Method for the production of ultrasound waves for nondestructive materials testing and an ultrasound test instrument
First Claim
1. A method for the production of ultrasound waves for nondestructive materials testing of a workpiece, which comprises:
- providing at least one radio frequency coil disposed in an essentially uniform magnetic field, the at least one radio frequency coil having a coil axis disposed parallel to a surface of a workpiece; and
producing horizontally polarized transverse ultrasound waves in the workpiece due to an interaction of the magnetic field with eddy currents in the workpiece, the eddy currents supplied by the at least one radio frequency coil.
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Accused Products
Abstract
A method for the production of ultrasound waves for nondestructive materials testing of a workpiece. The method includes providing at least one radio frequency coil disposed in an essentially uniform magnetic field. The at least one radio frequency coil has a longitudinal axis disposed parallel to a surface of a workpiece. The method also includes producing horizontally polarized transverse ultrasound waves in the workpiece due to an interaction of the magnetic field with eddy currents in the workpiece. The eddy currents are supplied by the at least one radio frequency coil. The invention also teaches a device for implementing the method.
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Citations
16 Claims
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1. A method for the production of ultrasound waves for nondestructive materials testing of a workpiece, which comprises:
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providing at least one radio frequency coil disposed in an essentially uniform magnetic field, the at least one radio frequency coil having a coil axis disposed parallel to a surface of a workpiece; and producing horizontally polarized transverse ultrasound waves in the workpiece due to an interaction of the magnetic field with eddy currents in the workpiece, the eddy currents supplied by the at least one radio frequency coil. - View Dependent Claims (2)
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3. A method for the production of ultrasound waves for nondestructive materials testing of a workpiece, which comprises:
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producing a virtually uniform magnetic field associated with a surface of a workpiece; providing a plurality of radio frequency coils each having a coil axis, each of the coil axes disposed next to one another and virtually parallel to one another and with the surface of the workpiece; and providing each of the radio frequency coils with a radio frequency alternating current, a frequency of the alternating current being the same in all of the radio frequency coils for producing ultrasound waves in the workpiece. - View Dependent Claims (4, 5, 6)
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7. A test instrument for nondestructive materials testing of a workpiece using horizontally polarized transverse ultrasound waves, comprising:
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at least three magnets; and at least one radio frequency coil having a coil axis, said at least one radio frequency coil disposed with said coil axis parallel to a surface of a workpiece and disposed between said at least three magnets. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A test instrument for nondestructive materials testing of a workpiece using ultrasound waves, comprising:
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a magnet arrangement for producing a virtually uniform magnetic field; and a plurality of radio frequency coils each having a coil axis, said plurality of radio frequency coils disposed next to one another in said uniform magnetic field, and each of said coil axes disposed virtually parallel to one another and aligned with a surface of a workpiece. - View Dependent Claims (14, 15, 16)
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Specification