Files in this item



application/pdf3347494.pdf (3MB)Restricted to U of Illinois
(no description provided)PDF


Title:Tensile Fracture Mechanisms of Ferritic/martensitic Structural Materials
Author(s):Pan, Xiao
Doctoral Committee Chair(s):Stubbins, James F.
Department / Program:Nuclear Engineering
Discipline:Nuclear Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Materials Science
Abstract:X-ray measurements and analysis not only support the hypothesis of the association between critical stress and critical interfacial strength, but also offer a new method to determine the true strain/stress behavior during deformation. This method is called the Universal Micro-structural Geometry-corrected Model (UMGM) in this dissertation. Due to the development of tri-axial stress and severe distortion of grain structure in the necking region, it is a challenge to determine the true strain/stress curve, a critical input in finite element modeling (FEM) analysis. Previous scholars have developed several analytical methods to characterize true strain/stress behavior after necking merely based on geometry correction or direct linear extrapolation. Grounded with experimental data, the UMGM provides empirical validation for these existing methods.
Issue Date:2008
Description:178 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2008.
Other Identifier(s):(MiAaPQ)AAI3347494
Date Available in IDEALS:2015-09-28
Date Deposited:2008

This item appears in the following Collection(s)

Item Statistics