Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Vibration patterns"”.
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Vibration Analysis of a Wind Turbine Multi-Stage Planetary Gearbox Incorporating a Flexible Body Component
… solver. The model is created to show the vibration patterns of a healthy gearbox with rigid bodies, with a flexible body, and with a defect applied on a particular gear in the planetary gear systems that is representative of the N90 wind turbine. The flexible body incorporation allows for …
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Fluid-structural interaction effects on vibrations of pipework.
… the natural frequency, the damping ratio and the vibration patterns. To appraise the effect of the fluid on the natural frequencies, fluid-pipe interactions are formulated with extensions from single phase flows to two phase annular flows. The equivalence of the annular flow to the single phase is …
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Investigation of the Acoustics of Plucked String Tones Based on the Analysis of Their Time-Varying Spectra
… investigates two aspects of the time-varying vibration patterns of plucked string tones of classical guitar, Chinese pipa and Chinese ch'in. First, the assumption that horizontal and vertical frequencies and decay rates may be different is used as a basis for classifying the partial amplitude …
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Vibration-Based Health Monitoring of Multiple-Stage Gear Train and Differential Planetary Transmission Involving Teeth Damage and Backlash Nonlinearity
<p>The objective of this thesis is to develop vibration-based fault detection strategies for on-line condition monitoring of gear transmission systems. The study divides the thesis into three sections. First of all, the local stresses created by a root fatigue crack on a pinion spur gear are …
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Modal Analysis of Axisymmetric Structures using Zernike Polynomials and Machine Learning
… mobility has amplified the need for advanced vibration analysis to control noise in both electric cars and aircraft. In vehicles, tire-induced vibrations have become a significant contributor to cabin noise, making an understanding of tire mode shapes crucial for effective vibration …
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DEVELOPMENT OF SPACE-INVARIANT SIGNATURE ALGORITHM (SISA) - AN INNOVATIVE APPROACH FOR PROCESSING THE MEDICAL IMAGES FOR THE DETECTION AND LOCALIZATION OF EARLY ABNORMALITIES IN BIOLOGICAL TISSUES
… in the system parameters that induced the vibration patterns. Furthermore, the experimental results using the SISA approach were also obtained on ultrasound images to find abnormalities in animal tissues. In each of these cases of ultrasound imaging, the SISA signature patterns were able to …