Abstract With the popularization of friction stir welding (FSW), 5083-H321 and 6061-T6 aluminum alloy materials are widely used during FSW process. In this study, fatigue life with two materials, i.e., alloy, studied. Fatigue tests were carried out on base metal these as well butt joints overlapping samples. The principle equivalent structural stress method is to analyze test data materials. re...

The apparent activation energy of sintering for 8-mol%-Y2O3-doped ZrO2 during shrinkage-rate-controlled flash was determined using a master curve. SCF found to decrease from approximately 700 430 kJ/mol with density. in high-density region is similar value lattice diffusion, 460 kJ/mol. relative density range over which the occurred smaller than thermal and further moved lower temperature range...

v. dannon showed that spherical curves in e4 can be given by frenet-like equations, and he thengave an integral characterization for spherical curves in e4 . in this paper, lorentzian spherical timelike andspacelike curves in the space time 41 r are shown to be given by frenet-like equations of timelike andspacelike curves in the euclidean space e3 and the minkowski 3-space 31 r . thus, finding...

We introduce the Generalized Discrimination Value (GDV) that measures, in a non-invasive manner, how well different data classes separate each given layer of an artificial neural network. It turns out that, at end training period, GDV L attains highly reproducible value, irrespective initialization network’s connection weights. In case multi-layer perceptrons trained with error backpropagation,...