0
TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

Lifetime Prediction of Components Including Initiation Phase

[+] Author and Article Information
Michael Besel

Institute for Materials Engineering, Kassel University, Kassel D-34109, Germany

Angelika Brueckner-Foit

Institute for Materials Engineering, Kassel University, Kassel D-34109, Germanya.brueckner-foit@uni-kassel.de

J. Eng. Gas Turbines Power 129(2), 542-548 (Aug 05, 2006) (7 pages) doi:10.1115/1.2436569 History: Received July 05, 2006; Revised August 05, 2006

The lifetime distribution of a component subjected to fatigue loading is calculated using a micromechanics model for crack initiation and a fracture mechanics model for crack growth. These models are implemented in a computer code which uses the local stress field obtained in a finite-element analysis as input data. Elemental failure probabilities are defined which allow us to identify critical regions and are independent of mesh refinement. An example is given to illustrate the capabilities of the code. Special emphasis is put on the effect of the initiation phase on the lifetime distribution.

FIGURES IN THIS ARTICLE
<>
Copyright © 2007 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

General flow chart of the computer code

Grahic Jump Location
Figure 2

Transmission case, boundary conditions, and FE mesh

Grahic Jump Location
Figure 3

Transmission case (detail b, see Fig. 2), elemental failure probabilities for N=600,000 and WC=0

Grahic Jump Location
Figure 4

Maximum local failure probability for different loading cycles and a maximum stress S=200MPa

Grahic Jump Location
Figure 5

Maximum local failure probability for different loading cycles and a maximum stress S=160MPa

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In