Mechanical Engineering Commons^™

Biodiesel Production From Waste Cooking Oil Using Hydrodinamic Cavitation, Muhammad Dani Supardan, Satriana Satriana, Mahlinda Mahlinda

Makara Journal of Technology

The aim of this research was to study biodiesel production from low cost feedstock of waste cooking oil (WCO) using hydrodynamic cavitation apparatus. A two-step processes esterification process and transesterification process using hydrodynamic cavitation for the production of biodiesel from WCO is presented. The first step is acid-catalyzed esterification process for reducing free fatty acid (FFA) content of WCO and followed by base-catalyzed transesterification process for converting WCO to biodiesel as the second step. The result of esterification process with methanol to oil molar ratio of 5 and temperature of 60 oC showed that the initial acid value of WCO …

Knowledge Dictionary For Information Extraction On The Arabic Text Data, Wahyu Syaifullah Jauharis Saputra, Agus Zainal Arifin, Anny Yuniarti

Makara Journal of Technology

Information extraction is an early stage of a process of textual data analysis. Information extraction is required to get information from textual data that can be used for process analysis, such as classification and categorization. A textual data is strongly influenced by the language. Arabic is gaining a significant attention in many studies because Arabic language is very different from others, and in contrast to other languages, tools and research on the Arabic language is still lacking. The information extracted using the knowledge dictionary is a concept of expression. A knowledge dictionary is usually constructed manually by an expert and …

Process Improvements For Establishing Cmmi Certification At Company Xyz, Megan Farrell

Industrial and Manufacturing Engineering

CMMI stands for Capability Maturity Model Integration and is an enterprise-wide Process-Improvement model that provides a set of best practices that addresses productivity, performance, costs, and stakeholder satisfaction. This improvement model is generally used in computer software companied and not only does it improve their processes, but many contracts will only be awarded with those companies who are CMMI certified, so it is very important for Company XYZ. This goal of this project was to help improve the CMMI efforts at Company XYZ in 4 of the 20 distinct processes areas to attain a CMMI Maturity Level of 3. Improvement …

Design And Manufacture Of Natural Composite Canoe, Derek Baptista

Industrial and Manufacturing Engineering

Abstract

This report looks into the application and feasibility of manufacturing natural composite canoes. The main fabrics that were analyzed are flax, hemp, and jute. These were then compared to carbon fiber and fiberglass to see the difference in mechanical properties. It was found that the natural fibers have lower mechanical properties but that this could be overcome by designing a balsa wood core with ribs running up the walls. After manufacturing a hemp canoe, many lesson were learned and areas of interest were further explored. With the use of different natural fibers, these canoes can greatly reduce the carbon …

Chsr Clothing: How To Start A Small Business Clothing Line To Be Run Efficiently With Minimum Capital And Maximum Profit, Kayvon Banisalam

Industrial and Manufacturing Engineering

Executive Summary

Many clothing brands have failed because they did not design marketable products with a suitable business plan. Often times, clothing brand owners do not use the capital they possess in efficient ways. They can get caught off guard with unexpected costs and are not running the business in the most resourceful and professional way.

The goal of this project is to create a clothing brand that portrays distinctive designs to go along with an effective business model. This includes implementing decision analysis at several points of the planning phase, along with quality and cost controls. Creating quality products …

Facilities Planning For An Aerospace Manufacturing Company, William Petrossi

Industrial and Manufacturing Engineering

Absolute Technologies Inc. (ATI) has been growing for years, and is running out of space at their current manufacturing facility in Yorba Linda, CA. ATI will be moving to a much larger facility this winter. They are looking for an efficient way to utilize this space. The machine positions were taken as fixed, seeing as a lean expert was brought in to give advice on placement. With the machines fixed, the scope was narrowed to other areas.

A systematic approach to facilities design is utilized. First, a goal needs to be defined. The goal is to reduce the time wasted …

Consolidation Of Company Abc, Estelle Sillari-Owen

Industrial and Manufacturing Engineering

This project aims to solve Company ABC’s issues in order to keep the company afloat and to keep the company profitable. This was done by reducing Company ABC’s organizational and inventory build-up issues. The project aims to reduce the company’s dependence on outside storage, with plans of consistent inventory reduction over the next year. An implementation plan was created to ensure the company keeps on track to increase profits and prevent against increasing inventory costs.

Cost Effectiveness Of Home Energy Retrofits In Pre-Code Vintage Homes In The United States, Florida Solar Energy Center, Philip W. Fairey

FSEC Energy Research Center®

This study investigates the cost effectiveness of a large number of potential home energy retrofit measures using pre-code home archetypes that can be considered typical in a range of climates throughout the United States.

