|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Environmentally Assisted Cracking: Theory and Practice
||Relationships between the Galvanic Driving Force and Strain Energy Density Accumulation
||Andrea Nicolas, Alberto Da Silva Mello Junior, Michael Sangid
|On-Site Speaker (Planned)
Galvanic corrosion is the primary failure mechanism for sea-based structures, as it plays an important role in material degradation and structural integrity. We are currently in need of life prediction tools that unify chemistry with mechanics. To begin developing these tools, we need simulations capable of representing the actual heterogeneity inside the material, i.e. the microstructure, and thus can establish the critical points inside the material during galvanic corrosion. Therefore we are using an elasto-viscoplastic fast fourier transform (EVP-FFT) formulation to model the microstructure of the material, digital image correlation (DIC) to measure the surface strains, and optical profilometry to measure the surface degradation in columnar grain materials. The combined experiments and modeling is used to identify relationships between the microstructure and local micromechanical fields with the surface damage from galvanic corrosion given a variety of loading and environmental conditions.
||Planned: Supplemental Proceedings volume