Detection of creep degradation by ultrasonic testing

Zavadil, Tomáš; ATG - Advanced Technology Group; Czech Republic

Zavadil, T.; Advanced Technology Group; Czech Republic

ID: ECNDT-1003-2018

Creep is one of the main degradation processes of industrial sites operated at high temperatures in power and petrochemical industry. Some ultrasonic properties as the ultrasonic waves’ velocity are sensitive to change of material properties due to thermally induced degradation processes. The article discusses possible applications of ultrasonic testing to detect creep degradation process. Detectability of the areas under creep on real industrial parts in working conditions is achieved by ordinal means of evaluation. The methodology may help with selection of potentially critical areas on pressure equipment under operation prior its further investigation while performing e.g. residual life assessment.