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Crack resistant member and tower

  • US 8,959,864 B2
  • Filed: 04/03/2014
  • Issued: 02/24/2015
  • Est. Priority Date: 08/29/2012
  • Status: Active Grant
First Claim
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1. A crack-resistant member for preventing crack propagation in a tower comprising:

  • at least one insert attached to at least one removed portion at a predetermined location along a girth weld and adjacent a heat affected zone of the tower, the at least one insert;

    being essentially flush with the girth weld;

    being positioned perpendicular to a weld direction; and

    having a plurality of substantially linear edges, wherein the plurality of substantially linear edges;

    intersect the girth weld normal to the weld direction; and

    extend beyond the adjacent heat affected zones,wherein the at least one insert prevents fatigue crack propagation in the girth weld.

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