Towards A Fluid Solid Interaction Model Of A Dynamic Lung, Justin C. Jacobs

Electronic Theses and Dissertations

Because the pulmonary system is a site for both environmental particulate contamination, as well as drug delivery into the body, numerous research groups have focused on precisely understanding its inner-workings. Past research has demonstrated the need to realistically model the lung walls in order to accurately capture the complex airflow profile throughout all of the branches. Since this is paramount to properly replicating particulate transport in the lung, computational fluid dynamics simulations on their own are inadequate, as they cannot account for lung wall dilation. Only by coupling the fluid and solid domains can natural lung behavior can be effectively …

Wolfpack Gear Inc. Composite Frame Firefighter Backpack, Gabriel Mountjoy, Blair Ridings, Carl Drummond Buchenroth

Mechanical Engineering

No abstract provided.

Droplet Spray Behavior Of An Atomization-Based Cutting Fluid (Acf) System For Machining Of Titanium Alloys, Chandra Nath, Shiv G. Kapoor, Anil K. Srivastava, Jon Iverson

Manufacturing & Industrial Engineering Faculty Publications

The aim of this research is to study droplet spray characteristics of an atomization-based cutting fluid (ACF) spray system including droplet entrainment angle and flow development regions with respect to three ACF spray parameters, viz., droplet and gas velocities, and spray distance. ACF spray experiments are performed by varying droplet and gas velocities. The flow development behavior is studied by modeling the droplets entrainment mechanism, and the density and distribution of the droplets across the jet flare. Machining experiments are also performed in order to understand the effect of the droplet spray behavior on the machining performances, viz., tool life/wear, …

Combined Heat And Power: Technology Review And Analysis For A Residential Building, Nadine Reinert

Masters Theses and Doctoral Dissertations

This thesis intends to show the current state of Combined Heat and Power Systems and highlights the different aspects of the technologies. A manufacturer directory was developed and the theoretical principals for planning and analysis of a CHP system are described. In the second part, a case study is analyzed for residential application in the USA. Three Micro-CHP systems are chosen: Otto engine, Stirling engine, and fuel cell. Also two locations, Chicago and Atlanta, are selected to represent the northern and southern region. The calculations are based on models in TRNSYS and BHKW Plan. The results show, that the fuel …

Silicon Wafer Temperature Distribution, Daniel Gonzalez, Nathan Jones, Dylan Justice

Mechanical Engineering

Applied Materials is a global company that designs equipment for use in the semiconductor manufacturing industry. The scope of this project covers process chambers used for depositing thin chemical films onto silicon wafers. These processes must take place in particularly specific environments– including extremely low pressures and high temperatures. One challenge engineers face when designing these processes is carefully controlling the thermal behavior of silicon wafers. Typically, behavior is predicted using time consuming and computationally expensive CFD simulations. We have been asked to address this issue with a simpler, faster model which will allow engineers to reduce the total number …

Hepa Filter Evaluation Furnace Control Unit, Matt Gainer, Marc Goupil, Andrew Woolrich

Mechanical Engineering

No abstract provided.

The Design And Testing Of A Solar Autoclave With Broad Spectrum Sterilization Capabilities, Sarah S. Trabia

Honors College Theses

Energy is difficult to come by in developing countries and this interferes with the ability of doctors to provide good healthcare to their patients. Without decent sterilization, patients can become infected and diseases can spread throughout hospitals. This study involves designing a solar autoclave for developing countries that is as efficient as electrical autoclaves. The design is intended to not require any electrical input and to be affordable to those who cannot afford advanced medical equipment. Once the solar autoclave is designed, it will be tested to determine if it can sterilize equipment against a variety of different bacteria, including …

Chemical Vapor-Deposited Carbon Nanofibers On Carbon Fabric For Supercapacitor Electrode Applications, Yang Gao, Gaind P. Pandey, James Turner, Charles R. Westgate, Bahgat Sammakia

Mechanical Engineering Faculty Scholarship

Entangled carbon nanofibers (CNFs) were synthesized on a flexible carbon fabric (CF) via water-assisted chemical vapor deposition at 800A degrees C at atmospheric pressure utilizing iron (Fe) nanoparticles as catalysts, ethylene (C2H4) as the precursor gas, and argon (Ar) and hydrogen (H-2) as the carrier gases. Scanning electron microscopy, transmission electron microscopy, and electron dispersive spectroscopy were employed to characterize the morphology and structure of the CNFs. It has been found that the catalyst (Fe) thickness affected the morphology of the CNFs on the CF, resulting in different capacitive behaviors of the CNF/CF electrodes. Two different Fe thicknesses (5 and …

Managing The Drivers Of Airflow And Water Vapor Transport In Existing Single-Family Homes (Revised), Florida Solar Energy Center, James Cummings

FSEC Energy Research Center®

Air and water vapor are transported into and within single-family homes as a result of pathways and driving forces. Without pathways, no air or water vapor transport could occur. Likewise, without driving forces, little or no air or water vapor transport will occur. Homes always have pathways and driving forces. This report focuses on managing the driving forces that move air and water vapor across the building envelope.

