A probabilistic model for creep-fatigue failure

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Journal of Pressure Vessel Technology

DOI:https://doi.org/10.1115/1.2842265· OSTI ID:442842

Harlow, D G; Delph, T J ^[1]

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1. Lehigh Univ., Bethlehem, PA (United States). Dept. of Mechanical Engineering and Mechanics

Creep-fatigue damage has long been recognized as one of the principal damage mechanisms in high-temperature pressure vessel and piping systems. Here, the authors outline a method for incorporating the scatter observed in creep rupture times and fatigue cycles-to-failure into a probabilistic model for creep-fatigue failure. They do this within the context of the well-known damage fraction summation rule. Various numerical methods for calculating the probability of failure for given creep-fatigue loading cycles are discussed.

• Sponsoring Organization: National Science Foundation, Washington, DC (United States)
• OSTI ID: 442842
• Journal Information: Journal of Pressure Vessel Technology, Journal Name: Journal of Pressure Vessel Technology Journal Issue: 1 Vol. 119; ISSN 0094-9930; ISSN JPVTAS
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
COMPUTERIZED SIMULATION
CREEP
FATIGUE
MATHEMATICAL MODELS
PIPES
PRESSURE VESSELS
THEORETICAL DATA