Digital Commons Network^™

Railroad Condition Monitoring Using Distributed Acoustic Sensing And Deep Learning Techniques, Md Arifur Rahman

Electronic Theses and Dissertations

Proper condition monitoring has been a major issue among railroad administrations since it might cause catastrophic dilemmas that lead to fatalities or damage to the infrastructure. Although various aspects of train safety have been conducted by scholars, in-motion monitoring detection of defect occurrence, cause, and severity is still a big concern. Hence extensive studies are still required to enhance the accuracy of inspection methods for railroad condition monitoring (CM). Distributed acoustic sensing (DAS) has been recognized as a promising method because of its sensing capabilities over long distances and for massive structures. As DAS produces large datasets, algorithms for precise …

Comparative Analysis Of Fullstack Development Technologies: Frontend, Backend And Database, Qozeem Odeniran

Electronic Theses and Dissertations

Accessing websites with various devices has brought changes in the field of application development. The choice of cross-platform, reusable frameworks is very crucial in this era. This thesis embarks in the evaluation of front-end, back-end, and database technologies to address the status quo. Study-a explores front-end development, focusing on angular.js and react.js. Using these frameworks, comparative web applications were created and evaluated locally. Important insights were obtained through benchmark tests, lighthouse metrics, and architectural evaluations. React.js proves to be a performance leader in spite of the possible influence of a virtual machine, opening the door for additional research. Study b …

Design And Fabrication Of A Force-Displacement Control Mechanism For Bone-Surgical Tool Testing, Kenneth Nwagu

Electronic Theses and Dissertations

This project focuses on the design and fabrication of an experimental setup for orthopedic-tool testing, tailored for a surgical instrumentation company. The multifaceted project encompasses a literature review, conceptual design, prototyping, and rigorous testing, resulting in a versatile control system capable of assessing various orthopedic tools, including bone drills, saws, burrs, and power handpieces.

Orthopedic surgical procedures (which include cutting and/or drilling into bone) often need to be performed on bones for faster recovery. The drilling and cutting process can cause an increase in temperature at the cutting site which can cause bone necrosis. The tools also need to be …

In-Situ Process Monitoring For Metal Additive Manufacturing (Am) Through Acoustic Technique, Md Shahjahan Hossain

Electronic Theses and Dissertations

Additive Manufacturing (AM) is currently a widely used technology in different industries such as aerospace, medical, and consumer products. Previously it was mainly used for prototyping of the products, but now it is equally valuable for commercial product manufacturing. More profound understanding is still needed to track and identify defects during the AM process to ensure higher quality products with less material waste. Nondestructive testing becomes an essential form of testing for AM parts, where AE is one of the most used methods for in situ process monitoring. The Acoustic Emission (AE) approach has gained a reputation in nondestructive testing …

Quality Assurance Of Lightweight Structures Via Phase-Based Motion Estimation, Ikenna E. Ifekaonwu

Electronic Theses and Dissertations

In recent years, lightweight structures have become mature and adopted in various applications. The importance of quality assurance cannot be overemphasized hence extensive research has been conducted to assess the quality of lightweight structures. This study investigates a novel process that exploits motion magnification to investigate the damage characteristics of lightweight mission-critical parts. The goal is to assure the structural integrity of 3D printed structures and composite structures by determining the inherent defects present in the part by exploiting their vibration characteristics. The minuscule vibration of the structure was recorded with the aid of a high-speed digital camera, and the …

The Development Of A Holistic Quality Score Using In-Situ Monitoring Of Laser Powder Bed Fusion, Ryan Daigneault

Electronic Theses and Dissertations

Additive manufacturing processes allow for a great degree of flexibility in terms of part production. The process is autonomous once the part has started printing in that the operator generally does not need to intervene until the part is finished. One issue that this introduces, however, is an inability to determine part quality during the printing process. Once a part has started printing, the operator must either wait until the part is finished or regularly check on the part during the print to determine the part quality. Using data gathered from multiple sensors, a quality score can be used to …

Integrated Intermodal Network Design With Nonlinear Inter-Hub Movement Costs, Mohammad Ghane-Ezabadi, Hector A. Vergara

International Material Handling Research Colloquium

Poster 11

Dynamic Batching For Order Picking In Warehouses, Jelmer Pier Van Der Gaast, Bolor Jargalsaikhan, Kees Jan Roodbergen

International Material Handling Research Colloquium

Poster 26

Shuttle-Based Storage And Retrieval Systems With Robotic Order-Picking Shuttle Carrier, Tone Lerher

