Digital Commons Network^™

Linear And Nonlinear Thermo-Electro-Magneto Elasticity, Robert Lowe

Society of Engineering Science 51st Annual Technical Meeting Archive

Multiferroic magneto-electric polymer composites are an emerging class of smart materials that exhibit strong magneto-electric coupling, making them promising candidates for a wide variety of multifunctional applications. To enable the characterization, design, and optimization of novel smart composites like these, the associated mathematical models must have the breadth to account for complex coupled physics, e.g., three-dimensional thermo-electro-magneto-elastic (TEME) behavior, finite deformations (i.e., geometric nonlinearities), and nonlinear constitutive response (i.e., material nonlinearities). In this discussion, we present a Lagrangian (reference configuration) approach to modeling TEME behavior in the finite-deformation regime. We illustrate the development of the fundamental laws of large-deformation TEME, …

Constitutive Modeling And Characterization Of Nanocomposite Hydrogel For Blast Resistant Materials, Muhammed Imam, Trisha Sain

Society of Engineering Science 51st Annual Technical Meeting Archive

In the recent trend of advanced material research, manufacturing novel materials with improved properties and multifunctionality is an important focus across disciplines. As a material, hydrogel finds several applications in the area of biomedical engineering. They are used widely in tissue regeneration, scaffolding, drug delivery, etc. However, using hydrogels for mechanical load bearing application is still limited because of its poor stiffness and low toughness. Like other polymers hydrogels have viscoelasticity which indicates it has potentials to be used as an energy absorbing material. Researchers have already been working on producing tough hydrogels by manufacturing double network hydrogels and nanocomposite …

Strain Localization In Unsaturated Soils With Large Deformation, Xiaoyu Song, Ronaldo Borja

Society of Engineering Science 51st Annual Technical Meeting Archive

Strain localization is a ubiquitous feature of granular materials undergoing nonhomogeneous deformation. In -unsaturated porous media, how the localized deformation band is formed depends crucially on the degree of -saturation, because fluid in the pores of a solid imposes a volume constraint on the deformation of the solid. When fluid flow is involved, the inception of the localized deformation band also depends on the heterogeneity of a material, which is quantified in terms of the spatial variation of density, the degree of saturation, and matric suction. We present a mathematical framework for coupled solid-deformation/fluid-diffusion in unsaturated porous media that takes …

Augmented Finite Element Method For Progressive Damage In Complex Heterogeneous Materials, Qingda Yang, Mehdi Naeri

Society of Engineering Science 51st Annual Technical Meeting Archive

High-fidelity simulations of damage evolution are approaching realization for a number of material systems, thanks to significant advances in modeling methods and experimental imaging. Nevertheless, significant challenges remain, many of which relate to the difficulty of developing practicable formulations for dealing with materials containing complex material heterogeneity and reinforcement architectures. Heterogeneity poses special problems with the accurate prediction of local stress and strain fields, which can vary strongly with local material features; and with predicting cracks and localized damage bands, which can appear during damage evolution not only on the material boundaries, but also on other surfaces that cannot be …

Fracture Simulation Of Co-Continuous Composite Materials Under Static Loading, Fraaz Tahir, Yongming Liu, Lifeng Wang

Society of Engineering Science 51st Annual Technical Meeting Archive

Co-continuous composites consist of two materials with very different properties that can be fine-tuned to give high strength, stiffness, energy dissipation, impact resistance, and toughness. The geometry of these composites can be developed using triply periodic minimal surfaces, which can be described mathematically by level-set functions [1]. This geometry allows each of the two interleaved materials to form a lattice, which can repeat itself continuously in three-dimensional (3D) space. This highly structured geometry makes co-continuous materials suitable for 3D printing. Tailoring such composite materials to give high fracture toughness and energy dissipation can make them useful for extreme condition applications …

Stochastic Virtual Tests For Fiber Composites, Brian Cox, H. A. Bale, B. C. Do M. Blacklock, R. O. Ritchie T. Fast, Q. D. Yang M. Rossol, D. B. Marshall F. Zok

