Hi,
First time useing this forum.I have one confusion. Analytically,Von-mises stresses should be same along the circumference of a pressure vessel while under constant internal pressure but during hydrotest I observered a difference in values of around 150 to 200 MPa.Pl. note that stain gauges were on 4 points at 0,90,180,270 degrees on same line of circumference.
Hope experts will comment.If possible refer any informative site regarding Pressure vessel Hydrotest.
cheers,