Engineering Commons^™

Community-Scale Water Treatment Systems In The Dominican Republic, Jonathan Racey, Annabelle Papai, Elise Fischer, Becca Johnson

Engagement & Service-Learning Summit

Engagement and Service-Learning Summit: Reciprocal and Sustainable Partnerships

Collaborative Product–Service Approach To Aviation Maintenance, Repair, And Overhaul. Part I: Quantitative Model, Cassio Dias Goncalves, Michael Kokkolaras

Journal of Aviation Technology and Engineering

This two-part paper proposes a new collaborative approach to airframe maintenance, repair, and overhaul (MRO). A quantitative model is introduced in Part I to represent the business relationships between original equipment manufacturers (OEMs) and MRO enterprises. In Part II, the presented model is used to assess potential financial benefits obtained by each of these stakeholders as a result of the collaboration.

The quantitative model is built to capture the main dependencies between an independent MRO enterprise operating in South America and its interactions with three major airframe OEMs. Interviews were conducted with MRO and OEM professionals to identify the most …

Implementing Ngss Engineering Disciplinary Core Ideas In Middle School Science Classrooms: Results From The Field, Jessica Gale, Jayma Koval, Mike Ryan, Marion Usselman, Stefanie Wind

Journal of Pre-College Engineering Education Research (J-PEER)

With the inclusion of engineering disciplinary core ideas (DCIs), the Next Generation Science Standards (NGSS) position engineering as a new priority in K–12 science classrooms. This paper reports findings from the implementation of SLIDER, a problem-based learning 8th grade physical science curriculum that integrates engineering and physical science core ideas. As a culminating engineering design challenge, the SLIDER curriculum asks students to apply their understanding of energy, motion, and forces to design an automatic braking system for a robotic truck. The paper describes the curriculum and synthesizes findings from an array of data sources including student design interviews, written design …

Smart Disease Prevention App: Informing The Public In Their Own Geographic Location, Apoorva Sulakhe, Shafali Rana, Zoe Disori, William Nogay, Kyle Plummer, Meredith Shannon, Morgan Young, Alyssa Zielinski, Vincent G. Duffy

Purdue Journal of Service-Learning and International Engagement

Apoorva Sulakhe and Shefali Rana are graduate students in the School of Industrial Engineering at Purdue. They have both been teaching assistants under their coauthor, Dr. Vincent Duffy, while supervising multiple projects. Coauthors Zoe Disori, William Nogay, Kyle Plummer, Meredith Shannon, Morgan Young, and Alyssa Zielinski are listed in alphabetical order. They were all seniors in School of Industrial Engineering at the time of this project in 2017. The purpose of their study, described in this article, was to develop an application to provide users with accurate information about diseases spreading in their geographic locations.

Engineering Success On The Field: A Reflection On The Epics Ironman Pediatric Prosthetic Project, Glynn Gallaway

Purdue Journal of Service-Learning and International Engagement

Glynn Gallaway is a student in the Purdue Mechanical Engineering Class of 2020 with interests in the health care, assistive technology, and medical device industries. Glynn is from Dallas, Texas, and was inspired to pursue this career path through her interactions with youth with special needs. She joined the EPICS Ironman team in the fall of 2016 during her first year at Purdue as a part of the learning community. In this article, she discusses her experiences on the Ironman team creating a pediatric prosthetic for a young local athlete. The goal of the Ironman team is to create a …

Habitat For Humanity: A Student-Led Service Trip To Thailand, Amber Reiff

Purdue Journal of Service-Learning and International Engagement

Amber Reiff started volunteering with Habitat for Humanity in high school and joined the Purdue Student Chapter as a freshman in 2014. During her sophomore year, she became more involved and held the position of Vice President of Development. While serving in this role, she planned on-campus advocacy events and recruited volunteers for Saturday site builds. In 2017, she traveled to Lampang, Thailand, over spring break with a group of like-minded students striving to make a difference. In this article, she shares her experiences on this trip and explores the impact of her participation. Beyond this trip, she has continued …

Transcribing Braille Code: Learning Equations Across Platforms, Deegan Atha, Courtney Balogh

Purdue Journal of Service-Learning and International Engagement

Deegan Atha, a graduating senior in electrical engineering and a future engineer, is interested in human-centered design and developing technology that helps students engage and be successful in STEM.

Courtney Balogh, a junior in mechanical engineering, is interested in human-centered design and the importance it plays in product development. Deegan and Courtney are members of the Purdue EPICS project, Learning Equations Across Platforms (LEAP). They partnered with the Indiana School for the Blind and Visually Impaired (ISBVI) to develop a braille transcription device and web application that converts braille to print in real time.

Search And Review Of The Literature On Engineering Design Challenges In Secondary School Settings, Matthew Lammi, Cameron Denson, Paul Asunda

Journal of Pre-College Engineering Education Research (J-PEER)

Engineering design activities offer the promise of enhanced learning and teaching in pre-college science, technology, engineering, and mathematics (STEM) settings. The wide variation and lack of coherence in research and practice concerning pre-college engineering design challenges necessitates an investigation of the literature. The overarching research question guiding this search and review of literature was, ‘‘How are engineering design challenges conceptualized in pre-college environments?’’ A search and review coupled with iterative thematic analysis was employed to understand and conceptualize the current body of literature on pre-college engineering design challenges. It is anticipated that this review will provide a general picture of …

Stem Roles: How Students’ Ontological Perspectives Facilitate Stem Identities, Dina Verdín, Allison Godwin, Monique Ross

Journal of Pre-College Engineering Education Research (J-PEER)

