About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
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Symposium
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Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
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Presentation Title |
G-12 (Invited): Fatigue Crack Growth Behavior in Al-7075 under In-plane Biaxial Loading with Mixed-mode Overloads |
Author(s) |
Abhay K. Singh, S. Datta, A. Chattopadhyay, N. Phan |
On-Site Speaker (Planned) |
Abhay K. Singh |
Abstract Scope |
Engineering structures and materials are often exposed to a variety of multiaxial stress state during their service life, yet very limited studies have been conducted on multiaxial fatigue. Most of the existing studies focus mainly on investigating constant amplitude loading; however, in service conditions, the structures are frequently subjected to random or variable amplitude complex loading that can cause significant acceleration or retardation of the crack growth rate, which in turn affects the fatigue live of the structure. Despite this information, there is insufficient research available on the effect of overload excursion in multiaxial loading and there are none on the effects of complex mixed-mode overloads. The primary goal of this research is to characterize the in-plane biaxial fatigue crack propagation behavior of Al-7075 subjected to mixed-mode overloads of varying mode-mixity and to investigate the underlying microscale mechanisms that govern fatigue crack behavior at different lengths. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |