Industrial Engineering Commons^™

Implications Of Additive Manufacturing On Complexity Management Within Supply Chains In A Production Environment., Andre Kieviet

Electronic Theses and Dissertations

This dissertation focuses on developing a generic framework for using additive manufacturing as an appropriate production method to address the management of complexity in supply chains. While several drivers such as changing customer demand patterns and intensifying global competition increase product complexity, the available number of product variants and related processes within the supply chain itself increase costs and dilute scale effects. Several concepts and tools like mass customization, modularization, and product platforms have been developed in the past decades, but most of them focus on the product structure. Currently, there is no comprehensive tool set developed in the field …

A Heuristic Algorithm For Determining The Part Set In A Powder-Bed Additive Manufacturing Machine., Sonja Dieder

Electronic Theses and Dissertations

The goal of this research is to develop a procedure for the placement of a priority part into a planned build in a powder-bed additive manufacturing machine. Toward that goal, a heuristic procedure was developed that seeks to maximize the revenue in a scheduled build, subject to due-date constraints; i.e., all parts with the closest due date will not only be included in the build, but will be placed near the bottom of the build. Likewise, any part in the scheduled build that does not have an immediate due date is a candidate for removal in order to accommodate a …

Simulation Model For Optimization Of A Landside Harbor Logistic Chain Of Container Terminals., Klaus Striegel

Electronic Theses and Dissertations

The world wide transportation of all kind of goods with containers is a fast growing business. The challenge is to transport in the shortest time to the lowest cost. The vessels therefore become bigger and bigger. The biggest vessel with 16000 TEU is since December 2012 in service. But the next generation with 18000-22000 TEU is already being built. This raises questions in acceleration of loading and unloading process, the handling in the yards of the harbors and the transportation of the containers to Hinterland. The most common way is still to transport the container from the yard by truck, …

Investigating Present And Future Interactions Between Radio Frequency Identification, Additive Manufacturing And Supply Chain Management, Michael Nobuhiro Ochi

Master's Theses

A screening experiment was paired with research observing the past, present and futures of additive manufacturing (a.k.a. rapid prototyping, 3D printing), radio frequency identification, and supply chain management. The experiment tested different properties of objects created with a desktop fused deposition modelling printer to observe if any single factors or interactions affected the read range of embedded passive UHF RFID inlay. The combination of material and infill percentage had a statistically significant effect on read range, however the analysis is weak since the data could not justify the normality assumption of ANOVA. Furthermore, the size of the effect was small …

Compressed Air Leak Study, Colin Knue, Suresh Kumar Baskaran

Research and Creative Activities Poster Day

Today compressed air plays very important role as part of expense. A huge chunk of expenditure can be saved as such. Effort in terms of monetary and energy will be a waste if even fraction of the compressed air is lost because of leak in the system without making the best use of it. There are leak detection and repair systems that can be adapted to overcome such wastage of compressed air. In this project, a procedure using ultrasonic leak detector to identify, locate and repair leaks is adapted. The summary of controlling already existing leaks and preventing more new …

Systems Simulation Analysis Of A Hospital Rapid Response System, Shoruk Mansour

Research and Creative Activities Poster Day

The poster presents a systems simulation analysis of a hospital rapid response system. Analysis of interventions and future work related to the project are included.

Ergonomics Study Led Lighting Assembly, Marylin Glass-Angeles, Nathan Christensen, Josef Imesh, Lorena Peña, Natalia Matos

Research and Creative Activities Poster Day

The current assembly process of the LED Lighting product line at Landscape Forms (LF) combines high force exertion, motion repetition and an uncomfortable posture. Therefore, Industrial Engineers overseeing the manufacturing of these products raised a concern for their workers health and were interested in identifying injury risks related to the current methodology as well as opportunities for the reduction of such risks.

