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Browsing Research Articles (Mechanical and Aeronautical Engineering) by UP Author

Browsing Research Articles (Mechanical and Aeronautical Engineering) by UP Author "Oberholster, Abraham Johannes (Abrie)"

Now showing items 1-5 of 5

Eulerian laser Doppler vibrometry : online blade damage identification on a multi-blade test rotor

Oberholster, Abraham Johannes (Abrie); Heyns, P.S. (Philippus Stephanus) (Elsevier, 2011-01)

Laser Doppler vibrometry enables the telemetry-free measurement of online turbomachinery blade vibration. Specifically, the Eulerian or fixed reference frame implementation of laser vibrometry provides a practical solution ...
Improved blade tip timing measurements during transient conditions using a state space model

Diamond, D.H. (David); Heyns, P.S. (Philippus Stephanus); Oberholster, Abraham Johannes (Abrie) (Elsevier, 2019-05)

Rotor blade condition monitoring is considered an important aspect of turbomachine management, especially with the current trend of systems operating at higher speeds, loads and temperatures. Blade Tip Timing is a non-intrusive ...
Online shaft encoder geometry compensation for arbitrary shaft speed profiles using Bayesian regression

Diamond, D.H. (David); Heyns, P.S. (Philippus Stephanus); Oberholster, Abraham Johannes (Abrie) (Elsevier, 2016-12)

The measurement of instantaneous angular speed is being increasingly investigated for its use in a wide range of condition monitoring and prognostic applications. Central to many measurement techniques are incremental ...
Rotating blade vibration analysis using photogrammetry and tracking laser Doppler vibrometry

Gwashavanhu, Benjamin; Oberholster, Abraham Johannes (Abrie); Heyns, P.S. (Philippus Stephanus) (Elsevier, 2016-08)

Online structural dynamic analysis of turbomachinery blades is conventionally done using contact techniques such as strain gauges for the collection of data. To transfer the captured data from the sensor to the data logging ...
Shape principal component analysis as a targetless photogrammetric technique for condition monitoring of rotating machines

Gwashavanhu, Benjamin; Heyns, P.S. (Philippus Stephanus); Oberholster, Abraham Johannes (Abrie) (Elsevier, 2019-01)

Rotating machines are widely used in engineering for applications which include power generation and machine propulsion systems. These machines have to be accurately monitored and maintained to avoid system failures. ...

Now showing items 1-5 of 5

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Browsing Research Articles (Mechanical and Aeronautical Engineering) by UP Author "Oberholster, Abraham Johannes (Abrie)"

Browsing Research Articles (Mechanical and Aeronautical Engineering) by UP Author "Oberholster, Abraham Johannes (Abrie)"

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