... indicates degradation in creep life by the oxidation. The estimated 100,000 h creep rupture strength using regression analysis is increased by the elimination of long-term data degraded by the oxidation. Several metallurgical factors, such as the initial strength represented by the 0.2% proof stress...

... the adequacy of the probabilistic model also to predict the probabilistic Wöhler field for notched components. 12 12 2010 14 10 2011 13 01 2012 13 01 2012 extrapolation fatigue notch strength plates (structures) pressure vessels probability regression analysis steel stress...

... their effects on the A 1 ’s were expected to be slight. austenitic steel chemical analysis martensitic steel regression analysis reverse martensitic transformations tempering welds Tempering is an annealing process in which hardened or normalized steels are held at elevated temperatures...

..., separate models were generated for each group of data. The regression analysis was performed utilizing the program package statistica 6.1. Table 3 presents the resulting regression equations for the three groups of data. The original database used and the analysis carried out were in the United...

... model. The statistical distribution of output parameters and correlation between output and input variables is presented. Moreover, regression analysis is conducted to derive mathematical formulas of the output variables in terms of practically measured variables. The results can be used directly...

... elasticity fatigue life testing maximum likelihood estimation plastic deformation pressure vessels regression analysis Weibull distribution When local yielding is involved, the stress-based approach is not appropriate, so in these cases the strain-based approach proves to be a useful method...

... i 1 ) and downstream ( P i 2 ) pipeline segment pressures. Notation 11 01 2007 24 03 2008 21 01 2009 computerised monitoring leak detection pipelines production engineering computing recursive estimation regression analysis...

.... All of these results and models are entered into a computer software program for ready access. 10 May 2002 16 February 2004 18 08 2004 pipelines mechanical stability sand soil bending finite element analysis regression analysis buckling In order to carry out...