Sooner Racing Team Has Top Ten at FSAE Nevada 2021!

The Sooner Racing Team (SRT) had a successful competition at Formula SAE Nevada, an engineering design competition for undergraduate and graduate students. Formula SAE is a student design competition organized by the Society of Automotive Engineers. The concept behind FSAE is that a fictional manufacturing company has contracted a design team to develop a small Formula-style race car. The prototype race car is to be evaluated for its potential as a production item. The target marketing group for the race car is the non-professional weekend autocross racer. Each student team designs, builds and tests a prototype based on a series of rules whose purpose is both to ensure onsite event operations and promote problem solving.

The competition took place from June 15th through to the 19th in blisteringly hot conditions at the Las Vegas Motor Speedway. At one point the temperature reached 117 degrees, and the surface of the track was recorded at around 140 degrees! There were 4 drivers representing the OU Sooner Racing Team, each doing 2 events. Tony Macaluso and Callen Koiner handled the autocross and endurance, while their teammates, Sierra Martinez and Isaac Fernald, handled acceleration and skid pad portions. There were 40 internal combustion teams registered for FSAE Nevada. Of those 40 teams, SRT finished 8th overall. In addition to their overall finish, they placed 2nd in both endurance and in fuel efficiency. With their 8th place finish, SRT finished in the top ten for the first time in more than a decade!

Congratulations, Sooner Racing Team! We are proud of your hard work and performance!

For more information on the Sooner Racing Team, visit their website, follow them on Twitter, or check out their Facebook page!

Crimson Skies

Crimson Skies is the University of Oklahoma’s DBF team that designs, fabricates, and tests a remote controlled aircraft for the AIAA Design, Build, Fly competition. The competition is an annual event hosted by the American Institute of Aeronautics and Astronautics, in which teams from across the globe compete by designing an unmanned, electric, remotely controlled aircraft to demonstrate flight capabilities that best meet the specified mission profile. 

The missions are different every year, which gives the students the opportunity for a new perspective and a chance to innovate in their design. This year, they were tasked with designing a vehicle which was capable of delivering a large payload of sensors. The remote controlled vehicle had to be capable of deploying one of these sensors while in flight, activating an LED pattern on the sensor, recover the sensor back into the aircraft again, and finally performing a successful landing. The individual sensors weighed 0.14 pounds and the aircraft was capable of carrying 35 sensors in total. The team had an overall emphasis on design simplicity but also an understanding that success relied on preparation for the unexpected. This viewpoint resulted in a very robust aircraft made primarily of foam-board to help absorb impact energy rather than spreading it to vital components. This decision had the added benefit of the foam-board being easily repaired with simple tools and materials and low overall weight. In this year’s competition, the maximum weight-limit of the aircraft was 55 pounds but Crimson Skies managed to keep their plane’s weight down to just 19.9 pounds in its heaviest configuration! The team also managed to keep their aircraft to 199.8 watt-hours of energy, just shy of the 200 watt-hour competition limit.

In 2020-21, DBF team was led by Dr. Thomas Hays, their faculty advisor, who played a crucial role in the team’s success. Dr. Hays helped guide the team to an understanding of the AIAA rules, the process of producing a competitive aircraft, and most importantly, by providing his experience with previous Crimson Skies teams. The team was also led by the Team Captain, Naimul Islam, as well as four sub team leads: Thomas Nilles, the chief engineer; Simon Dempsey, whose focus was on Aerodynamics; Adam Henning, who directed Propulsion design; and Blake Raybern, who led Computer Aided Design. During the design phase, the team had a peak of 21 engineering students on the team. The team also received the support and leadership of many OU alumni who volunteered their time to guide the team to a more reliable aircraft and a better understanding of the DBF competition.

 

In this year’s Design Build Fly Competition, Crimson Skies placed 13th out of 92 teams! This is a fantastic finish for the team, especially during a year that presented several COVID-19 related challenges that included a limit on the number of people that could work on the aircraft at one time. The team was able to achieve this success through the hard work and flexibility of every team member who went above and beyond to meet deadlines and produce results. 

