|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Fatigue in Materials: Fundamentals, Multiscale Modeling and Prevention
||Microstructure-Sensitive Investigation of Aluminum 2024 Fatigue Damage Precursors using Acoustic Emission (Note: This presentation will also appear in the poster session.)
||Brian Wisner, Antonios Kontsos
|On-Site Speaker (Planned)
An experimental mechanics approach to fatigue damage detection utilizing a combination of in situ and ex situ microscopic investigations coupled with real time monitoring provided by Acoustic Emission (AE) information is discussed in context with microstructure-sensitive fatigue and fracture of Aluminum alloys. The coupling between quasi in situ microscopy with actual in situ nondestructive evaluation falls into the ICME framework and the idea of quantitative data-driven characterization of material behavior. Aluminum sharp notch specimens were produced and tested in both monotonic and low cycle fatigue loading regimes on both small scale testing devices and standard Materials Testing Systems (MTS). Load data were correlated with Digital Imaging Correlation (DIC), AE and microscopic observation data of microcracks, void bridging and slip bands. Preliminary results allow for the connection between Nondestructive Evaluation (NDE) and material state for microstructure-based damage diagnosis and prognosis models.
||Planned: Publication Outside of TMS (Indicate publication title and publisher if known.)