METHOD AND SYSTEM FOR INSPECTING PLATE-LIKE STRUCTURES USING ULTRASOUND

摘要

A method of inspecting a plate-like structure (2) by means of ultrasound for detecting anomalies (3) in the structure, comprising: positioning at least three ultrasonic transmitting/receiving probes (4) in Hertzian contact with a surface of the structure (2) and in a polygonal configuration such that an inspection area (6) of the structure is defined by the configuration; successively drive one probe (4) at the time as an ultrasound transmitting probe generating an ultrasound wave propagating into a plane of the structure in the inspection area (6), while at least one of the other probes (4) is arranged to be used as an ultrasound receiver detecting a resulting wave provided by the ultrasound wave propagating through the inspection area (6); acquiring signals corresponding to waves detected by the second probes (4) and comparing the acquired signals with reference signals for a corresponding inspection area of a reference structure without anomalies.