Multifunctional Material and Aerospace Structures Optimization Lab – Page 5 – Research website for the Hartl research team at Texas A&M

MAESTRO “retreats” to the Ozarks

Posted on August 25, 2021 by Patrick

TAMU retreat attendees. Not pictured: Honorary guest Michael Bass from Boeing.

Continuing the tradition that was postponed last year, MAESTRO students and a distinguished guest converged on Ponca, AR for four days of technical activities and outdoor recreation. The event was held at the “Cedar Creek Lodge,” a stunning venue nestled in Ozark National Forest near the Buffalo National River. Senior PhD students Allen Davis, Jacob Mingear, and Patrick Walgren gave in-depth technical presentations on their current research projects, showing the other students “how it is done.” [Read more…] about MAESTRO “retreats” to the Ozarks

MAESTRO Students Take Poster Session By Storm

Posted on August 6, 2021 by Patrick

Three MAESTRO graduate students presented their work at the Air Force Research Laboratory (AFRL) Materials and Manufacturing Directorate Summer Student Poster Session on August 5th, 2021. Incoming Master’s student Jared Lilly discussed his efforts on designing bending cylinders for high-temperature environments, current Master’s student Jessica Zamarripa presented her work on extending SPIDRS L-System encodings to circuit design and fabricating flexible capacitors, and current PhD student Patrick Walgren discussed novel reduced order design methods for efficient structural optimization. Great job guys!

Efficient and interpretable reduced order modeling of nonlinear structures.

Discovering optimal flexible circuits using graph-based L-system network optimization

Structural design of a compliant bending cylinder for high-supersonic applications

Texas A&M Featured Story: MAESTRO Lab’s Work toward Quiet Aircraft

Posted on July 14, 2021 by Darren J. Hartl

Research now shows that inserting an S-shaped, shape-memory alloy filler in aircraft wings can reduce the unpleasant noise created while landing.

Researchers at Texas A&M University have conducted a computational study that validates using a shape-memory alloy to reduce the jarring sounds of commercial airplanes during landing. They say these materials could be inserted as passive, seamless fillers within airplane wings that automatically deploy themselves into the perfect position during descent.

“When landing, aircraft engines are throttled way back, and so they are very quiet. Any other source of noise, like that from the wings, becomes quite noticeable to the people on the ground,” said Darren Hartl, assistant professor in the Department of Aerospace Engineering. “We want to create structures that will not change anything about the flight characteristics of the plane and yet dramatically reduce the noise problem.”

The researchers have described their findings in the Journal of Aircraft.

MAESTRO PhD student Trent White awarded DoD SMART Fellowship

Posted on July 8, 2021 by Darren J. Hartl

Trent White will join the U.S. Army Research Laboratory after graduation to work on aeroelastic problems. | Image: Courtesy of Trent White

Trent White, a doctoral student in the Department of Aerospace Engineering at Texas A&M University, was awarded the Science, Mathematics and Research for Transformation (SMART) Scholarship.

The SMART Scholarship-for-Service Program is funded by the Department of Defense (DOD) and provides students full tuition to pursue degrees in science, technology, engineering and mathematics (STEM) fields. After graduation, SMART scholars apply their education and research experience as civilian employees with the DOD.

White has been recruited to join the U.S. Army Research Laboratory (ARL) – Weapons and Materials Research Directorate after graduation to work on developing algorithmic advances and computational tools for evaluating aeroelasticity problems.

Aeroelasticity is a branch of applied mechanics that studies the interaction between fluid and flexible solid structures. According to White, aeroelastic problems are notoriously difficult and expensive to evaluate when highly accurate solutions are desired, so such tools cannot practically be used during system design.

“The hope is that my research will lead to significant reductions in the cost and complexity associated with analyzing these problems, thereby enabling engineers to incorporate high-fidelity aeroelasticity into more system design frameworks,” he said.

White already has experience with this research and working with the ARL. After receiving his bachelor’s degree in aerospace engineering at Texas A&M, he participated in ARL’s summer internship program, working with a team in the Vehicle Technology Directorate. Later, he was awarded a Journeyman Fellowship from the ARL, which funded the first two years of his doctoral program.

