Buscar
Mostrando ítems 11-20 de 8545
Modeling 3-D desiccation soil crack networks using a mesh fragmentation technique
(Elsevier B.V., 2014-10-01)
The problem of desiccation cracks in soils has received increasing attention in the last few years, in both experimental investigations and modeling. Experimental research has been mainly focused on the behavior of slurries ...
Intracrystalline Mesoporosity over y Zeolites: PASCA Evaluation of the Secondary Cracking Inhibition in the Catalytic Cracking of Hydrocarbons
(American Chemical Society, 2017-02)
Two FCC catalyst prototypes were prepared using Y zeolite with different intracrystalline mesoporosity, which were used in the cracking of n-hexadecane (batch fluidized bed reactor, reaction time 4 s, temperatures 500 and ...
Modelling of fatigue crack growth following overloads
(1991-09-01)
In variable-amplitude loading there are interaction effects between the loading history and the crack propagation rate. The most important of these effects is the retardation in the crack propagation, which may raise the ...
Modelling of fatigue crack growth following overloads
(1991-09-01)
In variable-amplitude loading there are interaction effects between the loading history and the crack propagation rate. The most important of these effects is the retardation in the crack propagation, which may raise the ...
Modeling the growth of LT and TL-oriented fatigue cracks in longitudinally and transversely pre-strained Al 2524-T3 alloy
(2011-09-23)
The aluminum alloy 2524 (Al-Cu-Mg) was developed during the 90s mainly to be employed in aircraft fuselage panels, replacing the standard Al 2024. In the present analysis the fatigue crack growth (FCG) behavior of 2524-T3 ...
Modeling the growth of LT and TL-oriented fatigue cracks in longitudinally and transversely pre-strained Al 2524-T3 alloy
(2011-09-23)
The aluminum alloy 2524 (Al-Cu-Mg) was developed during the 90s mainly to be employed in aircraft fuselage panels, replacing the standard Al 2024. In the present analysis the fatigue crack growth (FCG) behavior of 2524-T3 ...
A situação do crack na cidade de São Paulo
(Universidade Tecnológica Federal do ParanáCuritiba, 2011-12-07)
The use of crack is common in large Brazilian cities, especially in São Paulo. Crack cocaine is a byproduct, made from a mixture of coca base paste with baking soda, which causes rapid dependence and has a devastating ...