Method of impeding crack propagation
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United States of America Patent
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N/A
Issued Date -
Dec 21, 2006
app pub date -
Jun 5, 2006
filing date -
Jun 7, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of impeding propagation of a crack in a structure including installing at least one compression member on the structure at a predetermined distance from the crack to place the structure in compression and reduce the stress at the crack. The structure is preferably a pipe structure formed of two pipes butt-welded at a joint, and preferably, a pair of compression members are installed on the pipes on opposite sides of the crack. A pipe structure designed to impede propagation of a crack therein including two pipes butt-welded at a joint with a radial crack in one of the pipes and a compression member, in the form of a band, welded to one of the pipes at a position axially spaced from the crack to place the pipe in compression and reduce axial stress at the crack.
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