CRACK INSPECTION METHOD OF ROTOR BLADE OF TURBO ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a crack inspection method of rotor blades of a turbo engine, inspecting a crack simply and efficiently.;SOLUTION: The crack inspection method of blades (12) of a rotor (10) of a turbo engine is described as follows: the rotor having the blades (12) mounted on a rotor base body (11) is provided; each blade (12) mounted on the rotor base body (11) for crack inspection is excited to be rocked one by one separately and continuously with time intervals; then, frequency spectrums formed for each excited blade (12) are recorded, and a middle value is calculated from the recorded frequency spectrums, and each recorded frequency spectrum is compared with the middle value; and resultantly, when each frequency spectrum of the blades is defected from the middle value in the impermissible degree, it is guessed that the blade (12) has a crack or possibly has a crack.;COPYRIGHT: (C)2011,JPO&INPIT