Engineering Commons^™

Limits Of Economy And Fidelity For Programmable Assembly Of Size-Controlled Triply-Periodic Polyhedra, Carlos M. Duque, Douglas M. Hal, Botond Tyukodi, Michael F. Hagan, Christian D. Santangelo, Gregory M. Grason

Data and Datasets

We propose and investigate an extension of the Caspar-Klug symmetry principles for viral capsid assembly to the programmable assembly of size-controlled triply-periodic polyhedra, discrete variants of the Primitive, Diamond, and Gyroid cubic minimal surfaces. Inspired by a recent class of programmable DNA origami colloids, we demonstrate that the economy of design in these crystalline assemblies -- in terms of the growth of the number of distinct particle species required with the increased size-scale (e.g. periodicity) -- is comparable to viral shells. We further test the role of geometric specificity in these assemblies via dynamical assembly simulations, which show that conditions …

Beirut Arab University - Faculty Of Engineering - Newsletter Issue 0, Faculty Of Engineering, Beirut Arab University

Engineering Newsletters

No abstract provided.

Source Data For Xueyan Feng, Michael S. Dimitriyev & Edwin L. Thomas, "Soft, Malleable Double Diamond Twin", Xueyan Feng, Michael S. Dimitriyev, Edwin L. Thomas

Data and Datasets

Source data and code for Xueyan Feng, Michael S. Dimitriyev & Edwin L. Thomas, "Soft, malleable double diamond twin"

Supplementary Code For "Chain Trajectories, Domain Shapes And Terminal Boundaries In Block Copolymers", Benjamin R. Greenvall, Michael S. Dimitriyev, Gregory M. Grason

Data and Datasets

Supplementary code used for the publication "Chain trajectories, domain shapes and terminal boundaries in block copolymers" by Benjamin R. Greenvall, Michael S. Dimitriyev, and Gregory M. Grason. Includes code for extracting and analyzing polar order and chain trajectories from self-consistent field calculations of block copolymers.

Architecture Of Heptagonal Metallo-Macrocycles Via Embedding Metal Nodes Into Its Rigid Backbone, A.M.Shashika D. Wijerathna, He Zhao, Qiangqiang Dong, Qixia Bai, Zhiyuan Jiang, Jie Yuan, Jun Wang, Mingzhao Chen, Markus Zirnheld, Rockwell T. Li, Yuan Zhang, Yiming Li, Pingshan Wang

College of Sciences Posters

Metal-organic macrocycles have received increasing attention not only due to their versatile applications such as molecular recognition, compounds encapsulation, anti-bacteria and others, but also for their important role in the study of structure-property relationship at nano scale. However, most of the constructions utilize benzene ring as the backbone, which restricts the ligand arm angle in the range of 60, 120 and 180 degrees. Thus, the topologies of most metallo-macrocycles are limited as triangles and hexagons, and explorations of using other backbones with large angles and the construction of metallo-macrocycles with more than six edges are very rare.

In this study, …

Platinum-Iridium Alloys In Jewelry, Nathen C. Christa, Seth Walker, Dylan Hallman

ME 4133/6133 Mechanical Metallurgy

One of the most widely used metals on the periodic table is Platinum (Pt). The name is derived from the Spanish Platina, meaning “silver.” This malleable, ductile material is widely used in applications due to its unique chemical properties. A couple of these unique properties include a high melting point and good resistance to corrosion or chemical attack. Platinum materials have alloys that are indispensable in the chemical laboratory for electrodes. This allows for material applications in crucibles and dishes to withstand elevated temperatures. Platinum is used primarily in catalytic converters in vehicles converting emissions from the vehicle’s engine into …

High-Carbon Steel In Additive Manufacturing, Chidi N. Agusiegbe, Devin Morton, Emmanuel Moore

ME 4133/6133 Mechanical Metallurgy

High-carbon steel can be processed through numerous methods. The method that will be focused on primarily is processing high-carbon steel through means of additive manufacturing. Additive manufacturing is the industrial production name for 3D printing, a computer-controlled process that creates three-dimensional objects by depositing materials, usually in layers. AM methods like wire laser additive manufacturing (WLAM) and electron beam melting (EBM) are all common methods for fabricating high carbon steel. The perks associated with these methods are that they improve some drawbacks of the natural properties of high-carbon steel. This paper discusses the uses of these additive manufacturing methods along …