For more information about the DBF Crimson Skies team, check out their Facebook page!

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Congratulations to Our 2021 Aerospace and Mechanical Engineering Graduates!

This semester we were able to resume in person graduation ceremonies. We want to celebrate each of our AME graduate’s success and wish them the best in their future endeavors!

2021 Masters of Science Degree Recipients

Tess Hartog
Luke Hudson
Paolo Acosta Mogollon
Stephanie Prado Carbonell
Robert Rucker
Brad Woolery

2021 Aerospace Engineering Bachelor of Science Degree Recipients 

Brandon M. Bargas
Kirsten N. Baxter
Luke W. Capehart
Dwight C. Caras
Eric D. Davidson
Simon J. Dempsey
Andrew R. Derryberry
David T. Dowdell
Burlon L. Giles
Nicholas W. Gruber
Adam C. Henning
Nathan W. Herring
Naimul Islam
Taylor R. Jovanovich
Jackson R. Kirby
Callen P. Koiner
Harold Nguyen
Tu T. Nguyen
Thomas M. Nilles
Caleb W. Olson
Zachary S. Randall
Blake D. Raybern
Westley S. Schubert
Robinson M. Shin
Tyler Swisher
Mitchell N. Tompkins
Steven D. Trellis
Faith E. Weber
Vincent G. Webster
Alex S. Zhang
Jun C. Zhang

2021 Mechanical Engineering Bachelor of Science Degree Recipients 

Ishmael Adotey
Travis W. Amstutz
Mohit S. Asnani
Bryce A. Barker
Benjamin W. Basden
Olivier A. Bebine
Caleb M. Bo
Timothy A. Braddy
William S. Callaway
Jaron W. Carvel
Patrick J. Castleberry
Andrew J. Cawley
Austin W. Chan
Eric Chavez
Sarah N. Ciccaglione
Alexander W. Cole
Edvin A. Coyoy Lopez
Aaron T. Craig
Kaamil M. Din
Kevin T. Doe
Harrison S. Dunlap
Martin Elder
Lauren E. Evans
Ariana N. Gannon
Jordan A. Givens
James B. Glock
Preston M. Godinich
Tyler L. Goehler
Nathan C. Grandstaff
Taylor R. Groves
James J. Hardiman
Katie P. Hastings
Hutch T. Helbig
Daniel C. Henry
Clare E. Hillshafer
Duncan G. Hilton
Paige N. Hobart
Hunter B. Hodges
George Huang
Luke T. Hudson
Ifeanyi E. Ijioma
Preston L. Johnson
Ryan R. Johnson
Cory B. Jones
Kiwon Kang
Bryce K. Kanon
Adam C. Kantner
Iain D. Kennedy
Scott M. King
Kevin A. Knop
Hunter M. Lau
Christopher L. Letson
Matthew Llano
Dylan P. Lloyd
Seth D. Long
Adrian E. Lopez
Trey Masri
David C. Mattax
Julian K. Mendiola
Corbin Joel B. Milchesky
Stuart B. Miller
Seapehi Molise
Ryan J. Myers
Caleb G. Nettles
Narcisse Ngole Ngando
Brian R. Nguyen
Tai T. Nguyen
Tobi T. Nguyen
John E. Perry
John H. Pham
Hannah C. Reiners
Jake A. Reynolds
Manuel A. Santiago
Sierra A. Seale
Stephanie C. Sheldon
MaKenzie B. Standridge
Brian R. Strub
Edgar P. Tita
Brady C. VanDyken
Alexander M. Varner
James G. Ware
Samantha M. Williams
Nathan J. Woo
Bradley D. Woolery
Yang Xu
Dongfang Zhao

Sooner Off-Road Team Has Their Most Successful Year

Since 2010, Sooner Off-Road has engineered a vehicle at the University of Oklahoma. Every year they design, manufacture, and compete with a Baja SAE vehicle. Baja SAE consists of three competitions that simulate real-world engineering projects and their related challenges. Engineering students are given a mission to design and build a single-seat, all-terrain, sporting vehicle that performs well with speed, handling, ride, and ruggedness over rough terrain and off-road conditions. This year the team was led by co-captains Ben Basden and Advika Kamatar and their advisor Dr. Chris Dalton to their most successful year ever!

