Flexible hand held MR scanning array for cracks/flaws

Details Flexible hand held MR scanning array for cracks/flaws Flexible hand held MR scanning array for cracks/flaws

2008-05-20

2008-05-20

Aurora, Reena (Department: 2862)

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

C324S235000

Reexamination Certificate

active

07375514

ABSTRACT:
A non-destructive testing device has an excitation coil with a plurality of conductor ribbons attached to a flexible membrane. A frame supports the membrane and incorporates wheels for translation across a surface to be inspected and resilient suspension for maintaining the membrane with the excitation coil and wheels in intimate contact with the surface, the membrane flexing to maintain contact with a smoothly curved surface as found in aircraft structures. A magnetoresitive (MR) array is supported within the frame inserted in the membrane to be in close proximity to the surface. The MR array detects the magnetic field resulting from the eddy currents created by the excitation coil for identification of cracks or features beneath the surface under inspection.

REFERENCES:
patent: 4271393 (1981-06-01), Hansen et al.
patent: 5841277 (1998-11-01), Hedengren et al.
patent: 6150809 (2000-11-01), Tiernan et al.
patent: 2007/0100579 (2007-05-01), Rempt et al.

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