Society of Engineering Science 51st Annual Technical Meeting Archive

We will describe a Virtual Test system for continuous fiber composites. The virtual test draws from a new wave of advanced experiments and theory that address physical, mathematical, and engineering aspects of material definition and failure prediction. The methods go far beyond currently standard tests and conventional FEM analysis to challenge our conception of what can constitute a practicable engineering approach. Emphasis will be given to high temperature ceramic matrix composites with textile reinforcement, which have been the subject material of the National Hypersonic Science Center, Materials and Structures, a joint AFOSR/NASA program. However, thematic topics also address generic fiber …

Continuum Mechanics Beyond The Second Law Of Thermodynamics, Martin Ostoja-Starzewski

Society of Engineering Science 51st Annual Technical Meeting Archive

The entire field of continuum mechanics has been developed subject to the second law of thermodynamics, requiring a non-negative rate of irreversible entropy production. Given the results in physics over the past two decades, this law is a restriction to macroscales because on very small scales and for very short times, the entropy production rate may become negative. This has been demonstrated by experiments, theory, and simulations. For example, the time-averaged shear stress for a system undergoing Couette flow has fluctuations ranging into the negative values. These results suggest that an extension of continuum mechanics should be made, wherein the …

Anterior Cruciate Ligament Biomechanics: Characterization And Computational Modeling Within A Full Knee Model, Kaitlyn Mallett, Ellen Arruda

Society of Engineering Science 51st Annual Technical Meeting Archive

Anterior cruciate ligament (ACL) replacements are among the most common knee ligament invasive procedures. Over 60% of sports-related surgeries in high school students are knee-related [1]. Many patients who have undergone ACL replacement surgeries have experienced long-term detrimental effects, including ruptures of the replacement tissue and the development of early onset osteoarthritis [2]. It is estimated that the combination of ACL and meniscal injuries can lead to the development of osteoarthritis in up to 48% of patients with replacements [3]. These complications pose a major challenge to health care professionals, and there is a pressing need to understand the mechanics …

Knee Loading For Abnormal Gait, J. Hutchison, D. Madsen, T. L. Norman, J. D. -Blaha

Society of Engineering Science 51st Annual Technical Meeting Archive

The purpose of the study was to develop a mathematical model for determining knee loads for abnormal gait. Abnormal gait was defined as a person with varus, i.e. “bowleggedness”, or a person who had an external rotation of the femur (or the inability to internally rotate the femur) which caused an indirect varus in the forward positions of gait. Conditions such as these have been observed clinically to result in increased wear on the medial condyle of total knee replacements. This problem was approached by imposing static equilibrium on the femur. This allowed the loads at the knee to be …

Methods To Determine The Volume Of Infrapatellar Fat Pad As An Indicator Of Anterior Cruciate Ligament Tear, Bharadwaj Cheruvu, Tarun Goswami, James Tsatalis, Richard Laughlin

Society of Engineering Science 51st Annual Technical Meeting Archive

Introduction: Anterior knee pain is a common problem which affects adolescents and young adults. The most common mechanism for anterior knee pain arises from combination of compression and shear forces across the patellofemoral joint. The structures that commonly cause anterior knee pain include medial and lateral retinaculum, the patellar subchondral bone, the anterior synovium, joint capsule, patellar tendon, and infrapatellar fat pad. It is important to develop methods to measure volume of infrapatellar fat pad without invasive means. The volume of the fat pad was determined based on 3D image reconstruction using Mimics (a software developed by Materialise), by ellipsoidal …

The Fierce Green Fire: Vol 5 Issue 4, Wofford College Environmental Studies Program

The Fierce Green Fire

No abstract provided.

The Santa Clara, 2014-10-02, Santa Clara University

The Santa Clara

No abstract provided.

Central Washington University Basketball Coaching Staff, Dean Nicholson, Central Washington University Athletics

Basketball

No abstract provided.

