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Unger, David James 2014-12-14T14:42:23Z 2014-12-14T14:42:23Z 10000-01-01 1981 1981 Similarity and general steady-state solutions of a recently developed stress-assisted diffusion theory are obtained. General transient solutions are obtained analytically for certain classes of stress distributions. For general stress distributions a perturbation method is employed to produce transient solutions. Under appropriate circumstances the derived solutions are reduced to previous formulae that have been sporadically proposed in the literature. Examples of interesting crack problems involving stress singularities as well as the elimination of singularities are considered. An equilibrium solution is utilized together with a straightforward physical argument to produce rationally two empirical formulae previously proposed in the literature to model embrittlement and stress corrosion cracking phenomena. This solution is further utilized to model embrittlement and stress corrosion cracking data more successfully than previous attempts. An appendix on certain preliminary elastodiffusive fracture criteria is given. Made available in DSpace on 2014-12-14T14:42:23Z (GMT). No. of bitstreams: 1 8127721.pdf: 2094356 bytes, checksum: 062115a59b2c77fcbbc60040919eaa6a (MD5) Previous issue date: 1981 Embargo set by: Seth Robbins for item 68698 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 68 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1981. http://hdl.handle.net/2142/68520 (UMI)AAI8127721 eng Applied Mechanics On the Theory of Stress-Assisted Diffusion text Theoretical and Applied Mechanics Theoretical and Applied Mechanics University of Illinois at Urbana-Champaign Dissertation Ph.D.