Educational researchers have explored the importance of performance, recognition, and interest in establishing and maintaining a STEM identity. Research has also demonstrated that the ways students describe themselves and how they participate in STEM communities can provide insight into their role identity salience; however, there has been little work to explore the ontological beliefs of students about STEM people and how this influences their ability to see themselves as possessing a STEM identity. This research explores the ontological beliefs of high school students, with specific attention to the ways in which they describe what constitutes a math person, science person, …

Enhancing Your Intelligence Agency Information Resource Iq: Pt. 4: National Geospatial Intelligence Agency (Ngia), National Intelligence University (Niu), And National Reconnaissance Office (Nro), Bert Chapman

Libraries Faculty and Staff Presentations

Webinar presentation on publicly accessible information resources produced by the U.S. National Geospatial Intelligence Agency (NGIA), National Intelligence University (NIU), and National Reconnaissance Office. Places significant emphasis on missions of these agencies, their historical accomplishments, coverage of their educational activity, and information on the technologies they have used and are currently using to fulfill their institutional objectives.

Hypothesis Paper: Mechanism For Primary Blast Induced Traumatic Brain Injury With Minimal Head Motion, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Working Papers

Transit of the human skull by blast waves produces diffuse brain injury. The exact mechanisms are unknown. This paper describes plausible mechanisms in which steep intracranial pressure gradients, demonstrated in prior computational models of blast-skull interaction, produce subsequent deformation and motion of the whole brain within the skull, without obvious movement of the head. Equations of motion are derived to describe the acceleration, velocity, and relative position of both the skull and the brain in response to known extracranial and intracranial pressures both during and several hundred milliseconds after blast wave passage. A finite element model is solved to visualize …

Synthesis And Characterization Of Polymer-Silica Composite Hydrogel Particles And Influence Of Hydrogel Composition On Cement Paste Microstructure, Matthew J. Krafcik, B Bose, Kendra Erk

School of Materials Engineering Faculty Publications

The objective of this research is to define the fundamental structure-property relationships of water-swollen polymer hydrogel particles that are employed as internal curing agents in cementitious mixtures, in addition to reporting a novel synthesis procedure for combining pozzolanic materials with hydrogel particles. Solution polymerization was performed to incorporate amorphous nanosilica particles within acrylic-based polymer hydrogel particles of varying chemical compositions (i.e., monomer ratio of acrylic acid (AA) to acrylamide (AM)). Experiments were designed to measure the absorption capacity and kinetics of hydrogel particles immersed in pure water and cementitious pore solution, as well as determine the impact of particles on …

One Root, Many Trees: Reviving Collections Practices, Kevin Farley, Emily Davis Winthrop, Ibironke Lawal, Patricia Sobczak

Charleston Library Conference

Collections are undergoing intense change and pressure from technology, budgetary uncertainties, and emerging perspectives on future approaches. Our case study—drawn from our experiences as collections librarians—examines these complex issues facing academic collections, large or small, across the profession. Through the development of “collections of distinction” within the local collection, collaborations and scholarly partnerships with colleagues and faculty, and advocacy for the importance of dedicated oversight to ensure that collections investments fulfill the academic mission, we explore possible solutions to the complicated issues defining contemporary collections practices.

Tesselations And Percolations In Topologically Interlocked Stereotomic Material Systems, Andrew Williams, Thomas Siegmund

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Emergent Wave Phenomena In Coupled Elastic Bars: From Extreme Attenuation To Realization Of Elastodynamic Switches, Qianli Chen, Ahmed Elbanna

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Fiber Reorientation Behavior Of Bioinspired Bouligand Architectures With Functional Graded Fiber Orientation, Di Wang, Alireza Zaheri, Benjamin Russell, Pablo Zavattieri

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Topologically Interlocked Material Systems: From A Material Design Concept To Properties, Thomas Siegmund

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Extremal Material And Structure Design By Topology Optimization, Ole Sigmund, Jeroen Groen

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Energy Harvesting In Phase Transforming Materials, Aman Thakkar, Nilesh Mankame, Pablo Zavattieri, Andres F.

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Design And Performance Of Periodic Trusses, Frank Zok, Matthew Begley, Ryan Latture

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Lattice Structures And Strength Optimization, Vince Vernacchio, Thomas Siegmund

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Intermittent Interfaces: Bioinspired Strategies Towards Material Resilience, H.Daniel Wagner, Israel Greenfeld, Wenyong Zhang, Xiaomeng Sui

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Flexoelectricity-Based Electromechanical Metamaterials, A. Mocci, D. Codony, A. Abdollahi, Irene Arias

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Extending Origami: Crease Pre-Stressing For Functional Adaptation, Andres Arrieta, Jakob Faber, Katherine Riley, André Studart

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Bcc Metamaterials Composed Of Tapered Beams: Stiffness And Energy Absorption, Thomas Tancogne-Dejean, Dirk Mohr

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Exploiting Auxetics To Design Composite Materials With Enhanced Mechanical Performance, Tiantian Li, Lifeng Wang

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Exploring Material Property Space Using Bioinspiration And Architecture, Francois Barthelat

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Architecture And Internal Material Length Scale: Fatigue Crack Growth Across Weak Interfaces, Josh Pribe, Thomas Siegmund

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Mechanical Instability-Driven Architecturing Of Atomically-Thin Materials, Sungwoo Nam

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

A Numerical Simulation Capability For Electroelastic Wave Propagation In Dielectric Elastomer Composites: Application To Tunable Soft Phononic Crystals, Michael Jandron, David Henann

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.