Nondestructive testing system and method for fatigue cracks of orthotropic steel bridge deck

The invention discloses a nondestructive testing system for fatigue cracks of an orthotropic steel bridge deck, the nondestructive testing system comprises an embedded RFID electronic tag for detecting and recording steel bridge deck fatigue crack information and transmitting the information to a reader-writer through RFID near field communication; the reader-writer which provides energy for the electronic tag, performs wireless communication and can read or write tag identification codes and detection information; an upper computer which is mainly used for providing instructions for the reader-writer and displaying, storing and processing label information returned by the reader-writer; and a mobile carrier which is used for carrying the reader-writer and the upper computer and carrying out fatigue crack detection during movement. The invention further discloses a method for detecting the fatigue cracks of the orthotropic steel bridge deck based on the nondestructive testing system. According to the inventio