Simultaneous absolute and differential operation of eddy current bobbin probes for heat exchanger tube inspection

被引：0
|
作者：
Sullivan, SP [1 ]
Smith, SP [1 ]
Sharp, FL [1 ]
机构：
[1] Chalk River Labs, Nondestruct Testing Dev Branch, Components & Syst Div, Chalk River, ON K0J 1J0, Canada
来源：
MATERIALS EVALUATION | 2000年 / 58卷 / 05期
关键词：
Eddy current testing - Eddy currents;
D O I：
暂无
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Absolute/differential probes should be operated with current in the two bobbin coils flowing in phase with one another to optimize absolute signals. Differential probe signals are independent of the relative sense of current flowing in the coils. That is, differential signals from a probe with the current flowing in the same direction in both coils are identical to signals from a probe with the drive current in one coil 180 degrees out of phase with current in the other.
引用
收藏
页码：634 / 638
页数：5
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