Fatigue crack propagation under loading with negative R-values
β Scribed by Dipl.-Ing. H. Lange; Dr. T. Fett; Prof. Dr. D. Munz
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 353 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0933-5137
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
From a survey of the literature and experimental results obtained with two austenitic steels it is concluded that for fatigue crack propagation with negative Rβvalues the often used relation ΞK~eff~ = K~max~ underestimates the crack growth rate. Relations between ΞK~eff~ and ΞK are presented.
π SIMILAR VOLUMES
A multi-variable regression analysis is made of crack propagation data under flight simulation loading for the 2024-T3 and 7075-T6 alloys. The study is made using an equivalent effective stress range concept based on crack closure considerations. A two-variable regression model of the equivalent str
A mathematical model of fatigue crack propagation based on the crack closure concept is proposed. It allows prediction of fatigue crack growth under complex loading sequences on the basis of data obtained under constant amplitude and simple High-Low, Low-High loading sequences. The model explains th
The results of fatigue crack growth tests under a block loading consisting of four mean levels are analyzed in terms of equivalent constant amplitude loading concepts. The different models used to determine the equivalent loadings are based on the root mean square (RMS) method, a modified method bas