International Material Handling Research Colloquium

Poster 12

On The Unique Features And Benefits Of On-Demand Distribution Models, Jennifer Pazour, Kaan Unnu

International Material Handling Research Colloquium

Poster 6

Digital Design Of Intralogistics Systems: Flexible And Agile Solutions To Short-Cyclic Fluctuations, Christoph Pott, Anike Murrenhoff, Moritz Wernecke, Philipp-Akira Burger

International Material Handling Research Colloquium

Poster 20

Urban Parcel Logistics Hub And Network Design: The Impact Of Modularity And Hyperconnectivity, Benoit Montreuil, Shannon Buckley, Louis Faugere, Reem Khir, Shahab Derhami

International Material Handling Research Colloquium

Poster 27

Transportation Service Provider Collaboration: Benefits And Insights, Steven Roesch, Kimberly Ellis

International Material Handling Research Colloquium

Poster 30

Minimizing The Variance Of Fulfillment Cycle Time In A Central Fill Pharmacy: Why And How, Mohamed El Tonbari, Leon Mcginnis

International Material Handling Research Colloquium

Poster 31

A Measurement Tool For Circular Economy Practices: A Case Study In Pallet Supply Chains, Maria Grazia Gnoni, Andres L. Carrano, Fabiana Tornese, Jennifer Pazour, Brian K. Thorn

International Material Handling Research Colloquium

Poster 7

Batching And Sequencing In Bucket Brigade Systems With Heterogeneous Items, Yossi Bukchin, Eran Hanany, Eugene Khmelnitsky

International Material Handling Research Colloquium

Poster 9

A Performance Calculator For Shuttle-Based Storage And Retrieval System Design, Banu Yetkin Ekren, Anil Akpumar, Tone Lerher

International Material Handling Research Colloquium

Poster 28

A Framework For Modeling Material Handling With Decentralized Control, Kevin Gue, Kai Furmans

International Material Handling Research Colloquium

Poster 23

An Integrated Network Modeling Framework For Analysis Of Multi-Line Order Pick Systems, Debjit Roy, Vishal Bansal

International Material Handling Research Colloquium

Poster 16

Contribution Of Physical Internet Containers To Mitigate The Risk Of Cargo Theft, Yanyan Yang, Eric Ballot, Miguel Gaston Cedillo-Campos

International Material Handling Research Colloquium

Poster 24

Panel Session #2: Ecom Fulfillment And The Physical Internet: Some Motivation And A Persistent Challenge, Benoit Montreuil, Russell D. Meller, Eric Ballot

International Material Handling Research Colloquium

Panel Session 2

Panelists: Benoit Montreuil, Russell Meller, and Eric Ballot

Moderator: Kimberly Ellis

A Space-Syntax Analysis Of The Relationship Between Function And Form In Facility Layout, Alejandro Teran-Somohano, Alice E. Smith

International Material Handling Research Colloquium

Poster 1

Progress In Autonomous Picking As Demonstrated By The Amazon Robotics Challenge, Dominik Colling, Jonathan Dziedzitz, Kai Furmans, Patric Hopfgarten, Kai Markert

International Material Handling Research Colloquium

Poster 17

A Design Methodology To Optimize Supply Chain Network Performance, Dheeraporn Nippaya, J. David Porter

International Material Handling Research Colloquium

Poster 5

Optimization Of A Fast-Pick Area In Cosmetics Distribution Center, Mario C. Velez-Gallego, Alice E. Smith

International Material Handling Research Colloquium

Poster 18

Service Flow Networks For Functional Design Of Distribution Centers, Michael Schmidt, Detlef A. Spee, Michael Ten Hompel

International Material Handling Research Colloquium

Poster 15

Scalable Heuristic For Locating Distribution Centers On Real Road Networks, Saeed Ghanbartehrani, J. David Porter

International Material Handling Research Colloquium

Poster 13

Synthetic Order Generator For Picking Data, Mohammadnaser Ansari, Jeffrey S. Smith, Behnam Rasoolian

International Material Handling Research Colloquium

Poster 4

Pull-Driven Order Fulfillment In Distribution Centers, Dima Nazzal, Shankar Shanmugasundaram, Sung Kim, Russell D. Meller

International Material Handling Research Colloquium

Poster 22

Keynote: The Small World Of Material Handling Rearch, Parag J. Siddique, Kevin Gue, Md Salahuddin Ayuby

International Material Handling Research Colloquium

Keynote Address