This report investigates five newly proposed creep-fatigue evaluation methods to improve the provisions on creep-fatigue evaluation of Mod.9Cr-1Mo steel in ASME Subsection NH (Class 1 Components in Elevated Temperature Service) of ASME Boiler and Pressure Vessel Code Section III: 1) Modified Ductility Exhaustion Method (MDEM), 2) Strain Range Separation Method (SRSM), 3) Approach for Pressure Vessel Applications (APVA), 4) Hybrid Method of Time Fraction and Ductility Exhaustion (Hybrid) 5) Simplified Model Test Approach (SMT).
ASME STP-NU-041-2011 history
2011ASME STP-NU-041-2011 UPDATE AND IMPROVE SUBSECTION NH �C ALTERNATIVE SIMPLIFIED CREEP-FATIGUE DESIGN METHODS