1
day
Seminar
30 April 2008
-
30 April 2008
BAWA
BS34 7RG
Residual stresses form a self-equilibrating stress distribution that exists in the absence of any mechanical loading. They are created during fabrication or by any loading which causes yielding of the material. Therefore residual stresses need to be considered in any Structural Integrity Assessment if only to demonstrate that they are insignificant.
For lower temperature operation of structures, the influence on fracture processes needs to be considered. At higher temperatures, when creep can occur, the relaxation of residual stress during service will induce additional damage over and above that due to the service loading. This is particularly true for creep-brittle materials.
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