Journal of Quality in Maintenance Engineering: Volume 9 Issue 2

Condition monitoring of steam turbines by performance analysis

Ray Beebe

Many power generation steam turbine generators today are required in service well beyond their intended lifetimes. Dismantling for inspection is expensive, and owners need to…

Development of a two‐wire thermal flow sensor for industrial applications

A. Al‐Salaymeh, M. Alhusein, F. Durst

Thermal flow sensors with a wide dynamic range are at present not available in spite of the large demand which exists for such sensors in practical fluid flow measurements. In…

Feature extraction and classification of gear faults using principal component analysis

Weihua Li, Tielin Shi, Guanglan Liao, Shuzi Yang

Feature extraction is a key issue to machine condition monitoring and fault diagnosis. The features must contain the necessary discriminative information for the fault classifier…

Experiments on the extraction of blade vibration signature from the shaft torsional vibration signals

B.O. Al‐Bedoor, L. Ghouti, S.A. Adewusi, Y. Al‐Nassar, M. Abdlsamad

This paper presents experiment results that examine the validity of extracting blade vibration signature from the shaft torsional vibration signals. A special test rig was…

Detecting and measuring flaws using electric potential techniques

Neçar Merah

The electric potential techniques are of two types: the direct current potential drop method (DCPD) and the alternating current potential drop method (ACPD). While the latter can…

Crack localization in non‐rotating shafts coupled to elastic foundation using sensitivity analysis techniques

Ahmad Al‐Qaisia, Giuseppe Catania, Umberto Meneghetti

The problem of damage and crack detection in structural components has acquired an important role in recent years. Since the presence of cracks in a structure may alter its…

A linear thermo‐visco‐elastic creep model for the contact of nominal flat surfaces based on fractal geometry: Kelvin‐Voigt medium

Osama M. Abuzeid

The objective of this paper is to construct a continuous model for the thermo‐visco‐elastic contact of a nominal flat, non‐smooth, punch and a smooth surface of a rigid…