Development Of A Lightweight, Monolithic, Aspheric Mirror Utlizing Fdm Technology, Josiah Thomas

Von Braun Symposium Student Posters

No abstract provided.

Effects Of Non-Newtonian Couple Stresses On The Dynamic Characteristics Of Wide Rayleigh Step Slider Bearings, Jaw-Ren Lin, Li-Ming Chu, Wei-Liang Liaw

Journal of Marine Science and Technology–Taiwan

To provide more information in fluid-film lubricated bearings, the effects of non-Newtonian couple stresses on the dynamic characteristics of Rayleigh step slider bearings have been presented in this paper. According to the results, the effects of non-Newtonian couple stresses signify an improvement in the bearing characteristics. Comparing with the Newtonian-lubricant Rayleigh step bearing, the nonNewtonian couple stress effects provide an increase in the steady load-carrying capacity, the dynamic stiffness coefficient and the dynamic damping coefficient, as well as a reduction in the steady volume flow rate required. In order to guide the use of the present study, a numerical example …

Force Optimization And Flow Field Characterization From A Flapping Wing Mechanism, Nathaniel Stephen Naegle

Theses and Dissertations

Flapping flight shows promise for micro air vehicle design because flapping wings provide superior aerodynamic performance than that of fixed wings and rotors at low Reynolds numbers. In these flight regimes, unsteady effects become increasingly important. This thesis explores some of the unsteady effects that provide additional lift to flapping wings through an experiment-based optimization of the kinematics of a flapping wing mechanism in a water tunnel. The mechanism wings and flow environment were scaled to simulate the flight of the hawkmoth (Manduca sexta) at hovering or near-hovering speeds. The optimization was repeated using rigid and flexible wings …

Work In Progress: Outreach Assessment: Measuring Engagement, Lizabeth Schlemer, John Oliver, Katherine Chen, Sophia Rodriguez Mata, Eric Kim

Industrial and Manufacturing Engineering

The Learn By Doing Lab (LBDL) at Cal Poly, San Luis Obispo is an on-campus laboratory where 5th through 8th grade students are taught by undergraduates who may be planning a careers in teaching. The two populations - elementary students and undergraduates - are equally important in the process. Since 2008, the lab has seen over 4000 elementary and junior high students and over 100 undergrads have participated. In most outreach assessment the number of individuals participating is an important metric, but this last Spring we experimented with a more in depth measure of effectiveness. As in any learning experience …

Designing For Success: Developing Engineers Who Consider Universal Design Principles, Kimberly Edginton Bigelow

Mechanical and Aerospace Engineering Faculty Publications

Engineers must design for a diverse group of potential users of their products; however, engineering curricula rarely include an emphasis on universal design principles. This research article details the effectiveness of a design project implemented in a first-year engineering course in an effort to raise awareness of the need for engineers to be more inclusive when designing. Students were asked to apply universal design principles to redesign an engineering laboratory to make it more usable to all, including individuals with disabilities who use the room. A representative from the university’s disability services staff, as well as individuals with first-hand experience …

Warehouse Redesign, Cristine Carmel Dewar

Industrial and Manufacturing Engineering

A young, growing biomedical company is expanding its warehouse space to keep up with the increasing production. This project’s goals were to recommend a layout and improve a process that would minimize the distance traveled by the material handlers, increase the safety of the warehouse by implementing visual controls, implement ergonomics to reduce chance of injury, and save money for the company. To achieve this first I familiarized myself with their current processes and department and the space required for their current and future production levels. Next I created two alternative layouts, the first (Layout A) to minimize distance and …

Thermal And Mechanical Properties Of Nitrate Thermal Storage Salts In The Solid-Phase, Brian D. Iverson, Scott T. Broome, Alan M. Kruizenga, Joseph G. Cordaro

