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Articles 1 - 6 of 6
Full-Text Articles in Engineering
Multisensor Processing Algorithms For Underwater Dipole Localization And Tracking Using Mems Artificial Lateral-Line Sensors, Saunvit Pandya, Yingchen Yang, Douglas L. Jones, Jonathan Engel, Chang Liu
Multisensor Processing Algorithms For Underwater Dipole Localization And Tracking Using Mems Artificial Lateral-Line Sensors, Saunvit Pandya, Yingchen Yang, Douglas L. Jones, Jonathan Engel, Chang Liu
Mechanical Engineering Faculty Publications and Presentations
An engineered artificial lateral-line system has been recently developed, consisting of a 16-element array of finely spaced MEMS hot-wire flow sensors. This represents a new class of underwater flow sensing instruments and necessitates the development of rapid, efficient, and robust signal processing algorithms. In this paper, we report on the development and implementation of a set of algorithms that assist in the localization and tracking of vibrational dipole sources underwater. Using these algorithms, accurate tracking of the trajectory of a moving dipole source has been demonstrated successfully.
Design And Manufacturing Of Functionally Graded Materials With Polymer Chain And Nano-Reinforcement Orientation For Compressive Applications, Sanjay Varma Kalidindi
Design And Manufacturing Of Functionally Graded Materials With Polymer Chain And Nano-Reinforcement Orientation For Compressive Applications, Sanjay Varma Kalidindi
Theses and Dissertations - UTB/UTPA
Functionally Graded Materials for compressive applications were designed and manufactured by tailoring the properties of Pure Polyethylene (PE) and Vapor Grown Carbon Nanofiber (VGCNF) Reinforced PE Composites. Properties of NRPC have been extensively studied. Properties are dependent on parameters such as the reinforcement/matrix interaction; reinforcement volume fraction, orientation, dispersion, and packing, and the final matrix microstructure. However, there is limited literature on their properties under compression loading. Compression strength studies for high density PE reinforced with VGCNF for different fiber volume fraction (0%, 5%, 10% and 15%) were carried out. The role of interface and alignment was studied. Samples were …
Electrorheology Of Fullerene Suspensions, Maricela Lizcano
Electrorheology Of Fullerene Suspensions, Maricela Lizcano
Theses and Dissertations - UTB/UTPA
Electrorheological fluids are suspension materials whose rheological behavior changes with an applied voltage. In particular, the material changes from a fluid to a solid behavior with an applied voltage and reverses to its original state when the voltage is removed. This function classifies ER fluids as smart materials. ER fluids may be developed and used as mechanical devices with no mechanical parts such as pumps, actuators, and dampers. Until recently, research was concentrated with micro-particle suspension fluids. This research project investigates the electrorheology of carbon nano-particle suspension.
Comparison Of Sliding Mode And State-Feedback Control Applied To A Partially Treated Actively Constrained Layer Damped (Acld) Beam, Jose J. Rodriguez
Comparison Of Sliding Mode And State-Feedback Control Applied To A Partially Treated Actively Constrained Layer Damped (Acld) Beam, Jose J. Rodriguez
Theses and Dissertations - UTB/UTPA
In this research, a sliding mode control (SMC) was utilized in the control of a partially treated, actively constrained layer damped (ACLD), Timoshenko beam model. The resulting vibration control was compared to the vibration control achieved by a state-feedback linear quadratic regulator (LQR) for several loading conditions. An observer was designed and model order reduction (MOR) was performed to achieve a simplified, efficient, and more controllable finite element system model. As a result of model simplification, modeling errors in the form of unstructured uncertainties were introduced into the system. It was determined that the SMC and LQR achieved similar vibration …
A Stochastic Production Cost Model For Remanufacturing Systems, Gaurang S. Patel
A Stochastic Production Cost Model For Remanufacturing Systems, Gaurang S. Patel
Theses and Dissertations - UTB/UTPA
Growing environmental concern throughout this decade coupled with enforced legislation, customer expectations and economic incentives have forced increasing number of manufacturers to take back their products from end user. Managing this reverse flow of products is called reverse logistics. The stochastic nature of returned products complicates the production planning for remanufacturing systems in reverse logistics. In this thesis a stochastic production cost model, considering various costs associated under different situations for remanufacturing systems of returned products is developed. A search algorithm method is recommended to determine optimal production run size, production rate and space for remanufacturing systems in reverse logistics. …
The Effect Of The Shear-Thickening Transition Of Model Colloidal Spheres On The Sign Of N1 And On The Radial Pressure Profile In Torsional Shear Flows, M. Lee, Mataz Alcoutlabi, J. J. Magda, C. Dibble, M. J. Solomon, X. Shi, G. B. Mckenna
The Effect Of The Shear-Thickening Transition Of Model Colloidal Spheres On The Sign Of N1 And On The Radial Pressure Profile In Torsional Shear Flows, M. Lee, Mataz Alcoutlabi, J. J. Magda, C. Dibble, M. J. Solomon, X. Shi, G. B. Mckenna
Mechanical Engineering Faculty Publications and Presentations
A novel rheometer plate was used to measure radial pressure profiles during cone-and-plate and parallel-plate shearing flows of a concentrated colloidal dispersion of polymethyl methacryalate spheres suspended in dioctyl phthalate. There is a long history of using suspensions of this type as a model rheological system. The measured pressure profile can be used to calculate N1 and N2, and also provides a check on the flow field in the rheometer. At shear rates just below onset of shear thickening, our measurements show that N1 is positive as predicted by Stokesian dynamics simulations of model Brownian hard spheres, but we are …