TY - JOUR
TI - REMAINING LIFE ASSESSMENT OF POWER PLANT COMPONENTS EXPOSED TO HIGH TEMPERATURE STATIONARY CREEP
AU - Grujić Biljana
AU - Sedmak Aleksandar S
AU - Burzić Zijah
AU - Pavišić Mirko N
JN - Thermal Science
PY - 1998
VL - 2
IS - 2
SP - 75
EP - 85
PT - Article
AB - Remaining life of high temperature cracked components has been analysed, using time dependent fracture mechanics parameters. As the most efficient parameter for stationary creep problems and simple
component geometry, the C* integral has been used, taking advantage of its complete analogy with the J integral, well established fracture mechanics parameter for elastic-plastic problems. In other cases, the
importance of detailed thermal analysis, including numerical evaluation of temperature fields based on accurately determined boundary and initial condition, is emphasized. Three-step assessment procedure
has been applied in order to evaluate the influence of material damage and initial crack length on steamline remaining life. The C* integral, as a crucial parameter in this procedure, has been evaluated using EPRI
procedure, developed for elastic-plastic problems, but applied here to stationary creep problem. The results indicate significant influence of material damage and initial crack length.