You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass
    STP1417

    Simulation of Grain Boundary Decohesion and Crack Initiation in Aluminum Microstructure Models

    Published: 01 January 2003


      Format Pages Price  
    PDF (280K) 14 $25   ADD TO CART
    Complete Source PDF (15M) 774 $275   ADD TO CART

    Cite this document

    X Add email address send
    X
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Abstract

    This research focuses on modeling the microstructure of aluminum and simulating the initiation of fatigue cracks along grain boundaries using a cohesive zone model. Initial observations about the use of the cohesive zone model and the grain boundary response were made using simulations of bicrystals and small regular polycrystals under simple tension loading. Next, statistically generated polycrystal samples were created and loaded, resulting in crack initiation along the grain boundaries. How simulations were conducted, and observations from the simulations of the initiation sights and propagation of decohesion are discussed. The simulation tool created to use cohesive zone models and statistical representations of polycrystals combine to predict fatigue crack initiation.

    Keywords:

    fatigue crack initiation, polycrystal, multi-scale, simulation, cohesive model


    Author Information:

    Iesulauro, E
    Graduate Research Associate, Cornell University, Ithaca, NY

    Ingraffea, AR
    Professor, Cornell University, Ithaca, NY

    Arwade, S
    Graduate Research Associate, Cornell University, Ithaca, NY

    Wawrzynek, PA
    Research Associate, Cornell Theory Center, Ithaca, NY


    Committee/Subcommittee: E08.05

    DOI: 10.1520/STP11102S