High Carbon Steel In Additive Manufacturing, Emmanuel Moore Ii, Devin Morton, Chid Agusiegbe

ME 4133/6133 Mechanical Metallurgy

The first known use of carbon steel dates back to 500 A.D. when a blacksmith mistakenly used iron ore as a primary material for smithing. This material, as the name suggests, is made up of both carbon and iron. This material, as one of the most abundant at the time, was used most frequently in European and Asian countries. “Carbon steel first appeared around the year 500 AD in Damascus steel swords as well as Japanese swords. They were prized for their sharp edges and sturdiness compared to other weapons of the era. The composition of these swords was very …

Integration Of Hadfield Steel Into Modern Body Armor, Jason T. Fridlund

ME 4133/6133 Mechanical Metallurgy

The increased lethality of recently fielded projectiles mandates a proportional escalation in armor performance. Recent advancements in ceramic technologies have allowed designers to incorporate harder but more brittle materials into hard armor designs to defeat yet more capable penetrating projectiles. Ceramics suffer from the feature of shattering, however, even when impacted by threats below their design parameters. While this shattering mechanism is used effectively to dissipate energy from high-energy rifle projectiles, it is wasted on low-energy projectiles, and can result in easily damaged lifesaving gear, both of which are undesirable in combat. In contrast, steel body armor has been used …

High Carbon Steel In Additive Manufacturing, Chidi Agusiegbe, Devin Morton, Emmanuel Moore

ME 4133/6133 Mechanical Metallurgy

Infographic demonstrating the composition, and use of high carbon steels as well as the process of the material in additive manufacturing.

Sae 8620 Pspp Map - Infographic, John F. Mitchener

ME 4133/6133 Mechanical Metallurgy

This infographic summarizes a Processing-Structure-Property-Performance (PSPP) Map for SAE 8620 alloy steel, with an emphasis on the gas carburization process. This PSPP map allows researchers and material scientists to better understand the processes that drive the microstructures, material properties, and ultimate performance parameters.

Impulse, Fall 2022, University Marketing And Communications, Jerome J. Lohr College Of Engineering

Impulse (Jerome J. Lohr College of Engineering Publication)

2 | Sanjeev Kumar Takes Helm as College’s 12th Dean
5 | College Develops Partnerships in India, Turkey
6 | Faculty News
8 | Aerofly — Profs, Alum Partner To Build Unique Drone
10 | Researchers Find Way to Extend Produce Shelf Life
12 | SDSU Claims National Title in Quarter-Scale Tractors
14 | Nation’s Top ASCE Chapter Housed at SDSU
16 | National Geo-Video Title Won By State Students
18 | Summer Brings Engineering Camps to Campus
20 | Haleigh Timmer — Money on the Court, In Classroom
22 | Daniel Burkhalter — Day in the Life of Student-Athlete …

Impulse, Spring 2022, University Marketing And Communications, Jerome J. Lohr College Of Engineering

Impulse (Jerome J. Lohr College of Engineering Publication)

2 | Ahmed Leads Construction and Operations Management
4 | Faculty News
8 | Kelley Steps Aside After 44 Years
12 | Boggs Retires From Mechanical Engineering
14 | Looking At Covid-19 Numbers
16 | Students Help College of Nursing
18 | Midwest Applied Materials Symposium Debuts
20 | Fourth Data Science Event Takes Place
24 | College Achievements
26 | Hard Work Pays Off
28 | Spotlight Shines on Students
30 | Mentoring Program Takes Off
32 | Robotics Club Busy With Activities
34 | The Numbers
36 | Brown, Sieve Honored
38 | Alumna Leads NASA Division
40 …

Mechanical Behavior Of Materials, Joshua P. Steimel

Pacific Open Texts

This text serves to cover in more detail solid mechanics concepts and specifically the material response to stress and strain. This text spans solid mechanics concepts from stress and strain at an atomistic length scale, to linear elasticity, anisotropy, linear viscoelasticity, plasticity, dislocation generation and interactions, and fracture.