New Measurements Of Mcmurdo Gravity Wave Parameters, Jonathan Pugmire, Michael J. Taylor

Graduate Student Presentations

The ANtarctic Gravity Wave Instrument Network (ANGWIN) is an NSF sponsored international program designed to develop and utilize a network of gravity wave observatories using existing and new instrumentation operated at several established research stations around the continent. The primary goal is to better understand and quantify large-scale gravity wave climatology and their effects on the upper atmosphere over Antarctica. ANGWIN currently comprises research measurements from five nations (U.S., U.K., Australia, Japan, and Brazil) at seven international stations. Utah State University’s Atmospheric Imaging Lab operates all-sky infrared and CCD imagers and an Advanced Mesospheric Temperature Mapper (AMTM) imager at several …

Vol.42 N.10 October 2nd 2014, Brown Publishing Company

Black Voice News

No abstract provided.

Otter Realm, October 2, 2014, California State University, Monterey Bay

The Otter Realm

Viva La Herencia Hispanica! CSUMB Celebrates Chican@/Latin@ Heritage Month -- Seeing is Believing -- What You Otter Be Doing October 2 - October 15 -- Are You Afraid of the Dark? CSUMB Students Express Concerns About Campus Lighting and Safety -- Drop, Cover and Hold: Otters Prepare for the Great California Shakeout -- Not a Clear Ally: Students Face Challenges in Student Housing -- Serving Your World: Students Fulfill Service Learning Requirement Abroad -- Sirviendo Al Mundo: Estudiantes Hacen Su Servicio en Espana -- Viva La Herencia Hispanica! CSUMB Celebrates Chica@/Latin@ Heritage Month -- Sitting Pretty: Salinas SPCA Provides Happier …

Cmss Colloquium | Understanding The Properties Of Conformal Twodimensional Materials From Atomic Displacements, Oct. 2, Ohio University College Of Arts & Sciences

All Forum Articles

No abstract provided.

The Gazette October 2, 2014, Langston University

LU Gazette, 2010-2019

The student newspaper for Langston University

Curriculum Subcommittee Agenda, October 2, 2014, Utah State University

Educational Policies Committee

Applied Economics

• Course Description Change, Prerequisite Change, Dual List
• Title Change, Course Description Change

Nutrition, Dietetics and Food Sciences

• New Course
• Credit Hour Change
• Add University Studies Designation

Plant Soils and Climate

• Prerequisite Change, Course No. Change

Caine College of the Arts

• Add University Studies Designation

Accounting

• Course Description Change

COMMDDE

• New Course

HPER

• New Course
• Course Description Change/Title Change

Psychology

• Prerequisite Change

Teacher Education and Leadership

• Add Multiple List
• Course Description Change
• Delete Course (remove dual list)
• Title Change
• Course Description/Prerequisite Change
• New Course
• Grade Type

Civil and Environmental Engineering

• New Course
• Delete Course
• Prerequisite Change

Electrical and Computer …

Alta Wimmer For Herself, And For The Heirs Of Lori K. Wimmer, Deceased, Plaintiff/Appellant, Vs. Sunny Pandita, M.D. And David Scott Peterson, M.D., Defendants/Appellees, Utah Court Of Appeals

Utah Court of Appeals Briefs (2007– 2019)

Appeal from a Final Order of the Third Judicial District Court for Salt Lake County the Honorable Paul G. Maughan, District Court Judge, Presiding, District Court Case No. 050910577

Educational Policies Committee Minutes, October 2, 2014, Utah State University

Educational Policies Committee

• Subcommittee Reports
• Curriculum Subcommittee
• Course Approvals
• Program Proposals
• Academic Standards Subcommittee
• General Education Subcommittee

Curriculum Subcommittee Minutes, October 2, 2014, Utah State University

Educational Policies Committee

Applied Economics

• Course Description Change, Prerequisite Change, Dual List
• Title Change, Course Description Change

Nutrition, Dietetics and Food Sciences

• New Course
• Credit Hour Change
• Add University Studies Designation

Plant Soils and Climate

• Prerequisite Change, Course No. Change

Caine College of the Arts

• Add University Studies Designation

Accounting

• Course Description Change

COMMDDE

• New Course

HPER

• New Course
• Course Description Change, Title Change

Psychology

• Prerequisite Change

Teacher Education and Leadership

• Add Multiple List
• Course Description Change
• Delete Course (remove dual list)
• Add Multiple List
• Title Change
• Course Description, Prerequisite Change
• New Course
• Grade Type

