Notched tensile bars of a high strength structural steel were loaded to void coalescense. The resuIts show that the damage curve determined using radially loaded specimens is not valid for specimens under nonradial loading. The results of the experiments with different load histories of notched tensile bars show, that a single parameter criterion like a damage parameter is not sufficient to des...

This study conducts stress-controlled cyclic tension-tension tests from room temperature (RT) to 200 °C, at 50 °C intervals, on high-purity Cu films comprehensively understand the temperature-dependent fatigue life and related microstructural fracture characteristics. As evidenced by electron backscattering diffraction analysis, Ʃ3 boundary fraction decreases low-angle grain increases as increa...

Understanding crack growth behavior in engineering components subjected to cyclic fatigue loadings is necessary for design and maintenance purpose. Fatigue crack growth (FCG) rate strongly depends on the applied loading characteristics in a nonlinear manner, and when the mechanical loadings combine with environmental attacks, this dependency will be more complicated. Since, the experimental inv...

Abstract This paper deals with mathematical modeling of mold growth on wood. The logistic equation is used to model phenomena in changing environmental conditions. Microscopic coverage fraction the represent development a material surface over time. current state-of-the-art dynamic Finnish as reference for model. optimal values coefficient are estimated by simulations under constant conditions ...

transformation of land use-land cover change occurs due to the numbers and activities of people. urban growth modeling has attracted authentic attention because it helps to comprehend the mechanisms of land use change and thus helps relevant policies made. this study applied logistic regression to model urban growth in the ahvaz metropolitan area of khuzestan province in idrisi selva software a...

In this paper, the domain growth process in a novel kind of cyclic game is investigated by similation method. Different with the classical cyclic games, this process is called ”creation-annihilation process”, in which is just like the autocatalysis system. The results of numerical simulations show that the domain growth in such cyclic games with four or five states has a special feature: the gr...

The paper is devoted to the model of compact cyclic edge-coloring. This variant of edge-coloring finds its applications in modeling schedules in production systems, in which production proceeds in a cyclic way. We point out optimal colorings for some graph classes and we construct graphs which cannot be colored in a compact cyclic manner. Moreover, we prove some theoretical properties of consid...