Source Data For Self-Spinning Filaments For Autonomously Linked Microfibers, Dylan M. Barber, Todd S. Emrick, Gregory Grason, Alfred Crosby

Data and Datasets

Filamentous bundles are ubiquitous in Nature, achieving highly adaptive functions and structural integrity from assembly of diverse mesoscale supramolecular elements. Engineering routes to synthetic, topologically integrated analogs demands precisely coordinated control of multiple filaments’ shapes and positions, a major challenge when performed without complex machinery or labor-intensive processing. Here, we demonstrate a photocreasing design that encodes local curvature and twist into mesoscale polymer filaments, enabling their programmed transformation into target 3-dimensional geometries. Importantly, patterned photocreasing of filament arrays drives autonomous spinning to form linked filament bundles that are highly entangled and structurally robust. In individual filaments, photocreases unlock paths 16 …

The Process-Structure-Property-Performance Of Aisi 1020​, Jonathan Wellman, Tate James, Robbie Christman, Brian Broom

ME 4133/6133 Mechanical Metallurgy

AISI 1020 is widely used in many different industries due to its high strength, high ductility, high machinability, and good weldability. AISI 1020 has a number of applications. Low carbon steel can be used on a macroscale to build bridges, and low carbon steel can be used on smaller scales such as Lawnmower blades. Low carbon steel is the material of choice for lawn mower blades because of its ability to bend before it breaks. The ductile attribute of low carbon steel also has many other benefits.

Ti-6al-7nb Utilization In Surgical Implants, Michael O. Fleming

ME 4133/6133 Mechanical Metallurgy

This presentation discusses the processing, structure, properties, and performance of Ti-6Al-7Nb in relation to use as a surgical implant.

Development Of Pspp Map For Stainless Steel Alloys Used In A Marine Environment, Jarrett D. Hawkins

ME 4133/6133 Mechanical Metallurgy

A process-structure-properties-performance map will be created for these alloys focusing on the modification of the structure or composition and outlining the processes required and the affected properties. A thorough review of different chemical alloys, grain refining methods, and grain boundary compositions for several alloys and their corresponding property effects. Also plan to review material treatment processes and standard refining methods for stainless steels. The performance of these metals will be evaluated for property requirements in regards to strength, toughness, with an emphasis on corrosion resistance.

Tungsten: The Strongest Natural Metal On Earth, Haley E. Holland, Razan Khadka, Lee Marble, Kaleb Tutor

ME 4133/6133 Mechanical Metallurgy

The overall objective of this project was to construct a process-structure-property-performance (PSPP) map for a chosen metallic material. The material chosen by the group is tungsten (W). Tungsten is a rare, naturally occurring element and is usually found in the form of ores. It is known predominantly for its ability to withstand extreme temperatures, as well as its high tensile strength. The PSPP map displays many specifications of tungsten in each of the four categories and further details regarding each specific linkage, or subcategory, within the map are written throughout the research paper.

Along with the four specific categories outlined …

Analysis Of Titanium Alloy Ti-6al-4v, Hunter C. Smith, Gordin Smith

ME 4133/6133 Mechanical Metallurgy

Titanium alloy Ti-6Al-4V was chosen for examination, more specifically, the Properties and Performance of the alloy. The students will share the responsibility of examining the attributes of the material. The team members participate evenly in performing research, producing calculations, and constructing the final report. Contained herein is the information gathered through research conducted thus far.

The performance of the material will be related to the processing methods of the material. This relationship forms the basis of cost analysis. The students will examine the atomic characteristics and crystalline structure to determine the effects of the alloyed materials on properties such as …

An Analysis Of The Effects Of Process, Structure, And Properties On The Performance Of The Ti6al4v Alloy, Brad Jay Sampson, Loubna Ifqir

ME 4133/6133 Mechanical Metallurgy

Ti6Al4V (pronounced Ti-64), is a titanium alloy used in a variety of engineering applications including the aerospace, automotive, and biomedical industries. Ti6Al4V is made up of a combined ɑ-β microstructure, which provides it with many valuable properties such as high strength, low weight, high melting point, corrosion resistance, and biocompatibility. [1] For years, casting and forging have been the traditional processes used for the manufacturing of Ti6Al4V components, but recent interest in the additive manufacturing of Ti6Al4V through the Electron Beam Melting (EBM), Selective Laser Melting (SLM), and Directed Energy Deposition (DED) methods has been gained. The goal of this …

Al 6061 Alloy, Will Mckelvey, Evan Robertson, Justin Yates

ME 4133/6133 Mechanical Metallurgy

We want to portray the Al 6061 manufacturing and machining processes and how these affect the mechanical properties of the material. We also want to portray the strength and weaknesses and the reasons why it is used in certain applications.

