Features of eddy-current tests of stepped axial bores in rotors of turbines of thermal power plants

被引：0
|
作者：
Volkov, BI [1 ]
Temryukh, VM
Shkatov, PN
机构：
[1] OAO Ural Res Inst Thermal Technol, Chelyabinsk, Russia
[2] Moscow State Acad Instrument Bldg & Informat Tech, Moscow, Russia
来源：
RUSSIAN JOURNAL OF NONDESTRUCTIVE TESTING | 2001年 / 37卷 / 09期
关键词：
Power Plant; Local Variation; Signal Amplitude; Thermal Power Plant; Cylindrical Cavity;
D O I：
10.1023/A:1014935306021
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The paper reports on an investigation of parameters of the applied eddy-current transducer output in the presence of a cylindrical cavity with crack-like discontinuities and an interfering factor in the form of steps, i.e., local variations in the bore diameter. It has proven to be difficult to distinguish between a crack and a step when the recorded parameter is the signal amplitude; the method based on two parameters (amplitude and phase) allows one to get round the difficulties caused by the interfering factor.
引用
收藏
页码：621 / 626
页数：6
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