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Stochastic fatigue crack growth : an experimental studyMbanugo, Chinwendu Chukwueloka Ike. January 1979 (has links)
This thesis experimentally investigates the statistics (mean and variance) of the fatigue-cycle-dependent evolutions of both the crack tip front penetration's distribution function and the microscopic growth rate's distribution function, as a fatigue crack propagates to final fracture. A novel technique which facilitates striation counting and striation spacing measurements, is developed and used for extracting and analyzing the relevant statistical data for characterizing the stochastic fatigue crack propagation in polycrystalline metals. Two types of pure copper materials are investigated. / The investigation confirms the existence of the mean and variance of both the crack front penetration and its growth rate. Details of the variations of the mean crack penetration with respect to the dispersion of the crack front distribution and the mean growth rate, respectively, are established. Other contributions include the evaluation of the material characteristic associated with the transition intensity of the growth process. / These results are correlated with the predictions of the "Provan-Ghonem" theory in order to ascertain the validity of the linear Markov birth stochastic process, as a viable description of the fatigue crack propagation process in polycrystalline metals. The trend of the experimental results suggest a spatially correlated Markov process which accounts for both the strong nearest-neighbour-interactions between "points" along the crack front, and the boundary effects as a more viable representation of the fatigue crack propagation process.
Local behaviour of solutions of stochastic integral equationsAnderson, William J. (William James), 1943- January 1969 (has links)
No description available.
Stochastic fatigue crack initiation and propagation in polycrystalline solidsGhonem, Hamouda A. S. January 1978 (has links)
No description available.
One-dependence and k-block factorsGoulet, Marc 21 February 1992 (has links)
Graduation date: 1993
Equivalence of finite measures /Swanson, Leonard George. January 1971 (has links)
Thesis (Ph. D.)--Oregon State University, 1971. / Typescript (photocopy). Includes bibliographical references. Also available on the World Wide Web.
Some contributions to the fields of insensitivity and queueing theory /Rumsewicz, Michael P. January 1988 (has links) (PDF)
Thesis (Ph. D.)--University of Adelaide, 1989. / Includes summary. Includes bibliographical references (leaves 108-112).
The use of stochastic processes in the study of Australian exports /Ecker, Florian Josef. January 1974 (has links) (PDF)
Thesis (M. Ec.) -- University of Adelaide, Dept. of Economics, 1976.
Some statistical topics on sequential data assimilationLui, Chiu-sing, Gilbert. January 2008 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2008. / Includes bibliographical references (leaf 181-195) Also available in print.
One-dependence and k-block factors /Goulet, Marc. January 1992 (has links)
Thesis (Ph. D.)--Oregon State University, 1993. / Typescript (photocopy). Includes bibliographical references (leaves 35-36). Also available on the World Wide Web.
Policy gradient methods : variance reduction and stochastic convergence /Greensmith, Evan. January 2005 (has links)
Thesis (Ph.D.)--Australian National University, 2005.
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