Statistical Modeling of Fatigue Crack Growth

Authors

Ignacio Guerra
Tarun Goswami, Wright State University - Main CampusFollow

Document Type

Article

Publication Date

2002

Abstract

The objective of this research is to fit normal and lognormal distributions to fatigue crack growth rate (da/dN) data and present the data in terms of cumulative frequency distribution (f (x)) and a variant of da/dN and mode I stress intensity factor range (ΔΚ), z. The probability density functions (F(da/dN)) were also plotted for the data. The data was compiled from open literature, conducted on a hot section turbine disk material Inconel 718 under a North Atlantic Treaty Organization (NATO) project, through the Advisory Group on Aerospace Research and Development (AGARD). Incomel 718 was tested at 650°C utilizing various specimen geometries. The f(da/dN) and F(da/dN) were plotted with respect to ΔΚ for 33 test specimens.

Comments

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

Repository Citation

Guerra, I., & Goswami, T. (2002). Statistical Modeling of Fatigue Crack Growth. Journal of the Mechanical Behavior of Materials, 13 (5-6), 315-331.
https://corescholar.libraries.wright.edu/bie/147

DOI

10.1515/JMBM.2002.13.5-6.315