METHOD AND SYSTEM FOR DIAGNOSISING DEFECT DEGREE TO ELECTIC POWER STATION INSULATION PIPE

摘要

PURPOSE: A system and a method for diagnosing the degree of a defect in generator pipes are provided to receive and analyze information about asymmetrical elements. CONSTITUTION: A system(100) for diagnosing the degree of a defect in generator pipes comprises a variable angle wedge unit(110), a combo converter unit(120), and a defect analyzing unit(130). The variable angle wedge unit creates ultrasonic guided wave signals which are suitable for a torsional mode and a bending mode. The combo converter unit receives torsional mode signals and bending mode signals. The ultrasonic guided wave signal is reflected from an axially symmetric structure by corresponding to the ultrasonic guided wave signal. The bending mode signals are reflected from the non-axially symmetric type structure with the torsional mode signals.