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Voiland College of Engineering and Architecture Voiland College of Engineering and Architecture

Boeing Career Development Lecture Series

Boeing’s Justin Obrien will visit the WSU campus as a speaker. The topic will be The Future …Today.

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Boeing Career Development Lecture Series

Boeing’s Christin Datz will visit the WSU campus as a speaker. The topic will be Eco Demonstration.

This event is open to all students.

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Boeing Career Development Lecture Series

Boeing’s David A. Okrent will be visiting the WSU campus as a speaker. His topic will be Aerospace Marketing.

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Westrock Information Session and Interviews

Westrock is recruiting for Summer, 2018 internships in maintenance, operations and process control engineering departments. For mechanical, electrical and chemical engineering students from the sophomore class and above, an information session will be an opportunity to learn more about the company. Interviews will be held the following day for select candidates.

To apply, email a copy of your resume and cover letter to Jim Barnett jbarnett@westrock.com by Monday, January 22nd 2018. Reference Summer 2018 internship and your major in the subject line, or bring your cover letter and resume to the information session.

Boeing Career Development Lecture Series

Boeing’s Guijun Wang will visit WSU as a speaker. The topic is Automation and the Internet of Things.

This event is open to all students.

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Boeing Career Development Lecture Series

Boeing’s Paul Dees will visit WSU as a speaker. His topic is Aviation History in the Pacific Northwest.

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MME Seminar Series Welcomes Mr. Adnan Morshed, PhD Candidate, Washington State University

Mr. Adnan Morshed

PhD Candidate, School of Mechanical and Materials Engineering, Washington State University

Held in ETRL 101

Refreshments served in ETRL 119 at 10:30 am

Modeling of Biomechanical Systems in Microfluidic Device

Abstract

Electrodeformation of vesicles can be used as a useful tool to understand the characteristics of biological soft matter. Microfluidic devices are especially useful in this regard where the vesicles immersed in a fluid medium are subjected to an applied electric field. With minimal effort, a lot of intricate geometry can be imprinted in microfluidic chips which allows to observe the shift in vesicle deformation behavior. Modeling this kind of physical system requires consideration of both electric and hydrodynamic descriptions. The complex response of the vesicle membrane strongly depends on the conductivity of surrounding fluid, vesicle size and shape, and applied electric field. We studied the electrodeformation of vesicles immersed in a fluid media under a short DC electric pulse. An immersed interface method is used to solve the electric field over the domain with conductive or     non-conductive vesicles while an immersed boundary scheme is employed to solve fluid flow, fluid-solid interaction, membrane mechanics and vesicle movement. Force analysis on the membrane surface reveals almost linear relation with vesicle size, but highly nonlinear influence of applied field as well as the conductivity ratios inside and outside of the vesicle. Results also point towards an early linear deformation regime followed by an equilibrium stage for the membranes. Moreover, significant influence of the initial aspect ratio of the vesicle on the force distribution is observed across a range of conductivity ratios.

Biography

Adnan Morshed is in the third year of his PhD program at MME. His primary research interest is in the modeling of micro- and nanoscale biological phenomena. At present, his research is focused on the numerical exploration of experimentally hard to reach terrains in soft biological vesicles and studying key biophysical pathways in cancer propagation. He completed his B.Sc. and M.Sc. in mechanical engineering from Bangladesh University of Engineering and Technology (BUET).

Adnan enjoys computer programming and is fascinated with typography. He loves hiking and exploring the beautiful Northwest.

 

 

Balancing Act

Cammi Smith, wearing graduation attire, stands on stage.
During her undergraduate career, recent computer science graduate Cammi Smith lived a double life – balancing computer science with a love of theater. While the two interests may not seem related, both aspects of her life were complementary. Smith found that her computer science skills help the theater, but her time in the theater also enriched her student experience.  Smith fell in love with coding after taking a computer science elective in high school. She loves using technology to create. Smith enjoyed the fast pace of the tech industry, especially the ever-changing implementation of new software and machinery. » More ...

MME Seminar Series Welcomes Dr. Georges Ayoub, University of Michigan

Dr. Georges Ayoub

Assistant Professor, Industrial & Manufacturing Systems Engineering, University of  Michigan– Dearborn

Held in the  ETRL 101 Lecture Hall

Refreshments served in ETRL 119 at 10:30 am

Uncovering the deformation mechanisms in Ti/TiN multi layer under compressive, multi axial and nano-indention behavior with MD simulations

 

Abstract

The promising mechanical, physical and chemical properties of nano-scale metal/ceramic multilayers (MCMs) are of high interest for extreme environment applications. Understanding the plastic deformation mechanisms and the variables affecting those properties is therefore essential. The interface characteristics and the plastic deformation mechanisms under compressive, multiaxial and nano-indentation loadings in a Ti/TiN multilayer with a semi-coherent interface are numerically investigated. The interface structure of the Ti/TiN interface and the interface misfit dislocation were characterized using molecular dynamic simulations combined with atomically informed Frank-Bilby method. Three possible atomic stacking interface structures are identified according to the crystallographic analysis of the interface. Upon relaxation, large interface areas are occupied with the energetically stable configuration. Furthermore, the higher energy stacking are transformed into misfit dislocations or dislocation nodes. The Ti/TiN multilayer structure shows high strength and ductility under uniform compression loading. However, low strength and ductility are observed under tensile loading favored by crack initiation and propagation. Unlike typical metal stress-strain curves, metal/ceramic multilayers show two main yield points. Furthermore, the Ti/TiN multilayer structure shows three distinctive peak points for compressive loading normal and parallel to the interface. Furthermore, the misfit dislocation network at the Ti-TiN interface is found to dissociate to partials under driving force on the indenter tip and play an important role in the strengthening of Ti/TiN multilayers. We have observed several deformation mechanisms such as dislocation pile-up on the interface, and movement of misfit dislocations.

 

 Biography

Dr. Georges Ayoub completed his Ph.D at Lille University of science and technology in north France. Dr. Ayoub obtained his Master’s degree in 2007, also from Lille 1 University. Dr. Ayoub undergraduate work was completed at the Polytechnic Engineering School of the Lille 1 University (Polytech’Lille) in the field of mechanical engineering. Dr. Ayoub also obtained an Undergraduate Diploma in materials science at the University of Rennes 1 with highest distinction.

As a researcher, Dr. Ayoub started his career working in the capacity of a Post-doctoral Research Fellow at Texas A&M University at Qatar. He was promoted, in 2012 to Assistant Research Scientist and took leadership over 3 research projects in Qatar. Since then he has been able to establish his own independent research program and was awarded funding for 3 projects. Between August 2014 and August 2016 Dr. Ayoub worked as assistant professor at the American University of Beirut (AUB) and maintained an affiliation with Texas A&M University at Qatar as a Visiting Associate Research Scientist. Dr. Ayoub joined the University of Michigan Dearborn in September 2016, as assistant professor. His research projects involve experimental testing, characterizing and modeling the behavior of polymers and metal alloys. The research also entails developing algorithms and coupling them with finite element analysis to predict the material behavior under desired temperatures, deformation rates and loading conditions. Dr. Ayoub research has been published in more than 30 journal papers appearing in journals with high impact factors.

 

Boeing Speaker Series: Michael Erickson

Boeing’s Michael Erickson will visit WSU as a speaker. His topic is “Visual Practitioner.”

This event is open to all students.

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