Duplex Stainless Steel 2205 In The Pulp And Paper Industry, Charlie S. Wilcher, Trevor Davus

ME 4133/6133 Mechanical Metallurgy

Duplex stainless steel’s durability, formability, and resistance to corrosion make it the primary steel option of the pulp and paper industry. The harsh environments found in certain aspects of this industry, such as in bleach plants, digesters, liquor vessels, and any piping where corrosive liquids may be passed, require the previously mentioned properties that duplex stainless steel 2205 offer. The structure and properties of duplex stainless steel, as well as the processes it undergoes, allow for it to withstand these environments. Research into the structure and properties of duplex stainless steel and the processes it undergoes will indicate how duplex …

Ar400 Wear Plates, Jase Tatum, Bryson Miller, John Howell, Aaron Alexander

ME 4133/6133 Mechanical Metallurgy

Wear resistance is an invaluable performance metric for most metallic components found in mechanical systems. Our research focused on AR400, a steel alloy known for its wear resistance capabilities, in an effort to determine what factors might be attributed to its performance in wear applications. After establishing the processing techniques and resulting material structures that give AR400 such an edge in extreme wear conditions, our goal is to determine indicators of wear resistance that can be used to distinguish excellent wear resistant alloys from average or subpar performers against wear.

Investigating Cobalt Chrome Alloy For Use In Biomedical Applications, Morgan Calhoun, Caitlin Cade

ME 4133/6133 Mechanical Metallurgy

Cobalt Chrome alloys, in particular cast Co-Cr ASTM-F75, are often used as the material for medical implants due to a combination of material properties: high strength, stiffness, temperature endurance, and wear / corrosion resistance. We aim to demonstrate and discuss what characteristics make it such a desirable material in the production of metallic biomedical implants

Titanium Ti-6al-4v, James Aaras Ross Brundege

ME 4133/6133 Mechanical Metallurgy

Titanium alloys, such as Ti-6A1-4V, used as biomaterials possess great characteristics compared to other alloys such as stainless steel alloys. Characteristics such as biocompatibility, enhanced corrosion, strain, and fatigue resistance provide amazing benefits from these alloys. Providing an understanding of Ti used in biomedical applications and production can provide insight into its benefits and limitations as well as the areas of potential improvement for future study.

3xx Aluminum Alloys For Ice Implementation, Kyle A. Taylor, Eric Cleckner, Jeffery Garrett

ME 4133/6133 Mechanical Metallurgy

The material to be explored for the purpose of this project relates to the Aluminum alloys used in the majority of modern engine “heads” and a number of engine “blocks”. The Aluminum used for these engine applications vary slightly across different manufacturers in their processing, structure and ultimate properties, despite their nearly identical performance applications. Part of the interest in this particular subject is the slight variations across manufacturing that result in different performance. Regardless of idiosyncrasies, these Al alloys are expected to perform under varying temperatures, with the ability to elastically deform and return to their original shape. They …

Gas Measurement Device, Megan C. Frost, Weilue He

Michigan Tech Patents

A device including a first chamber, a second chamber, and a membrane permeable to neutral gases but impermeable to water that is positioned between the first chamber and the second chamber. The membrane includes a first layer including PVDF and PDMS, and the PVDF has a plurality of pores at least partially filled with at least some of the PDMS.

Load-Bearing Entanglements In Polymer Glasses, Cynthia Bukowski, Tianren Zhang, Robert A. Riggleman, Alfred J. Crosby

Data and Datasets

Data for "Load-bearing entanglements in polymer glasses" Cynthia Bukowski, Tianren Zhang, Robert A. Riggleman, Alfred J. Crosby. 2021.

Experimental and simulation data describing the mechanical response of glassy polymer blends in a thin film state. Blends are made of long and short chain polymers. The load-bearing entanglement network is quantified.

Studies In Additive Manufacturing Techniques For Pulsed Fusion Experiments, Michael Canary

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.