Motivation to decrease weight and cost of composite-overwrapped pressure vessels used in space exploration leads to designs that challenge the current qualification standards and methods for predicting fatigue life of the structures. Namely, as thickness of the metallic, overwrapped liners is reduce
Environmentally influenced microstructurally small fatigue crack growth in cast magnesium
β Scribed by Ken Gall; Gerhard Biallas; Hans J. Maier; Mark F. Horstemeyer; David L. McDowell
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 543 KB
- Volume
- 396
- Category
- Article
- ISSN
- 0921-5093
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Fatigue strength and crack propagation behavior are critical attributes when designing structural components for high-integrity applications. Significant efforts have been directed in the past decade towards determining the effects of casting defects on fatigue response and many causal relationships
Three-dimensional finite element analysis using a crystal plasticity constitutive theory was performed to understand and quantify various parametric effects on microstructurally small fatigue crack growth in a AA7075 aluminum alloy. Plasticity-induced crack opening stresses (S o /S max ) were comput