone whenever the cracks are formed. To quantify the cracks and show the position of the cracks, algorithms are used. Therefore, to monitor the damages at the early stage thereby avoiding the degradation of the structure, we are proposing a regular monitoring system.