Faculty Publications

Implementation of molten salt compounds as the heat transfer fluid and energy storage medium provides specific benefits to energy collection and conversion. Nitrate salts have been identified as a strong candidate for energy transfer and storage and have been demonstrated for use in these applications over time. As nitrate salts have solidification temperatures above ambient, concern for recovery from salt freezing events has instigated efforts to understand and predict this behavior. Accurate information of salt property behavior in the solid-phase is necessary for understanding recovery from a freeze event as well as for phase change thermal energy storage applications. Thermal …

Atomistic Investigation Of Scratching-Induced Deformation Twinning In Nanocrystalline Cu, Junjie Zhang, Tao Sun, Yoganda Yan, Dong Shen, Xiaodong Li

Faculty Publications

Deformation twinning is an important deformation mode of nanocrystalline metals. In current study, we investigate the scratching-induced deformation twinning in nanocrystallineCu by means of molecular dynamics simulations. The tribological behavior, the deformation mechanisms, the formation mechanism of deformation twins, and the grain size dependence of the propensity of deformation twinning are elucidated. Simulation results demonstrate that deformation twinning plays an important role in the plastic deformation of nanocrystallineCu under nanoscratching, in addition to dislocation activity and grain boundary-associated mechanism. The nucleation of initial twinning partial dislocations originates from the dissociation of lattice partial dislocations that emit from grain boundary triple …

Powered Transtibial Prosthetic Device Control System Design, Implementation And Testing, Jinming Sun

Master's Theses (2009 -)

A powered lower limb prosthesis, which consists of a four bar mechanism, a torsional spring and a brushed DC motor, was previously designed and fabricated. To regulate the motor power input, a two level controller was proposed and built. The control algorithm includes a higher level finite state controller and lower level PID controllers. To implement the control system, a digital signal processor (DSP) control board and MATLAB Simulink were used to realize the higher level control and a DC motor controller was used to realize the lower level PID control. Sensors were selected to provide the required feedback. The …

Development Of A Supervisory Control Unit For A Series Plug-In Hybrid Electric Vehicle, Brian Neal Harries

Doctoral Dissertations and Master's Theses

A Series PHEV was chosen, as ERAU's entry into EcoCAR2 through a multidisciplinary architecture selection process. The series architecture was chosen for its mechanical feasibility, consumer acceptability and its performance on energy consumption simulations. The Series PHEV architecture was modeled using Matlab, Simulink, and dSPACE ASM tools, to create a plant model for controller development. A supervisory controller was developed to safely control the interactions between powertrain components. The supervisory control unit was tested using SIL and HIL methodologies. The supervisory controller was developed with an emphasis on fault detection and mitigation for safety critical systems. A power management control …

Finite Element Model Updating For Rotary Machinery, Nathalie Gotin

Master's Theses

The main approach of this thesis was to develop a mathematical model that represents a rotary machine. Experimental data was used to define a finite element model (FEM). In order to obtain the experimental data, the rotary machine had to be balanced. An impact hammer test made it possible to obtain frequency response functions (FRF). The frequency response functions were curvefitted in order to obtain the mode shapes and natural frequencies.

Mathematical models have been created with ABAQUS and Matlab. For the Matlab Model the assumption has been made that the rotor machine consists of a specific number of beam …

Introduction Of Planar Compliant Joints Designed For Combined Bending And Axial Loading Conditions In Lamina Emergent Mechanisms, Samuel E. Wilding, Larry L. Howell, Spencer P. Magleby

Faculty Publications

This work introduces three joints to allow motion in lamina emergent mechanisms (LEMs) that were designed to have minimal parasitic motion under tension, compression, and a combination of tension and compression loading. Closed-form models of the joints were developed and combined with optimization algorithms for maximum flexibility in bending and then modeled using finite element analysis (FEA). The FEA results were used to predict the stiffness of the joints in bending, tension, and compression. As a baseline, lamina emergent torsional (LET) joints were designed to match the bending stiffness of each of the joints, so that the tensile-compressive performance could …

Enhancing The Engineering Curriculum: Defining Discovery Learning At Marquette University, Jay R. Goldberg, Mark L. Nagurka

Biomedical Engineering Faculty Research and Publications

This paper summarizes the results of our investigation into the feasibility of increasing the level of discovery learning in the College of Engineering (COE) at Marquette University. We review the education literature, document examples of discovery learning currently practiced in the COE and other schools, and propose a Marquette COE-specific definition of discovery learn-ing. Based on our assessment of the benefits, costs, and tradeoffs associated with increasing the level of discovery learning, we pre-sent several recommendations and identify resources required for implementation. These recommendations may be helpful in enhancing engineering education at other schools.