Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Residual stresses measured near the precrack tip in CT specimens of girth welds from (left) the vintage X52 pipe and (right) the X70A pipe. Note that σxx is parallel to the crack-growth direction, σyy is perpendicular to the crack-growth direction, and σzz is in the through-thickness direction (TD).