The Green Manufacturing Industrial Consortium’S (Gmic) Approach To Zero-Waste-To-Landfill (Zwtl), Nathan J. Christensen, Marylin Glass-Angeles

Research and Creative Activities Poster Day

Introduction: As organizations continually seek to reduce various forms of waste, some may seek to reduce their landfill impact and improve recycling and material disposal practices. Many organizations interested in reducing their landfill waste have embarked on a zero-waste-to-landfill (ZWTL) journey. This journey involves thoroughly exploring the landfill waste of an organization, reverse tracking the waste to its source, and establishing new practices and procedures for eliminating the source of waste from the landfill stream. The purpose of this poster is to describe the methodology used by the Green Manufacturing Initiative to assist companies on their ZWTL journey.

Veneer Defect Data Collection & Analysis, Marylin Glass-Angeles, Josef Imesh, Nathan Christensen, Nathan Bowen, Zachary Miller

Research and Creative Activities Poster Day

Objectives: This project is Phase I of a two part study with the purpose of aiding Steelcase in reducing defects occurring in the sanding step of the wood manufacturing process. During Phase I, the team collected data and used the results to identify the greatest material and profit losses. The continuing goal of the study will be to address these issues to the greatest extent possible.

Modeling And Analysis Of Patient Care Assistants’ Workflow, Ewing Tiong

Research and Creative Activities Poster Day

Background

While there is a considerable amount of research on medium-to-long decision support models for healthcare systems, little emphasis is placed on research that focuses on short-term operational decisions made by healthcare providers. Patient care assistants (PCAs) provide both indirect and direct patient care under the supervision of a registered nurse (RN). Main responsibilities include:

• Gathering patient data
• Assisting patients with activities of daily living (ADLs)

Detecting Air Traffic Controller Interventions In Recorded Air Transportation System Data, Yul Kwon

Open Access Theses

In this study, I propose a systematic method of detecting aircraft deviation due to air traffic controller (ATC) intervention. The aircraft deviations associated with ATC interventions are detected using a heuristic algorithm developed from analyzing the actual positions of an aircraft to its filed flight plan when the aircraft trajectories were identified as having an encounter in a loss-of-separation incident. An actual (closed-loop) flight trajectory of the Cleveland Air Route Traffic Control Center (ZOB ARTCC) was collected from the FlightAware database. This was compared with the corresponding planned (open-loop) trajectory dataset generated by the Microsoft© Flight Simulator X (FSX). I …

Modeling And Optimization Of Care Transitions, Yuming Mo

Open Access Theses

More than 145 million people live with at least one chronic condition, and almost half of them have multiple conditions. As a result, many managed care and integrated delivery systems have taken a great interest in alleviating the many deficiencies in managing the current care system that spans across various care delivery settings. In addition, many Americans have to rely on some social health insurance plan to cover her care expenses. As a result, these patients often may not been sufficiently cured but have to be transitioned to less expensive but less medically intensive facilities, due to the increasing pressure …

Nanohub Database Analysis: Using Anomaly Detection Method And Principal Component Analysis, Mengyang Qi

Open Access Theses

This thesis analyzes usage data from nanoHUB.org, which is a web-based infrastructure for e-collaboration among nanotechnology simulation community. Previous analysis of nanoHUB database showed he nanoHUB usage data follows an unknown, heavy-tailed distributions. This thesis extends the analysis and develops an automatic anomaly detection method based on piece-wise linear approximation. The anomaly here refers to collective user behaviors different from others. The result shows that the method can accurately detect the anomalies in the unknown, heavily detailed distribution. This thesis also applies anomaly detection method and principal component analysis to other databases in nanoHUB and successfully reveals differences between different …

A Comparative Analysis Of An Original And A Post-Hoc Application Of Lean Six Sigma Methodology, Jin Qiu

Open Access Theses

Current society develops faster and faster every day with customers' demands increasing rapidly. Decreasing time for product development and enhancing customer satisfaction are becoming more significant. In the business world, there is no industry that could exist without an efficient supply chain. In the fierce competitive environment of today, the supply chain must address potential problems and risks that may exist and assure continuous improvement.

