Journal article
Scale-Bridging Fatigue Monitoring in Magnesium Alloys
AIP conference proceedings
15 Mar 2012
Abstract
The objective of this research is to in situ monitor and quantify critical relationships between reversible/irreversible microstructural changes and fatigue loading of Magnesium (Mg)-alloys using an innovative setup combining digital image correlation with acoustic emission monitoring and a conventional load frame. Research on the fatigue behavior of Mgalloys has been significantly increased in view of the renewed interest on their applications. The limited crystallographic deformation mechanisms in hexagonal close-packed Mg-materials, including a-direction basal, prismatic and pyramidal slip, as well as c-direction pyramidal slip and deformation twinning/detwinning results to a distinct mechanical behavior upon cyclic loading, characterized by asymmetric tension/ compression yielding, anisotropic hardening and hysteretic loops. Fatigue testing data of AZ31 specimen that comprise grain scale observations, full-field deformation/strain measurements and acoustic emission activity are presented. The measured strain heterogeneities are associated with pre-and post-damage conditions, while the recorded acoustic emission provides means for continuous fatigue monitoring.
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Details
- Title
- Scale-Bridging Fatigue Monitoring in Magnesium Alloys
- Creators
- Antonios KontsosKavan HazeliPrashanth AbrahamJefferson CuadraEric SchwartzRaghavendra SaralayaTim Schmidt
- Publication Details
- AIP conference proceedings
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Identifiers
- 991019222889304721