A comparison of high temperature defect assessment methods
- 1 January 1998
- journal article
- research article
- Published by Taylor & Francis in Materials at High Temperatures
- Vol. 15 (3-4) , 337-346
- https://doi.org/10.1080/09603409.1998.11689620
Abstract
Cracked high temperature components which are subjected to creep or creep-fatigue loading may fail by crack growth, net section rupture or a combination of both processes. In this paper, models are presented for describing these modes of failure in terms of fracture mechanics concepts, limit analysis methods and cumulative damage laws. It is shown that these models form the basis of a number of high temperature defect assessment procedures that are available for plant. These procedures are then applied to a semi-elliptical defect in a plate which is subjected to creep-fatigue loading. It is found that the predictions are sensitive to the crack initiation criteria assumed and the limit analysis solutions adopted.Keywords
This publication has 11 references indexed in Scilit:
- A Practical Method Based on Stress Evaluation (σd Criterion) to Predict Initiation of Crack Under Creep and Creep-Fatigue ConditionsJournal of Pressure Vessel Technology, 1995
- Crack initiation under creep and creep-fatigue on CT specimens of an austenitic stainless steelNuclear Engineering and Design, 1995
- Fracture mechanics in the creep rangeThe Journal of Strain Analysis for Engineering Design, 1994
- High Temperature Component Life AssessmentPublished by Springer Nature ,1994
- PREDICTION OF CREEP CRACK GROWTH INCUBATION PERIODSFatigue & Fracture of Engineering Materials & Structures, 1992
- Lifetime estimates of cracked high temperature componentsInternational Journal of Pressure Vessels and Piping, 1992
- Review of limit loads of structures containing defectsInternational Journal of Pressure Vessels and Piping, 1988
- Fracture at High TemperaturesPublished by Springer Nature ,1987
- An Engineering Approach to the Prediction of Creep Crack GrowthJournal of Engineering Materials and Technology, 1986
- Modes of failure under creep/fatigue loading of a nickel-based superalloyJournal of Materials Science, 1985