Year: 2013
Type: conference-paper
Abstract: The principal mechanisms of failure of high temperature components include creep, fatigue, creep-fatigue and thermal fatigue.In heavy section components, although cracks may initiate and grow by these mechanisms, ultimate failure may occur at low temperatures during startup-shutdown transients.Hence, fracture toughness is also a key consideration.Considerable advances have been made both with respect to crack initiation and crack growth by the above mechanisms.Applying laboratory data to predict component life has often been thwarted by inability to simulate actual stresses, strain cycles, section size effects, environmental effects and long term degradation effects.This paper will provide a broad perspective on the failure mechanisms and illustrate a few of the typical ones in boilers.
Author: R. Viswnathan
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1603403919