Civil and Environmental Engineering

• New Course
• Delete Course …

The Grizzly, October 2, 2014, Rachel Brown, Bryce Pinkerton, Jaime Bocanumenth, Maxwell Bicking, Evan Hill, Caitlin Tillson, Kristen Costello, Lisa Abraham, Ayesha Contractor, Emily Duffy, Jordan Breslow, Jonathan Vander Lugt, Matthew Maldonado, Dana Feigenbaum

Ursinus College Grizzly Newspaper, 1978 to Present

UC Responds to Drop in Ranking • Ragball Tournament Returns • Assault Addressed • Letter to the Editor • Sustainability Kicks Off • What's the CSCG? • New Art Professor Explains Why She Came to Ursinus • Scudera Adapts Oscar Wilde • Opinion: Curbing Your Enthusiasm; Voting in Mid-Term Elections is Important • Snell Cup Allows Team to Interact with Past Players • Digging In: Groff Leads Volleyball to Hot Start • Fresh Faces

Lanthorn, Vol. 49, No. 13, October 2, 2014, Grand Valley State University

Volume 49, July 7, 2014 - June 1, 2015

Lanthorn is Grand Valley State's student newspaper, published from 1968 to the present.

Educational Policies Committee Agenda, October 2, 2014, Utah State University

Educational Policies Committee

• Subcommittee Reports
• Curriculum Subcommittee
• Course Approvals
• Academic Standards Subcommittee

The East Texan, 2014-10-02, Texas A&M University-Commerce

All Issues

A color copy of The East Texan, a student newspaper published at Texas A&M University-Commerce.

Translational Fidelity Of A Eukaryotic Glutaminyl-Trna Synthetase With An N-Terminal Domain Appendage, Aaron Bethea Rogers

Dissertations and Theses

Several Saccharomyces cerevisiae mutant tRNA^Q2 species (glutamine isoacceptor, CUG anticodon) were synthesized and assayed for aminoacylation activity with Saccharomyces cerevisiae glutaminyl-tRNA synthetase. The derived steady state parameters were compared to similar datasets from the literature. The mutants behaved analogously to similar mutant species based on tRNA from Escherichia coli, but with slightly relaxed specificity as revealed by comparison of k_cat/K_M values relative to wild type in vitro transcribed tRNA. Additionally the eukaryotic N-terminal domain appendage, as found in Sce glutaminyl-tRNA synthetase, is considered in light of the discovery of non-canonical aminoacyl-tRNA synthetase functions, including …

Baryon Spectrum Withnf=2+1+1twisted Mass Fermions, C. Alexandrou, V. Drach, K. Jansen, C. Kallidonis, G. Koutsou

School of Engineering, Computing and Mathematics

No abstract provided.

Mechanics Of Bioinspired Flexible Composites: Experiments, -Simulations, And Analytical Solutions, Stephan Rudykh, Mary Boyce

Society of Engineering Science 51st Annual Technical Meeting Archive

Motivated by designing bioinspired flexible armor, we study deformable layered materials reminiscent of the structures present on teleost fish species (e.g., zebrafish Danio rerio and Arapaima gigas) [1]. These materials comprise soft matrix and stiff layers. The overlapping stiff scales are embedded in a soft tissue such that the composite material can provide protection while also undergoing large deformations when subjected to a penetrating loading (such as a bullet, knife, or a powerful animal bite). Moreover, the layered materials hold a great potential for a large variety of applications including noise reduction [2] and actuation [3]. Here, we analyze the …

Time Varying Cell Forces – A New Paradigm In Cellular Mechanotransduction, M Taher Saif, Samantha Knoll

Society of Engineering Science 51st Annual Technical Meeting Archive

It is well known that cells generate forces on 2D substrates. These forces increase with time till they reach a steady value. The magnitude of the steady force depends on the stiffness of the substrates. This force is beieved to serve as a cue for the cell resulting in a wide variety of cell functions. Here we show, using fibroblasts and high-speed, high-resolution florescent microscopy, that cell forces are dynamic at any state of the cell. Cells generate time varying contractile forces all around the periphery at discrete adhesion points. The forces typically increase with time, drop suddenly over a …