Non-destructive test apparatus
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United States of America Patent
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Jan 10, 2012
Grant Date -
Apr 22, 2010
app pub date -
May 8, 2009
filing date -
Oct 16, 2008
priority date (Note) -
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Abstract
The present invention provides a non-destructive test apparatus which can be applied not only to a structure in dry conditions but also to a structure constructed under water or in a location to which it is difficult for a worker to gain access. The non-destructive test apparatus includes a support frame which is disposed adjacent to the target structure and has a vertical guide rail, and a vacuum box which moves upwards or downwards along the guide rail of the support frame. The vacuum box is attached to the target structure and creates a vacuum therein. The non-destructive test apparatus further includes a hoist which is provided on the upper end of the support frame to move the vacuum box upwards or downwards, a fastening unit which fastens the support frame and the vacuum box to the target structure, and a vacuum pump which creates a vacuum in the vacuum box. The non-destructive test apparatus further includes a defect detecting unit which measures a strength of vacuum in the vacuum box to determine whether the target structure is defective, and a control unit which controls the elements.
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