The Sooner Off-Road team was able to compete in three events this year. One in-person event and, because of Covid-19, one event that took place virtually. In these events the team competed against teams from across the US as well as universities from around the world.

In the virtual competition, the team received 9th place in design presentation, 3rd in the business presentation, and 1st place in the cost presentation. Each of those results is the best the Sooner Off-Road team has ever done in the respective events. Overall, they ended up in 7th place, which is a fantastic result for the team!

For the in-person competition, they achieved 12th in maneuverability, 9th in hill climb, 3rd in suspension, and 2nd in acceleration.  Out of 45 teams who attempted the suspension course, they were one of only three teams to actually complete it. Amazingly, this is the best the Sooner Off-Road team has ever done in those events as well!

We are very proud of the Sooner Off-Road team and congratulate them for their tremendous success!

For more information about the Sooner Off-Road team, check out their Facebook page and follow them on Instagram.

 

 

 

 

 

Sooner Racing Team Begins Thousands Strong Campaign!

Sooner Racing Team has kicked off their Thousands Strong Campaign to raise money for the competition this year in Las Vegas! Help them reach their goal of $7,500 before their campaign ends on June 18.

The Sooner Racing Team is an OU student organization that designs, builds, tests, and races an open-wheel, formula-style race car. Each year, they compete against teams from around the world. SRT wants to take their 2021 car to the Formula SAE (Society of Automotive Engineers) competition in Las Vegas, Nevada, but we need your help getting there!

Formula SAE competitions provide an invaluable professional experience for our team members. We learn hands-on skills and have the opportunity to network with businesses in the automotive field as well as with students from over 600 other universities around the world. During this past school year, and during the COVID-19 pandemic, our team has been hard at work designing and manufacturing our 2021 car, but we need your financial support to get it to the competition. Your donations will help cover travel costs to get us on the road, and if we exceed our goal of $7,500, extra funds will be put towards purchasing new sets of racing tires and carbon fiber.

“Please help spread the word about our campaign by sharing the link with your friends and family via social media! We cannot compete to the highest of our ability without the support of our amazing OU friends and family!”

Donate Here: https://thousandsstrong.ou.edu/project/26136

Aerospace Seniors Achieve Perfect 4.0

Join us in honoring David Dowdell and Thomas Nilles, two Aerospace Engineering students who are graduating with an overall 4.0 grade-point average. These outstanding students have never received less than an “A” in any of their courses. On May 4th, they were honored by President Harroz at a ceremony for their accomplishments.

David Dowdell’s favorite part of AME at OU is the small class sizes; being able to get to know his classmates. Dowdell majored in Aerospace engineering because he wanted to study engineering and believed aerospace to be the most exciting option.

“As far as strategies for success go,” Dowdell said, “I think what helped me the most was trying to get every assignment done early if possible. Even it wasn’t possible, the extra time I’d spend thinking about it usually helped me understand it.”

His plans after graduation are to start working for Northrop Grumman in Palmdale, CA in August.

The first piece of advice he’d give to any student is, “to avoid procrastinating.” Dowdell says, “The second is to be willing to learn more than just what the classes teach. Engineering requires it.”

Thomas Nilles says, “the engineering projects are [his] favorite part of AME here at OU. Almost every engineering course [he’s] taken has had a project associated with it. They are stressful, but they are also fun and rewarding.”

As a kid, Nilles loved to play with Legos. He thinks that is what fostered his development as both a creative person and a builder. Flight was always mysterious and magical to Nilles. His desire to understand what makes aircraft fly really cemented his desire to be an aerospace engineer.

