Local approach contributions into the global view of the mechanical crack-tip environment formulation

• Autorzy: Katz Y. , Tymiak N. , Gerberich W. W.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Physically based understanding, associate fracture processes to local origins. Even so, in elastic-plastic solids the continuum analysis is mainly engaged with the macroscopic scale. Beside global views the current study emphasise the coupled aspects that are determined by local and material-based factors. Design/methodology/approach: Theoretical/experimental interfaces were adopted mainly cantered on interaction problems. Load interaction in static or dynamic loading and deformation/environment interactions were selected. For the load interaction cases, construction materials were investigated. A metastable stainless steel and hydrogen represented the environment interaction case. Experimentally, novel techniques have been utilized mainly on the nano scale including contact methodology and probe microscope visualization. Findings: The macroscopic background that was supplemented by local findings enabled to refine viable models in quantitative terms. Research limitations/implications: The nano mechanical approach allows additional options to be taken in terms of critical experiments or in order to improve multi-scale models. Originality/value: The nowadays contribution by small volume activities as related to complicated technological topics are highly promising. These avenues are only in early stages, with increasing incentives to advance capabilities assisting applications in nano technology.

Słowa kluczowe

EN

local approach; hydrogen; stainless steel; load interaction; stress; crack; model

PL

podejście lokalne; wodór; stal nierdzewna; interakcja obciążeń; naprężenie; pęknięcie; model

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 24, nr 1
• Strony: 162--165
• Opis fizyczny: Bibliogr. 17 poz., fot., rys., tab.

Twórcy

autor

Katz Y.

autor

Tymiak N.

autor

Gerberich W. W.

• Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455 U.S.A,

Bibliografia

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• [2] G.R. Chanani, B.J. Mays, Surface microcrack closure in fatigue: A comparison of compliance and crack sectioning data, Engineering Fracture Mechanics 9 (1977) 65-73.
• [3] Y. Katz, A. Bussiba, H. Mathias, ECF 2, EMAS, Warley, United Kingdom, 1982.
• [4] J.W. Hutchinson, Application of the local fracture stress model on the cleavage fracture of the reactor pressure vessel steels in the transition temperature region, Journal of the Mechanics and Physics of Solids 16 (1968) 13-31.
• [5] J.R. Rice, G.F. Rosengren, Plane strain deformation near a crack tip in a power-law hardening material, Journal of the Mechanics and Physics of Solids 16 (1968) 1-12.
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• [7] H. Vahoff, P. Noeumann, Acta Metallurgica et Materialia 28(1988)265.
• [8] M.J. Lii, X.F. Chen, Y. Katz, W.W. Gerberach, Dislocation modeling and acoustic emission observation of alternating ductile/brittle events in Fe-3wt%Si crystals, Acta Metallurgica et Materialia 38 (1990) 2435-2453.
• [9] S.H. Chen, Y. Katz, W.W. Gerberich, The crystallography of cleavage fracture in AI3SC, Philosophical Magazine A 63 (1991).
• [10] M. Kawahara, K. Tanaka, The retardation phenomenon of fatigue crack growth on HT80 steel engineering, Future Mechanics 8 (1976) 507-523.
• [11] X.F. Chen, Y. Katz, W.W. Gerberach, Overload transient effects on cyclic crack growth in Fe3wt%Si crystals, Scripta Metallurgica et Materialia 24 (1990) 2351-2356.
• [12] M. Lii, T. Foecke, X. Chen, W. Zielinski, W.W. Gerberach, The effect of low energy dislocation structures on crack growth onset in brittle crystals, Materials Science and Engineering A 113 (1989) 327-338.
• [13] T. Tabata, H.K. Birnbaum, Direct observations of the effect of hydrogen on the behavior of dislocations in iron, Scripta Metallurgica 17 (1983) 947-950.
• [14] D.G. Ulmer, C.J. Altstetter, Hydrogen-induced strain localization and failure of austenitic stainless steels at high hydrogen concentrations, Acta Metallurgica et Materialia 39 (1991) 1237-1248.
• [15] I. Gilad, Y. Katz, Diskussion des Phasenmuwandlung sverhaltens im Vergleich mit Ergebnisses elektrolytischer Wasserstoffbeladungen, Zeitscgrift fur Pysikalische Chemie, Neuefold (2006) 75-136.
• [16] Y. Katz, N.I. Tymiak, W.W. Gerberich, From bulk surfaces to thin films - a deformation/environment interaction study, Proceedings of the 8th Scientific International Conference „Achievements in Mechanical and Materials Engineering” AMME'1999, Gliwice-Zakopane, 1999, 285-286.
• [17] Y. Katz, N.I. Tymiak, W.W. Gerberich, Nano-mechanical Probes as New Approaches to Hydrogen/Deformation Interaction Studies, Engineering Aspects of Hydrogen Embitterment of the Engineering Fracture Mechanics 68 (2001) 619-646.