EXAMPLE OF AN APPLICATION OF AN ASSESSMENT PROCEDURE FOR DEFECTS IN PLANT OPERATING IN THE CREEP RANGE
- 1 February 1987
- journal article
- Published by Wiley in Fatigue & Fracture of Engineering Materials & Structures
- Vol. 10 (2) , 129-140
- https://doi.org/10.1111/j.1460-2695.1987.tb01155.x
Abstract
A worked example is presented to illustrate the application of a CEGB procedure for the assessment of defects in plant that operates within the creep range. The example chosen is a large cylindrical pressure vessel with a fully circumferential crack for which experimental results are available. The example demonstrates that it is straightforward to perform the calculations required in the procedure for the time for structural failure by continuum damage mechanisms, the time for crack incubation and the time for crack growth. It is predicted that crack incubation in the pressure vessel occurs at about one‐third of life with the remaining life being taken up by crack growth. The predictions are in close agreement with the experimentally observed incubation, growth and final failure times.Keywords
This publication has 5 references indexed in Scilit:
- The initiation of creep crack growthPublished by Elsevier ,2003
- CEGB ASSESSMENT PROCEDURE FOR DEFECTS IN PLANT OPERATING IN THE CREEP RANGEFatigue & Fracture of Engineering Materials & Structures, 1987
- Creep crack growth in steel at 838 K I: Behaviour at a constant loadMaterials Science and Engineering, 1986
- CRACK GROWTH IN PRESSURE VESSELS UNDER CREEP CONDITIONSPublished by Elsevier ,1978
- Examination of Fracture in a Pressure Vessel under Creep ConditionsPublished by ASTM International ,1978