The creep residual life of aged boiler tube is evaluated by creep rupture tests using samples of used tube. Test data are analyzed by time-temperature parameter (TTP) method. However, these are some problems with the conditions of creep rupture tests and the analytical method of test date. A revised method to solve these problems is proposed as follows : ( 1 ) Test stress and temperature are selected based on the principles of the TTP method. The maximum temperature is raised to reduce the stress to operating conditions. ( 2 ) Both optimum TTP and constant for the test data are automatically selected and best fitting curves for the stress-TTP relationship are calculated using ISIJVAMAS creep rupture data analysis software.
|Number of pages||6|
|Journal||Ishikawajima-Harima Giho/IHI Engineering Review|
|Publication status||Published - 1996 Dec 1|
ASJC Scopus subject areas
- Mechanical Engineering