Now showing items 11-20 of 891
Fatigue crack growth of Al 7475 T761 under constant and variable amplitude loading
(Pergamon Press Ltd, 1997-01-01)
Experimental programs in constant and variable amplitude loading were performed to obtain a x N curves and to study retardation in fatigue crack growth due to overloads. The main aim of this research program was to analyse ...
Obtaining the Maximum Loading Point of Electric Power Systems using the Decoupled Methods of Newton
(Ieee-inst Electrical Electronics Engineers Inc, 2016-01-01)
This paper presents a proposed Newton decoupled method modification (simultaneous resolution algorithm and alternate) with the addition of an equation line passing through of a point in the plane determined by the variables: ...
A statistical analysis of loss factor to determine the energy losses
Given that the total amount of losses in a distribution system is known, with a reliable methodology for the technical loss calculation, the non-technical losses can be obtained by subtraction. A usual method of calculation ...
An Improved Parameterization Technique for the Continuation Power Flow
Continuation methods have been long used in P-V curve tracing due to their efficiency in the resolution of ill-conditioned cases, with close to singular Jacobian matrices, such as the maximum loading point of power systems. ...
Characteristics of the double-torsion test to determine the R-curve of ceramic materials
Double-torsion tests were carried out on a commercial ceramic floor tile to verify whether this test is suitable for determining the R-curve of ceramics. The instantaneous crack length was obtained by means of compliance ...
Non linear fracture mechanics of polymers: Load Separation and Normalization methods
(Pergamon-Elsevier Science Ltd, 2012-01)
Fracture toughness of ductile polymers can be measured by the incremental crack growth resistance curve, where J-Integral value is plotted as a function of crack extension. The determination of the resistance curve, J-R, ...