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Magnetic flux density apparatus for, E.G., detecting an internal crack of a metal or a shape of the metal

  • US 6,683,452 B2
  • Filed: 11/30/2001
  • Issued: 01/27/2004
  • Est. Priority Date: 07/26/2000
  • Status: Expired due to Fees
First Claim
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1. A display apparatus of magnetic flux density for detecting an internal crack of a metal or a shape of the metal comprising:

  • a three-dimensional magnetic flux focusing unit installed near the metal, for concentrating magnetic flux generated by the metal;

    a magnetic flux density measurement unit installed near the magnetic flux focusing unit, for measuring changes in magnetic flux density concentrated by the magnetic flux focusing unit;

    a display unit electrically connected with the magnetic flux measurement unit, for real-time displaying and storing changes in the magnetic flux density; and

    wherein the magnetic flux focusing unit comprise a container having magnetic fluid.

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