Browsing by Author "San Andres, Luis"
Now showing items 21-40 of 114
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Bullock, Joshua Thomas (2019-03-12)The tested annular seals were smooth with a length-to-diameter ratio of 0.50, a diameter of 102.0064 mm (4.016 inches), and a nominal radial clearance of 0.2032 mm (0.008 inches). The tests were conducted for angular shaft ...
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Wu, Zhenhua (2012-07-16)In this dissertation, we proposed solutions on novel sensor deployment and diagnoser design to efficiently detect stochastic faults in PLC based automated systems First, a fuzzy quantitative graph based sensor deployment ...
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Jung, Wonbae (2017-12-08)Despite their many advantages, bump-type foil bearings (BFBs) have issues of dryfriction during sliding contact at rotor start/stop cycles. To prevent premature wear of both shaft and the BFB, the proper selection and ...
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Gaines, Jennifer Elizabeth (2014-12-03)Measured and predicted static and dynamic load characteristics are provided for a three-pad, rocker-pivot, tilting-pad journal bearing in the load-between-pad orientation. The bearing has the following characteristics: 3 ...
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Kerr, Thomas Chandler (2020-07-28)Thrust collars (TCs) are bearing elements used in geared machinery that transmit axial loads from one shaft to another. TCs are primarily used in integrally geared compressors (IGCs), but have applications in gearboxes, ...
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Hwang, Seongil (2016-12-15)The contribution analysis of various noise sources in the automobile interior noise is important for a well-designed vehicle with a low interior noise level. The proposed modified Cholesky Decomposition (CD) is able to ...
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Mahecha Mojica, Lady Paola (2011-10-21)Squeeze film dampers (SFDs) provide viscous damping to attenuate excessive vibrations and enhance system stability in turbomachinery. SFDs are of special importance in aircraft engines which use rolling element support ...
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Experimental Performance of an Open Ends Squeeze Film Damper and a Sealed Ends Squeeze Film Damper Jeung, Sung Hwa (2017-04-07)High performance turbomachinery often experiences severe dynamic loads that produce large amplitude rotor motions. Well-engineered squeeze film dampers (SFDs) provide adequate damping to ameliorate rotor vibrations and to ...
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Zhu, Xuehua (Texas A&M University, 2004-11-15)Gas bearings enable successful applications in high speed oil-free microturbomachinery. This thesis presents analysis and experiments of the dynamic performance of a rotor supported on Rayleigh step gas bearings. Comprehensive ...
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Shrestha, Hari Krishna (2018-03-02)Wet-gas compression has become an important technology to focus on, requiring a concentrated effort to predict the behavior of compressors when exposed to wet gas conditions. The compressor’s stability is highly influenced ...
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Kluitenberg, Matthew P (2015-04-29)Test results that examine the influence of jacking-oil ports on a tilting pad journal (TPJ) bearing are presented. The static and dynamic characteristics before and after adding jacking-oil ports are compared. The test ...
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Koo, Bonjin (2019-11-22)Squeeze film dampers (SFDs) in high-performance turbomachinery reduce rotor motion amplitudes as it traverses a critical speed or when the system has a dynamic instability, thus ensuring system reliability. To improve the ...
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Cable, Travis Alexander (2020-03-16)Modern micro-turbomachines (MTM) often employ light weight rotors operating at speeds in excess of 50 krpm. These turbomachines require radial and thrust bearings capable of handling high speeds, while also often operating ...
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Penrod, Luke Edward (Texas A&M University, 2004-09-30)This work details an investigation into the production of porous shape memory alloys (SMAs) via hot isostatic press (HIP) from prealloyed powders. HIPing is one of three main methods for producing porous SMAs, the other ...
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Kumar, Abhinav (2009-05-15)Computational investigations were carried out on an advanced serpentine jet engine inlet duct to understand the development and propagation of secondary flow structures. Computational analysis which went in tandem with ...
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Miller, Adam Cole (Texas A&M University, 2005-02-17)An experimental investigation was undertaken to determine the ability of Synthetic Jet Actuators to control the aerodynamic properties of a wing. The Synthetic Jet Actuator (SJA) was placed at two separate positions on ...
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San Andres, Luis; Lubell, Daniel (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
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Toram, Kiran Kumar (Texas A&M University, 2005-11-01)Tumble mills are hollow cylindrical shells of large diameter carrying grinding media (a combination of rock/iron ore/chemical flakes and metal balls/rods), which, upon rotation of the mill, will be ground into fine powder. ...
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Ryu, Keun (2009-05-15)Micro-turbomachinery (MTM) implements gas bearings in compact units of enhanced mechanical reliability. Gas bearings, however, have little damping and are prone to wear during frequent rotor start-up and shut down conditions. ...
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Delgado-Marquez, Adolfo (Texas A&M University, 2006-04-12)Squeeze film dampers (SFDs) with low levels of external pressurization and poor end sealing are prone to air entrapment, thus reducing the damping capability. Furthermore, existing predictive models are too restrictive. ...