Nilles said, his, “calculator and 5-hour energy helped [him].” Far more important than those things, he says, are the people who helped him. He has had, “so many great professors here at OU that have been as invested in [his] success as [he’s] been.” Nilles appreciates that they go above and beyond for their students. He says his “dad has also been a huge part of [his] success.” He is not only his dad but also his friend and mentor. He has been there for Nilles in the toughest times. Nilles says he, “could not have succeeded here at OU without him.” Finally, he says he owes a great deal to his daughter who has been a constant source of joy in his life. She keeps him grounded and he loves her so much.

Nilles says for him, “it’s time to start building.” He’s had a lot of fun here at OU, but he looks forward to getting back to work. He said he’s, “keeping [his] fingers crossed for the right job to come along soon.”

“[His] advice for other students is to get into the right mindset. You are not here to get A’s. You are not here to get a degree. You are not here to get paid the big bucks someday. You are here to get an education. Education is a team sport so be a team player. Work with your professors, not against them. Help your classmates when you can. Get involved in the competition teams and take some friends with you to the meetings.”

AME Honors Student Award Recipients

The recipients of the Outstanding Student Awards and Graduate Student Awards were honored at the annual award ceremony on April 20th for their hard work and dedication during the 2020-2021 school year. Congratulations to these outstanding students for their achievements!

Top row left to right: Javad Asadi, Md Tanvir Ahad, Joshua Overcash, Benjamin Basden, Christopher Billings, Brenden Chenoweth, and Simon Dempsey.  Bottom row left to right: Roshan Sameer Annam, Anirban Mondal, Emmanuel Hakizimana, Christian Newkirk, Avinash Singh Nayal, Megan Fox, and Lydia England.

 

Outstanding Student Awards

The Outstanding Student Awards include seniors Benjamin Basden and Simon Dempsey, juniors Megan Fox and Joshua Overcash, and sophomores Lydia England and Christian Newkirk.

      Outstanding Senior in Mechanical Engineering: Benjamin Basden

“I’m studying mechanical engineering because I enjoy problem-solving. I started as a little kid working on mechanical components, and getting to OU and working on the Sooner Off-Road team, I have confirmed my love for engineering. After graduation, I will be working at John Zink Hamworthy Combustion in Tulsa, OK.”

         Outstanding Senior in Aerospace Engineering: Simon Dempsey

“I am studying aerospace engineering because I have been fascinated by flight since a very young age. I am excited to join the ranks of a new generation of aerospace engineers seeking to pursue new forms of cleaner air travel, expand humanity’s reach into space, and tackle a whole host of challenging issues. In order to better prepare myself, I will be pursuing a master’s in aerospace engineering after graduation at either Purdue or the University of Illinois.”

     Outstanding Junior in Aerospace Engineering: Megan Fox
“I’m studying Aerospace Engineering because of its wide range of applications. From drones that help in reforestation to helicopters that fly on Mars, there is always something new to build and discover in this field. Studying all of the different mechanisms that contribute to flight has been one of the most humbling and rewarding experiences.”
   Outstanding Junior in Mechanical Engineering: Joshua Overcash
Joshua Overcash is studying mechanical engineering because he enjoys problem-solving and learning about the laws and principles that govern the world around him. He appreciates the challenging coursework and looks forward to using his degree to make a difference.
Outstanding Sophomore in Aerospace Engineering: Lydia England
“Space has always fascinated me. I love the excitement of discovery and creativity that is ever-present in the STEM field and the experimental and analytical aspects of engineering. Several times, I have set my alarm for the middle of the night to wake up and watch live streams of the critical moments of NASA or SpaceX missions, like spacecraft launches and the final moments of the Cassini mission. I am thrilled to be pursuing a career in Aerospace Engineering. In recent history, we looked to the heavens and found that they were within our reach. I hope to be a part of reviving our excitement to explore beyond this world, to pursue personal and scientific growth to the limits of my imagination and capability, and to inspire and educate others to do the same.”
Outstanding Sophomore in Mechanical Engineering: Christian Newkirk

“I’m studying mechanical engineering because of my interest in math and physics. One day I hope to work in the space industry and design space flight systems.”

