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US 5,393,557 AGranted
Method for measuring electromagnetic properties
AssigneeNorthrop Grumman Corporation
InventorPhillip H. Darling, Jr.
Life of this patent
Estimating the term…
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AssigneeNorthrop Grumman Corporation
InventorPhillip H. Darling, Jr.
Estimating the term…
A system and method is provided for measuring the electrical resistivity of a member without physically contacting the member. The system includes an electromagnetic energy transceiver having a transmitting and receiving antenna. The antenna is positioned in close proximity to the member being tested. Electromagnetic energy, such as microwave energy, is transmitted by the transceiver at the member being tested. Reflected electromagnetic energy is received at the antenna that has been reflected by the member hack to the antenna. The transceiver then generates an output that is proportional to the reflected electromagnetic energy and, thus, is proportional to the non-reflected electromagnetic energy absorbed by the member being tested. The output signal can thus be used to indicate resistivity of the member to electrical transmission. The output signal can be connected to a drive or controller of a high temperature coating system to increase or decrease electrical resistivity of the member while it is being manufactured to thereby control or maintain a predetermined electrical resistivity of the member at a desired quality.
A method of controlling an apparatus adapted for applying a coating to a member comprising the steps of:
A method of controlling application of a coating to a sheet material comprising the steps of:
A method of testing an electromagnetic property of a member comprising the steps of:
Dependencies are inferred from the claim text.