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Professor Rosakis Named ICF Honorary Fellow and Vice President

07-21-17

Ares J. Rosakis, Theodore von Karman Professor of Aeronautics and Mechanical Engineering, has been named an honorary fellow of the International Congress on Fracture (ICF) which is the premier international body for promotion of worldwide cooperation among scientists and engineers concerned with the mechanics and mechanisms of fracture, fatigue, and strength of solids. He has also been elected as one of the group's three vice presidents.

Tags: honors GALCIT MCE Ares Rosakis

Earthquakes Can Make Thrust Faults Open Violently and Snap Shut

05-01-17

Ares J. Rosakis, Theodore von Karman Professor of Aeronautics and Mechanical Engineering, and colleagues at Caltech and École normale supérieure in Paris have discovered that fast ruptures propagating up toward the earth's surface along a thrust fault can cause one side of a fault to twist away from the other, opening up a gap of up to a few meters that then snaps shut. [Caltech story]

Tags: GALCIT MCE Ares Rosakis Hiroo Kanamori Harsha Bhat Vahe Gabuchian

The Future is Autonomous

05-01-17

On April 19, 2017 Electrical Engineering alumnus Evangelos Simoudis (BS '83) moderated a panel titled "The Road Ahead: A Panel on the Future of Driverless Vehicles," hosted by the Caltech Associates. The panel members were Professors Mory Gharib, Richard Murray, and Pietro Perona, along with Reuters automotive industry reporter, Paul Lienert. They discuss a variety of opportunities and challenges associated with autonomous technologies and systems. Beyond the legal and ethical challenges, several technological obstacles must be overcome before driverless cars become common on the road. One key challenge is teaching driverless cars how to read the behavior of other cars and react accordingly. Professor Perona described the problem of a car attempting to merge onto a crowded freeway. A driverless car would see an impenetrable wall of vehicles, but a human driver could edge forward and wave at other drivers to work his or her way into the line of traffic. [Caltech story]

Tags: EE GALCIT CMS Morteza Gharib Pietro Perona alumni Richard Murray Evangelos Simoudis Paul Lienert

New President of the French Academy of Sciences

02-02-17

Alumnus Sébastien Candel (PhD '72) has been elected as president of the French Academy of Sciences (Académie des sciences, Institut de France). The Academy, which was created in 1666, is committed to the advancement of science and advises government authorities on scientific issues.  Candel obtained his PhD in mechanical engineering and applied mathematics from Caltech and is a receipient of the Caltech Distinguished Alumni Award for his contributions to aerospace. [Caltech story] [Candel's Marble Lecture]

Tags: GALCIT MCE CMS alumni Sébastien Candel

Modular Space Telescope Could Be Assembled By Robot

09-28-16

Professor Sergio Pellegrino and colleagues including Professor Joel Burdick, are proposing a space observatory with a 100 meters diameter primary mirror. Their design calls for the use of more than 300 deployable truss modules that could be unfolded to form a scaffolding upon which a commensurate number of small mirror plates could be placed to create a large segmented mirror. In this concept, a spider-like, six-armed "hexbot" would assemble the trusswork and then crawl across the structure to build the mirror atop it. [Caltech story]

Tags: research highlights GALCIT MCE Sergio Pellegrino Joel Burdick

The Utility of Instability

08-08-16

Professors Dennis M. Kochmann and Chiara Daraio along with colleagues from Harvard have designed and created mechanical chains made of soft matter that can transmit signals across long distances. Because they are flexible, the circuits could be used in machines such as soft robots or lightweight aircraft constructed from pliable, nonmetallic materials. "Engineers tend to shy away from instability. "Though there are many applications, the fundamental principles that we explore are most exciting to me," Kochmann says. "These nonlinear systems show very similar behavior to materials at the atomic scale but these are difficult to access experimentally or computationally. Now we have built a simple macroscale analogue that mimics how they behave." [Caltech story]

Tags: research highlights Chiara Daraio GALCIT MCE Dennis Kochmann

Tyler Okamoto Receives 2016 Henry Ford II Scholar Award

06-01-16

Mechanical Engineering student Tyler Okamoto, mentored by Professor Sergio Pellegrino, is a recipient of the 2016 Henry Ford II Scholar Award. He is working with Professor Pellegrino’s team to build an autonomous reconfigurable space telescope using multiple nanosatellites that align in space to create a camera and mirror assembly. The Henry Ford II Scholar Award is funded under an endowment provided by the Ford Motor Company Fund. The award is made annually to engineering students with the best academic record at the end of the third year of undergraduate study.

Tags: honors GALCIT MCE Henry Ford II Scholar Award Sergio Pellegrino Tyler Okamoto

Professor Rosakis Elected to the National Academy of Sciences

05-03-16

Ares J. Rosakis, Theodore von Karman Professor of Aeronautics and Mechanical Engineering, has been elected to the National Academy of Sciences (NAS). His research interests span a wide spectrum of length and time scales and range from the mechanics of earthquake seismology, to the physical processes involved in the catastrophic failure of aerospace materials, to the reliability of micro-electronic and opto-electronic structures and devices. The National Academy of Sciences is a private organization of scientists and engineers dedicated to the furtherance of science and its use for the general welfare.[Caltech story] [List of NAS members]

Tags: honors GALCIT MCE Ares Rosakis NAS

Professor Rosakis Receives the Von Kármán Medal

03-22-16

Ares Rosakis, Theodore von Karman Professor of Aeronautics and Mechanical Engineering, will receive the Theodore von Kármán Medal from the American Society of Civil Engineers. The medal recognizes distinguished achievement in engineering mechanics. Professor Rosakis is being honored for "discovering several fundamental physical phenomena in dynamic fracture of heterogeneous materials and interfaces at various length and time scales.” [Caltech story]

Tags: honors GALCIT MCE Ares Rosakis

Moriah Bischann Wins SURF Speaking Competition

02-04-16

Material science undergraduate student Moriah Bischann, mentored by aerospace postdoctoral scholar, Dr. Owen Kingstedt, is the winner of the Doris S. Perpall Summer Undergraduate Research Fellowships (SURF) Speaking Competition. She was recognized as the best speakers-out of the 200 students who presented their SURF research. Her summer research focused on exploring the next generation of structural materials. During her ten week SURF project she studied the effects of alloying and processing on the dynamic behavior of magnesium (Mg). This work was done to address the larger question of whether Mg is a useful material for the automotive, aerospace, energy, and defense industries where a material is needed that has low density, but also the strength to withstand high impact forces.

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Tags: APhMS honors GALCIT research highlight Moriah Bischann Owen Kingstedt