Why Does MDMT Increase with Nominal Wall Thickness?
Why Does MDMT Increase with Nominal Wall Thickness?
(OP)
In UCS-66 of the ASME BPVC SEC VIII DIV I, the figure used to determine the lowest MDMT without impact testing says that the MDMT without impact testing increases with increasing nominal wall thickness. What is the physics behind this? Why would a thinner wall pressure vessel be less susceptible to brittle fracture at low temperature than a thicker one of the same material?





RE: Why Does MDMT Increase with Nominal Wall Thickness?
cheers,
gr2vessels
RE: Why Does MDMT Increase with Nominal Wall Thickness?
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdoweb/
RE: Why Does MDMT Increase with Nominal Wall Thickness?
RE: Why Does MDMT Increase with Nominal Wall Thickness?