Thermal mechanical fatigue (TMF) is caused by combined thermal and mechanical loading where both the stresses and temperatures vary with time. This type of loading can be more damaging by more than an order of magnitude compared with isothermal fatigue at the maximum operating temperature. Material properties, mechanical strain range, strain rate, temperature, and the phasing between temperature and mechanical strain all play a role in the type of damage formed in the material. These types of loadings are most frequently found in start-up and shut-down cycles of high temperature components and equipment. Typically, design lives are a few thousand cycles and involve significant plastic strains.
Sign in or sign up to use these analyzers
Sign in or sign up to use these materials
|Copyright © 2008-2018 eFatigue LLC. All rights reserved. Disclaimer: Reasonable efforts have been made to deliver the highest quality information. But it is provided "as-is" and we make no warranties as to performance, merchantability, fitness for a particular purpose, or any other warranties whether expressed or implied. Under no circumstances shall eFatigue LLC, or any of its information providers, be liable for direct, indirect, special, incidental, or consequential damages resulting from the use or misuse of this information. The entire risk from using the results obtained from the information on this web site is assumed by user.|