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System and method of measuring defects in ferromagnetic materials
专利权人:
The Charles Stark Draper Laboratory, Inc.
发明人:
DAVIS, Almir D.,TRINKLE, William J.,GUSTAFSON, Donald,BABCOCK IV, Philip S.,BERTHOLD, Richard T.
申请号:
AU20180203605
公开号:
AU2018203605(B2)
申请日:
2018.05.22
申请国别(地区):
澳大利亚
年份:
2018
代理人:
摘要:
A method for detecting defects in a ferromagnetic material includes disposing a plurality of magnetometers about a surface of the ferromagnetic material, wherein each magnetometer of the plurality of magnetometers is fixed in position, relative to the ferromagnetic material and using the plurality of magnetometers to sense a magnetic field generated by the ferromagnetic material at a first point in time. The method also includes generating data points of a first two-dimensional map from the sensed magnetic field, each data point corresponding to a respective location on the surface of the ferromagnetic material and representing strength of the sensed magnetic field proximate the location at the first point in time. The method uses the plurality of magnetometers to sense the magnetic field generated by the ferromagnetic material at a second point in time, later than the first point in time, and generates data points of a second two-dimensional map from the sensed magnetic field, each data point corresponding t
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