On Jan 11, 2008, at 7:29 PM, Paul Bowers wrote:
> <<Apparently this pressure vessel had reached fifty percent of the
> required test pressure when the shell
> ruptured.
I've seen a few of these. The fracture is typical of low toughness
steel and the low burst pressure (a stress level of about 20% of
the UTS) means that the cause of the failure was a good-sized crack
somewhere--probably in a weld. where'd you get the pictures?
Christopher Wright P.E. |"They couldn't hit an elephant at chrisw@skypoint.com | this distance" (last words of Gen.
.......................................| John Sedgwick, Spotsylvania1864)
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