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  • 1
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    Method and apparatus for using magneto-acoustic remanence to determine embrittlement (1992)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A method and apparatus for testing steel components for temperature embrittlement uses magneto-acoustic emission to nondestructively evaluate the component are presented. Acoustic emission signals occur more frequently at higher levels in embrittled components. A pair of electromagnets are used to create magnetic induction in the test component. Magneto-acoustic emission signals may be generated by applying an AC current to the electromagnets. The acoustic emission signals are analyzed to provide a comparison between a component known to be unembrittled and a test component. Magnetic remanence is determined by applying a DC current to the electromagnets and then by turning the magnets off and observing the residual magnetic induction.
    Keywords: STRUCTURAL MECHANICS
    Format: application/pdf
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