CRACK DETECTION SENSOR USING RFID-TAG AND ELECTRICALLY CONDUCTIVE PAINT(Structure)

Abstract

Radio Frequency IDentification (RFID) tag is a promising device for the management of a huge number of products at a very low cost. In the proposed system, an electrically conductive material is applied to a part of structure in which crack will occur. When a crack occurs, the electrically conductive material is broken, resulting in an increase in resistance of the measured current. Crack width can be estimated by the ability of an RFID transmitter to communicate with the tag. By bending tests of concrete specimens, the relationships between crack width and conductivity of the materials are examined.