One common supply chain management practice in many industries is to apply lean methodology to the supply chain model in order to maximize the customers' value and eliminate waste. By eliminating waste, the process can …

Modeling Preventive Maintenance In Complex Systems, Jessica Rivas

Open Access Theses

This thesis presents an explicit consideration of the impacts of modeling decisions on the resulting maintenance planning. Incomplete data is common in maintenance planning, but is rarely considered explicitly. Robust optimization aims to minimize the impact of uncertainty--here, in contrast, I show how its impact can be explicitly quantified. Doing so allows decision makers to determine whether it is worthwhile to invest in reducing uncertainty about the system or the effect of maintenance. The thesis consists of two parts. Part I uses a case study to show how incomplete data arises and how the data can be used to derive …

A Lean Logistics Assessment Tool For Smes In The Manufacturing Sector, Diana Lorena Sanchez Ramirez

Open Access Theses

This study developed an assessment tool to rate the maturity of the current and desired states of lean logistics operations in small and medium enterprises. The tool consists of 48 best practices classified into 8 critical factors: Inventory, Transportation, Administration, Information Systems, Warehouse, Forecasting, Packaging and Supplier Network. Each of the best practices and critical factors were identified throughout a thorough literature review and comparative analysis between authors to define commonalities among them. Using gap analysis; this tool results in a SWOT matrix providing a roadmap for lean implementation. The resulting model was evaluated by subject matter experts in different …

Exploratory Study In Container Loading Embraer 190 Aircraft, Ryan H. Auyeung

Open Access Theses

Since the dawn of aviation, cargo loading on aircraft has remained virtually constant. A person and a baggage cart together have been the primary method of loading baggage on to aircraft, and this practice has virtually remained unchanged, especially for narrow body aircraft. This study explores the question of whether a loading device, designed for Embraer 190 aircraft, can increase economic efficiency by reducing aircraft turnaround times, increasing aircraft utilization and reducing work hours. In the course of designing a theoretical loading device for an Embraer 190, various literature ranging from elaborate articulating conveyor belts, to the use of LD3-45W …

The Effect Of Job Performance Aids On Quality Assurance, Erik David Fosshage

Open Access Theses

Job performance aids (JPAs) have been studied for many decades in a variety of disciplines and for many different types of tasks, yet this is the first known research experiment using JPAs in a quality assurance (QA) context. The objective of this thesis was to assess whether a JPA has an effect on the performance of a QA observer performing the concurrent dual verification technique for a basic assembly task. The JPA used in this study was a simple checklist, and the design borrows heavily from prior research on task analysis and other human factors principles. The assembly task and …

Position/Speed Sensorless Control For Permanent-Magnet Synchronous Machines, Yue Zhao

Department of Electrical and Computer Engineering: Dissertations, Theses, and Student Research

Permanent-magnet synchronous machines (PMSMs) are widely used in industrial applications owing to their distinctive advantages, such as high efficiency, high power density, and wide constant power region. To achieve high-performance field oriented control, accurate rotor position information, which is usually measured by rotary encoders or resolvers, is indispensable. However, the use of these sensors increases the cost, size, weight, and wiring complexity and reduces the mechanical robustness and the reliability of the overall PMSM drive systems. The goal of the research for this dissertation was to develop a rotor position/speed sensorless control system with performance comparable to the sensor-based control …

Systems Theory Based Framework For Competency Models, Joseph M. Bradley

Engineering Management & Systems Engineering Theses & Dissertations

The purpose of this research was to develop and apply a systems theoretic framework for design, analysis and transformation of competency models using an inductive research design. This research examines the origins and development of competency models from a systems theoretic perspective. Competency models have been largely developed by a comparative method first proposed by McClelland, or the use of Delphi method survey techniques. The assumption that a population containing an exemplar and fully successful members would enable population of a holistic competency model has reported numerous failures. Similarly, reporting on the use of Delphi methods has focused on attempting …