Welds of high-temperature pressurised components act as preferential sites for creep
damage accumulation and will frequently be the life limiting feature. Type IV failures, where
cracking occurs between the heat affected zone (HAZ) and parent material, are of particular
concern in power station components. Typically damage will be characterised by locally
high strain rates in the HAZ and local grain boundary separation leading to crack initiation
and growth. A potential drop creep monitoring technique is suggested and demonstrated on …