Encyclopedia

creep damage

thermal fatigue

thermal fatigue
Stages of thermal fatigue or blade creep on a typical turbine blade. In the primary stage the initial rate of creep decreases rapidly, in secondary stage the rate decreases more slowly or may be substantially constant and in tertiary stage, the rate increases rapidly and leads eventually to fracture.
A kind of metal fatigue caused by repeated heating and cooling. It is prominent in turbines where some heating or cooling takes place each time a power setting is changed. Also called creep damage. See also creep (ii).
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
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References in periodicals archive
In this study, AE tests were conducted under different loading rates on coal using the SHIMADZU AG-X250KN rock servo test machine and AE21C AE instrument to explore the effects of different moisture contents and the characteristics of coal creep damage by AE.
CREEP BEHAVIOR AND ACOUSTIC EMISSION CHARACTERISTICS OF COAL SAMPLES WITH DIFFERENT MOISTURE CONTENT
Shi, "Study on creep damage constitutive relation of greenschist specimen," Chinese Journal of Rock Mechanics and Engineering, vol.
Research on Rock Creep Characteristics Based on the Fractional Calculus Meshless Method
Prakash, "Creep damage characterization using non-linear ultrasonic techniques," ActaMaterialia., vol.
Nonlinear Electromagnetic Acoustic Testing Method for Tensile Damage Evaluation
"A Review of Methods to Estimate Creep Damage in LowAlloy Steel Power Station Steam Pipes", STRAIN, 45: 316-331, ISSN: 0039-2103.
Investigation of mechanical properties for carbon steels tubes serviced at high temperature after long time of operation
Electromagnetic acoustic resonance to assess creep damage in Cr-Mo-V steel, Japan Soc.
Acoustic nonlinearity of the planar slip in the Cu-Zn alloy subjected to low-cycle fatigue
* Permanently installed monitoring of creep damage (Imperial College) a Non-linear material inspection (University of Bristol)
Research that made it to the market
Operating at low frequencies reduced the self-healing effect and the effects of creep damage. Increasing the frequency to the point where temperature rise did not stabilize resulted in thermal induced failure that deviated significantly from the model.
Fatigue behavior and modeling of thermoplastics including temperature and mean stress effects
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