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Enhancement of physics-of-failure prognostic models with system level features
To truly optimize the deployment of DoD assets, there exists a fundamental need for predictive tools that can reliably estimate the current and reasonably predict the future capacity of complexExpand
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Removal of order domain content in rotating equipment signals by double resampling
Abstract Fixed frequency content (i.e. component or structural resonances) in spectra obtained from rotating equipment can be masked by the strong sources at harmonics (order) of the shaft runningExpand
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Compensation for encoder geometry and shaft speed variation in time interval torsional vibration measurement
Abstract Digital time interval techniques for the measurement of torsional vibrations in rotating shafts have been used in a variety of applications. The techniques use high-speed timers to detectExpand
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DYNAMIC SIMULATION OF MECHANICAL FAULT TRANSITION
Over the past few decades many vibration and signal analysis techniques have been investigated, developed, and used to provide operational response information about mechanical power transmissionExpand
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Blade and Shaft Crack Detection Using Torsional Vibration Measurements Part 2: Resampling to Improve Effective Dynamic Range
The primary goal of the development project was to demonstrate the feasibility of detecting changes in blade bending natural frequencies (such as those associated with a blade crack) on a turbineExpand
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Computed tomography morphometric analysis of the central clival depression and petroclival angle for application of the presigmoid approach in the pediatric population
Aims: Lateral transtemporal approaches are useful for addressing lesions located ventral to the brainstem, especially when the pathologic diagnosis of the tumor dictates that a gross or near totalExpand
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Vibration isolation of a medical facility
An MRI (magnetic resonance imaging) facility was constructed only 50 ft from a busy railroad line. This case history shows how careful design, analysis, testing and construction can provide aExpand
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Blade and Shaft Crack Detection Using Torsional Vibration Measurements Part 1: Feasibility Studies
The primary goal of the development project was to demonstrate the feasibility of detecting changes in blade natural frequencies (such as those associated with a blade crack) on a turbine usingExpand
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Application of Torsional Vibration Measurement to Shaft Crack Monitoring in Power Plants
Abstract : The primary goal of the this project was to demonstrate the feasibility of detecting changes in shaft natural frequencies (such as those associated with a shaft crack) on rotatingExpand
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Torsion response of a cracked stainless steel shaft
Pump shafts used for power generation are susceptible to fatigue cracking while often in near-continuous operation. Technology based on torsional vibration is under development for condition-basedExpand
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