Online ultrasonic detection device and method for internal defect expanding of turbine engine rotor

A technology of turbine engine and ultrasonic testing, which is applied in measuring devices, using sound waves/ultrasonic waves/infrasonic waves to analyze solids, and using sound waves/ultrasonic waves/infrasonic waves for material analysis, etc., can solve the problems of low efficiency and poor effect of non-destructive testing High search efficiency, strong recognition ability, and efficient recognition effect
CN110174464AActive Publication Date: 2019-08-27ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2019-08-27

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Abstract

The invention discloses an online ultrasonic detection device and method for internal defect expanding of a turbine engine rotor. The device mainly comprises a probe mounting cover, an ultrasonic detection subsystem, a high-speed slip ring and an industrial control computer, wherein a phased array full focusing probe and a calibration phased array full focusing probe are arranged on a probe mounting disk through threads. Through adoption of an online ultrasonic detection technology for internal defects, online detection of the internal defects of the turbine engine rotor is realized in a rotating state; the problem that the detection needs to be performed when a workpiece is in a static state and after a test system is removed and disassembled is solved; the detection workload and the influence on the test schedule are lowered; the problem concerned with reasonable formulation of the detection period is solved; and the aim of effectively recognizing internal defects, cracks and changesthereof is fulfilled. The online detection method for internal defects of the turbine engine rotor has the characteristics of high internal defect scanning efficiency and high recognition capability,and the defects of the existing internal defect lossless detection technology are overcome.
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Description

technical field

[0001] The invention belongs to the technical field for indicating or measuring the characteristics of workpieces, in particular to an online non-destructive detection method for internal defect expansion of turbine engine rotors. Background technique

[0002] Turbine engine rotors have high speed, high temperature, and high safety requirements; at the same time, turbine engine rotors usually contain defects such as microcracks and microholes, which are easy to become a source of fatigue, greatly reducing fatigue life, and seriously threatening the safety and reliability of aeroengines. Therefore, it is necessary to carry out high-precision detection of its internal defects and their expansion, so as to provide support for the research of crack growth and damage tolerance of turbine engine rotors. When the turbine engine rotor stops, the cracks caused by internal defects close, which has the characteristics of weak detection signal and difficult identificatio...

Claims

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