Since then, he’s contributed to a Texas A&M collaboration with ARL to develop morphing drones using a novel fluid-structure interaction algorithm. This opportunity came from his involvement as a student research assistant in the Multifunctional Materials and Aerospace Structures Optimization (M²AESTRO) Lab.

“Trent is the perfect student to challenge with these difficult problems,” said his advisor, Dr. Darren Hartl, assistant professor in the Department of Aerospace Engineering and director of the M²AESTRO Lab. “He is curious and careful but optimistic and easy to work with. He is just the kind of high-performance scholar that deserves a fellowship like the SMART.”

White recently joined another collaborative project between Texas A&M, The Boeing Company and the Army to design and develop morphing rotorcraft technologies.

“The current motivation behind our research is to develop those aeroelastic analysis algorithms and computational tools so that we can use them to design morphing aerial vehicles,” said White.

[Original story by Felysha Walker]

Founding student Pedro Leal defends his Ph.D. dissertation

Posted on June 4, 2021 by Darren J. Hartl

On May 28, 2021, Pedro B. C. Leal became the latest student to successfully complete the journey to a doctoral degree under Dr. Hartl. Pedro was one of the first students recruited into the MAESTRO Laboratory at its founding, having also spent his senior year working under Dr. Hartl before returning to Brazil to complete his undergraduate degree and also obtain a Masters of Science.

Retro Rocket closer to completion

Posted on May 3, 2021 by Darren J. Hartl

The second AERO 402 capstone design team to address Retro Rocket development challenges completed their work this week, releasing a second summary video that provides project history and updates.

Hartl wins Association of Former Students College-Level Distinguished Teaching Award

Posted on April 30, 2021 by Darren J. Hartl

As officially announced in April, Dr. Hartl was named a winner of a 2020-2021 Association of Former Students College-Level Distinguished Teaching Awards. The nomination packet included letters of support and nomination from several past students and past teaching assistants, including some who have successfully transitioned coursework content into critical professional capabilities.

[Original Story]

MAESTRO-affiliated VR flight simulator continues to progress

Posted on April 12, 2021 by Darren J. Hartl

Screenshot of a virtual reality flight simulation showing a maroon and white aircraft flying through large golden rings above a map of Texas A&M University. — Aerospace engineering students designed an immersive virtual reality flight simulation rooted in real-world dynamics to inspire the next generation of engineers. | Image: Courtesy of Team Retro Rocket

[Original story by Felysha Walker] [UPDATE: Television news coverage by KXXV and KAGS]

Students at Texas A&M University are bringing vintage into the future with a new virtual reality (VR) experience for aspiring engineers — the Retro Rocket.

Teams from the Department of Aerospace Engineering and J. Mike Walker ’66 Department of Mechanical Engineering have worked to repurpose an old metal rocket car from a 1950s carnival ride and turn it into a VR flight simulator. The end product will travel with Spark! PK-12, the College of Engineering’s STEM (science, technology, engineering and math) outreach group, to introduce young minds to the excitement of engineering.

Hartl and collaborators granted patent for liquid metal reconfigurable antenna

Posted on March 11, 2021 by Darren J. Hartl

Scientists at the Air Force Research Laboratory in Ohio used a 3D printer to prototype and bench test what they call a “structurally embedded vascular antenna.”

The antenna’s elements can be manipulated, changing their radiation patterns and frequency response, by pumping liquid metal alloy in and out of the tubes that make up the vascular network. Flow meters and optical sensors control the pump.

It’s a slick idea and allows the formation of antennas inside structures that can change shapes delivering “electromagnetic agility.” [Continue reading Original Story by Troy Carter]

Hartl breaks 4000 citation mark on Google Scholar

Posted on March 4, 2021 by Darren J. Hartl

Only 17 months after reaching 3000 citations and while still officially an Assistant Professor, Dr. Hartl has reached the 4000 citation mark according to Google Scholar.

With an h-index of 25 and with 65 publications having over 10 citations, Dr. Hartl continues to work with his students to make an impact on the smart materials and adaptive structures community in particular. Highly cited publications from the MAESTRO Lab address such topics as shape memory alloys, active origami, and multi-functional composites. Newer papers have addressed fracture and fatigue of shape memory alloy materials, new topological design methods, new actuator concepts, and new methods for coupled fluid-structural analysis specifically tuned for adaptive aerostructures applications.