 

Graduate Student Awards

Marathon Oil Scholarship:

Christopher Billings

 

John E. Francis Scholarship:

Avinash Singh Nayal

Md Tanvir Ahad

 

Jim and Bee Close Scholarship:

Emmanuel Hakizimana

Anirban Mondal

Mohammad Naghashnejad

Fatema Tarannum

Javad Asadi

Parisa Marashizadeh

Roshan Sameer Annam

Avinash Singh Nayal

 

Frank Chuck Mechanical Engineering Scholarship:

Mohammad Abshirini

 

AME Alumni Highlights: Alex Bryant and Dr. Levent Aktas

AME is delighted to have such talented Alumni who continue to make us proud after graduation. This month, we’re highlighting Dr. Levent Aktas, who received his Masters and Ph.D. from AME in 2002 and 2008 respectively, and Alex Bryant, who received his undergraduate aerospace degree in 2019 and master’s degree in 2020.

Levent Aktas, PhD

Current Position: Materials and Processes Lead Engineer at Boeing

Undergraduate and Graduate Experience:
BS, Middle East Technical University, 2001
MS, University of Oklahoma, 2002
Ph.D., University of Oklahoma, 2008

As a Technical Lead Engineer at Boeing, I am responsible for maintaining materials and process specs, making sure appropriate processes are followed during the fabrication of composites, and qualification of all metal bond and composite aircraft components used in a multitude of platforms.

My graduate degree equipped me with a deeper knowledge of composites that separates me from other engineers in my company. In addition to specific technical skills, graduate studies equipped me with technical writing skills and communication skills that help me every day.

aktas@ou.edu

Alex Bryant

Current Position: Aeronautical Engineer, Lockheed Martin Aeronautics

I have been working as an aircraft performance engineer during most of my time here at Lockheed. I have also had the opportunity to travel with the Stability & Control team for wind tunnel testing for several programs. In the next six months, I will be transitioning into a role on the conceptual design team within Lockheed’s Advanced Development Programs.

I was the aerodynamics lead for the aerospace capstone class Design-Build-Fly (DBF) team as a senior. Helped lead an underclassman aircraft construction project as a junior.

I specialized in aerodynamics for my Master’s Degree and took classes in advanced aerodynamics, composites, and computational fluid dynamics. My Master’s thesis topic was using a combination of experimental measurements and CFD to create a high fidelity propeller thrust model for use in US Navy UAVs.

My Master’s degree served me well in several ways. Teaching a wind tunnel lab section helped mold me into a better teacher, which, in addition to rehashing important material from undergrad, will serve me well when mentoring younger engineers someday. The advanced classes I took in aerodynamics and CFD have helped me in my current role within flight sciences. My thesis project forced me to put together my own schedule for research and testing and forced me to lean upon a broad base of knowledge from undergraduate courses. All of these experiences have helped mold me into a well-rounded engineer at Lockheed.

I would be lying if I said some of my favorite memories weren’t sports-related. I may be a nerd’s nerd, but I’m a sports junkie at heart. The countless OU football home games with Baker Mayfield, Kyler Murray, etc., watching OU softball win a national championship in person, I was spoiled as a sports fan. Some of my other favorite memories were the little things you don’t even realize you miss until much later, whether it’s getting donuts at 3AM or playing videogames until dawn with your roommates, the various projects that brought their fair share of frustration and elation, or just the general helter-skelter chaos of being on your own for the first time as a freshman. I’d do it all again (well, most of it, maybe not finals).

alexander.bryant@alumni.ou.edu

Dr. Gan Receives George Lynn Cross Research Professorship

Rong Zhu Gan

Dr. Rong Gan has received the George Lynn Cross Research Professorship, the highest research and creative activity honor given by the University to a faculty member who has demonstrated outstanding leadership over a period of years in his or her field of learning or creative activity. Join us in honoring Dr. Gan for this remarkable achievement!

Dr. Gan came to OU in 1999 after serving as the Director of Biomedical Engineering at Hough Ear Institute in Oklahoma City and has been a part of AME since. She says this is because of her strong foundation here at AME. She has a “good connection with the Health Science Center and the Norman Campus.” Dr. Gan said she also has a lot of support here from her mentors, the University, and the “excellent students.”

