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Effects of macro and microstructure of aluminum alloy AA 6063-T6 with TIG-AC welding process with unbalanced rectangular wave
(2017-01-01)
The use of the rectangular wave in the TIG-CA welding process for aluminum alloys allows numerous possibilities of frequency control, wave amplitude variation and positive or negative current for the same wave cycle. The ...
TrieMotif: a new and efficient method to mine frequent k-motifs from large time series
(Institute for Systems and Technologies of Information, Control and Communication - INSTICCLisboa, 2014-04)
Finding previously unknown patterns that frequently occur on time series is a core task of mining time series. These patterns are known as time series motifs and are essential to associate events and meaningful occurrences ...
Fold, transcritical and pitchfork singularities for time-reversible systems
(World Scientific Publ Co Pte Ltd, 2005-01-01)
This paper deals with a class of singularly perturbed reversible planar vector fields around the origin where the normal hyperbolicity assumption is not assumed. We exhibit conditions for the existence of infinitely many ...
Straightforward systematic approach for fuel efficiency and emissions assessment in automotive systems
(2011-12-01)
At this time, each major automotive market bares its own standards and test procedures to regulate the vehicle green house gases emissions and, thus, fuel consumption. Hence, much are the ways to evaluate the overall ...
A multiaxial fatigue damage model for isotropic materials
(2020-01-01)
This paper presents a novel damage mechanics based failure model enabling the prediction of low cycle fatigue life and residual strength of isotropic structures under multiaxial loading. The approach herein proposed does ...