It’s obvious that corrosion can reduce the mechanical integrity of different materials through chemical effects and attacks. For e.g, the presence of hydrogen sulfide has been found to reduce the fatigue life of offshore riser materials, and in the presence of a notch (that acts as an initiation point for corrosion fatigue) the fatigue performance can be decreased too.
We have developed customized test facilities for characterizing the performance of pipeline materials in corrosive environments. Full-thickness fatigue specimens are machined from riser pipes to preserve through-thickness residual stresses and to capture welds in joined pipe.