“No matter what kind of student, no matter their background,” Dr. Gan says, “you have to pay attention to them and guide them.” You have to, “know how to mentor them because they are so important to research.” Dr. Gan wants students to be motivated for their future because the future is, “totally in their hands.”

Dr. Gan says the George Lynn Cross Research Professorship is a huge recognition of accomplishment for her research and education, two things, Dr. Gan says, “are connected and can’t be separated.” She says researchers must-have, “100% confidence in their original area, but have to look for a new direction because there must be innovation to solve the problem.” Dr. Gan’s advice for researchers is to seek innovation, collaboration, and for them to publish their work. She says for people to, “always keep good motivation and to work hard,” for the benefit of future generations.

See the article below for more information about Dr. Gan’s research and awards:

With her strong background in biomechanics and implantable devices, Dr. Gan has developed a truly transformational, well-funded research program at OU in Biomechanics for Protection and Restoration of Hearing, including implantable hearing devices, dynamic properties of ear tissues, auditory function tests, and computational modeling of sound and blast wave transmission through the ear.

As PI for all of her funded research projects, Dr. Gan has built an exceptionally strong research group that simultaneously conducts physical experiments in animals and human cadavers as well as foundational 3D computational modeling of human and animal ears.

The ability to carry out all these research activities covering both basic and applied research, instrumentation, data acquisition, theoretical modeling, and device design and testing in one lab is Dr. Gan’s research strength. She uses biomechanics systems approaches as fundamental methods with the goal to develop innovative technologies for measuring sound or blast wave transmission through the ear and the 3D physics-based computational model of the human ear for an understanding of hearing and protection mechanisms, improving diagnosis of middle ear diseases, and serving as a tool for the design and evaluation of implantable hearing devices and hearing protection devices.

Dr. Gan’s research work has been mainly funded by highly competitive grants from Federal and State government agencies such as the DOD, NIH, NSF, OCAST, and the Whitaker Foundation. Particularly in recent years, Dr. Gan’s research activities have been extended into new areas of biomechanical modeling and measurement of blast injury and hearing protection mechanisms for U.S. military priority research. This innovative development is based on original concepts of normal sound transmission through the ear and stimulated by Dr. Gan’s scholarship in the areas of measurements in human cadaver and animal ears and the finite element modeling of sound transmission through the ear.

Dr. Gan’s research has resulted in numerous publications and led to breakthroughs in implantable devices, computational modeling, and therapeutics for hearing restoration with 4 patents (two pending approval). She is a world-class researcher, a truly exceptional scholar, and among the very best educators we have at the University of Oklahoma. Her research has a direct impact on human health in terms of restoring hearing and improving the quality of life for the 38 million Americans with hearing impairment and providing hearing protection for military personnel. The George Lynn Cross Research Professorship award is a recognition of her superb research productivity and remarkable contributions to biomedical engineering research and education at the University of Oklahoma.

Click here to find the Norman Campus Faculty Tribute Award article written about Dr. Gan.

Parisa Marashizadeh Receives Nancy Mergler and Bullard Dissertation Completion Fellowship

AME is proud to share that Parisa Marashizadeh, a Ph.D. candidate in Mechanical Engineering, has received the Nancy Mergler and Bullard Dissertation Completion Fellowship! This fellowship is awarded to doctoral candidates who are in the final phases of dissertation writing.

Marashizadeh is originally from Iran, where she received her master’s degree in Mechanical Engineering from the Polytechnic University in Tehran in 2015. She started her Ph.D. program here at OU in 2017 where she began work with Dr. Yingtao Liu in multi-scale modeling of hybrid fiber composites.

Her work as a graduate teaching assistant at AME, “helped [her] to gain teaching skills essential to [her] academic career.” Marashizadeh also enjoys, “working with the kind and supportive staff, faculty members, and students.”

