Fault instability on a finite and planar fault related to early phase of nucleation

Fault Diagnosis and Fault-Tolerant SVPWM Technique of Six-phase Converter under Open-Switch Fault

In this paper, a new open-switch fault diagnosis method is proposed for the six-phase AC-DC converter based on the difference between the phase current and the corresponding reference using an adaptive threshold. The open-switch faults are detected without any additional equipment and complicated calculations, since the proposed fault detection method is integrated with the controller required ...

Stacking-fault nucleation on Ir(111).

Variable temperature scanning tunneling microscopy experiments reveal that in Ir(111) homoepitaxy islands nucleate and grow both in the regular fcc stacking and in the faulted hcp stacking. Analysis of this effect in dependence on deposition temperature leads to an atomistic model of stacking-fault formation: The large, metastable stacking-fault islands grow by sufficiently fast addition of ada...

Fault Detection Method on a Compressor Rotor Using the Phase Variation of the Vibration Signal

The aim of this work is the application of the phase variation in vibration signal for fault detection on rotating machines. The vibration signal from the machine is modulated in amplitude and phase around a carrier frequency. The modulating signal in phase is determined after the Hilbert transform and is used, with the Fast Fourier Transform, to extract the harmonics spectrum in phase. This me...

On Early Phase Fault Estimation in Object-Oriented Development

Chidamber and Kemerer's metrics are well-known object-oriented design complexity metrics. In the evaluations, their metrics were applied to source code because some of them depend on the information that can not be obtained until the end of design phase. This paper proposes a new method to estimate the fault-proneness of class by using C&K metrics at early design phase. In the proposed method, ...

Findings on Efficiency and Early Fault Detection