This paper presents information-theoretic analysis of time-series data to detect slowly evolving anomalies (i.e., deviations from a nominal operating condition) in dynamical systems. A measure for anomaly detection is formulated based on the concepts derived from information theory and statistical thermodynamics. The underlying algorithm is first tested on a low-dimensional complex dynamical sy...

Entropy as a measure of uncertainty was used to represent the results of the wavelet technique in electrochemical noise analysis. The experimental signals were obtained by recording the electrochemical potential and current noise of 7075 aluminum alloy in 3.5% NaCl solution. The electrochemical potential and current noise were decomposed into 16 levels using Daubechies wavelets. Wavelet output ...

Hydrogen embrittlement affected by three types of plating (low-P and high-P electroless Ni-P electrolytic Zn-platin) was investigated means slow-strain-rate three-point bending test on aluminum alloys (2017-T3, 6061-T6 7075-T651). generated the zinc absorbed alloy substrates, trap sites in substrates for hydrogen differed between plating. able to be evaluated tests plated alloys. Zinc did not c...

In this paper, the tribocorrosion behavior and synergistic effect of 7075-T6 aluminum alloy under different applied loads (100, 150, 200 N) sliding velocities rpm) were studied in a 3.5 wt.% NaCl solution. Tribocorrosion experiments conducted tribobocorrosion system with pin-on-disc testing. The results show that interaction between load velocity significantly affects mechanical electrochemical...