During her research, she has evaluated the interfacial properties of ZnO nanowires hybrid fiber-reinforced composite structures numerically at multiple length scales. The applications of fiber-reinforced composites have increased significantly in different engineering fields due to their outstanding properties, such as lightweight and high strength. For example, 50% of the Boeing 787 Dreamliner is made of fiber composites. The strength and toughness of composites greatly depend on the fiber-matrix adhesion (interface) properties through multiple length scales.

“With the [Nancy Mergler and Bullard Dissertation Completion Fellowship],” Marashizadeh says, “she has time in the last semester to, dedicate to completing [her] dissertation.” She says, “every Ph.D. student struggles with the last semester, it’s difficult to complete your dissertation, prepare your defense plan, and look for a PostDoc position.” She’s very grateful for the award and would like to thank Dr. Liu for supporting her. Marashizadeh plans to receive her Ph.D. in the Spring of 2022,  and afterward, she hopes to find a PostDoc position.

Marashizadeh’s advice to students is to, “fall in love with what you are doing and try your best because each of us can do a lot we just need to be focused and try.”

Below is a full summary of Marashizadeh’s research importance and accomplishments. Congratulations Parisa!

The applications of fiber-reinforced composites have increased significantly in different engineering fields due to their outstanding properties, such as lightweight and high strength. For example, 50% of the Boeing 787 Dreamliner is made of fiber composites. The strength and toughness of composites greatly depend on the fiber-matrix adhesion (interface) properties through multiple length scales. One novel approach to enhance the fiber/polymer adhesion properties is growing Zinc Oxide (ZnO) nanowires on the fiber surface. It is very critical for industrial companies to evaluate the impact of hybrid composites on the performance of the structures before considering them for production. However, due to the complexity of the theoretical and experimental analysis of such a hybrid structure, especially the nanomaterials, numerical analysis is required to understand this system’s efficiency on the performance of the composite.

In this research work, a numerical approach is developed to evaluate the enhanced properties of the hybrid composite structures by breaking the complicated system into multiple levels and investigate the properties of each level separately. There are four different length scales in the hybrid composites, which can be summarized as (a) ZnO nanowires with various diameters and lengths at the nano-scale, (b) the intermediate composition in which ZnO nanowires are grown on the fiber and embedded in the matrix (micro-scale), (c) the adhesion bonding between the fiber and the matrix (meso-scale), (d) the overall properties of the hybrid composite, the related failure analysis and performance of the structure at different loading conditions (macro-scale). Each of the mentioned length scales has its specific theories and properties that should be explored to evaluate the hybrid structure’s performance. Multi-scale modeling is developed in my research to make a bridge between the analysis at different scales to estimate the general behavior of structures containing materials at different length scales. The overall goal of multi-scale modeling techniques for hybrid composites is to combine the mechanical theories at different length scales and understand their static and dynamic behaviors under various loads and environmental conditions.

The dissertation elements and the completion plan is based on the steps in the multi-scale approach. According to the research plan, the dissertation is categorized into two main parts. The first part, which covers around 60% of the total dissertation, consists of the micro-scale, meso-scale, and macro-scale analysis. These three parts are completed, and the results are published in three journal articles and two conference papers.

The second part weighing around 40% of the dissertation, is based on the atomistic modeling and analysis of the hybrid composite materials. According to Marashizadeh’s research plan, the nano-scale analysis itself is divided into two sections. In the first part, the atomic structure of a single ZnO nanowire, polymer matrix chain, and Carbon fiber is simulated. The materials are assembled, and Molecular Dynamics (MD) simulation is employed to evaluate the adhesion strength between graphene and the matrix. This analysis part is completed, and a journal article has been prepared based on the obtained results. The article has been submitted and is under review. In the second part of the nano-scale section, the effect of multiple ZnO nanowires’ diameters and lengths on improving the interfacial adhesion between fiber and enhancement layer are being explored. She plans to complete this section by July 2021 and prepare another journal paper based on the outcome. Then, Marashizadeh will combine all the numerical analyses performed at different levels and develop a multi-scale framework to report the impact of grown ZnO nanowires on the properties of the hybrid composites.