Paul Stovall, Supervisor, manages the lab and is available for consultation. G. Bradford Jones Professor of Mechanical Engineering and Applied Physics; Investigator, Heritage Medical Research Institute. Rayleigh-Taylor instabilities appear when a heavy fluid is placed on top of a light fluid. Mechanical and Civil Engineers shape our physical environment from the cities we live in, the machines we use, the way we travel, the energy that powers these to delivering the water we need. Some dunes emit a persistent, low-frequency sound during a slumping event or a natural avalanche on the leeward face of the dune. This has motivated a number of approaches for multiscale modeling, but they often use specific and ad hoc assumptions about the interactions. The objective of the undergraduate program in Mechanical Engineering at Caltech is to produce graduates who will attain careers and higher education that ultimately lead to leadership roles in academia, industry, and government in areas of rapidly advancing interdisciplinary technology related to fluid, solid, thermal, and mechanical systems. Leadership Chair, Division of Biology and Biological Engineering. The light fluid rises as a result of buoyancy forces, and in many cases, the flow transitions rapidly to turbulence. Caltech Engineering and Applied Science Mechanical and Civil Engineering Department website. We use fieldobservations, seismological and geodetic measurements, remote sensing to developkinematic and dynamic modelsand inform theory. . Professor of Engineering Seismology, Emeritus. Post-Doctoral Scholars, Research Scientists and Visiting Associates Currently in Academia H. Tippur, Professor of Mechanical Engineering, Auburn University F. Benitez, Professor of Mechanical and Industrial Engineering, University of Seville, Spain M. Zhou, Associate Professor of Mechanical Engineering, Georgia Tech Research and STEM Activities Currently employed as Mechanical Engineering intern at Beta Technologies helping advance the future of electric vertical takeoff and landing aircraft. The Science of Underground Kingdoms. 3. Actuation remains a significant challenge in soft robotics. The strongest fiber in the world is allegedly Dyneema. Nathaniel Gage, pioneer in the scientific understanding of teaching. The frictional interface (fault) forms various angles with the compression axis to provide the shear driving force necessary for continued rupturing. associate professor of mechanical engineering Betar Gallant, and four others at MIT and Caltech. Richard L. and Dorothy M. Hayman Professor of Mechanical Engineering and Bioengineering; Jet Propulsion Laboratory Research Scientist . These instabilities might lead ultimately to unstable combustion, flashback, blow-off, and noise. These students will have priority over all other lab users when their class is in session. 2022 Caltech. We are exploring the use of the modularity of protein domains to design circuit elements that can be reused more easily than existing components, and we will test our circuits across a variety of cellular contexts to assess robustness as a fundamental property of the design. High-density epidural spinal stimulation, uses sheet-like arrays of numerous electrodes to stimulate neurons. Ground penetrating radar image of a large sand dune at Eureka Dunes, Death Valley, California. Caltech is home to more than 50 research centers and institutes. Dr. Mello (Ph.D., Caltech, 2012) is a Teaching Professor with prior industry experience as a Senior Electronic Packaging Engineer and Mechanical Laboratory Manager at Intel Corporation (1997 - 2006). We are also modeling the growth and collapse of cavitation bubbles in micro-vessels as a model for the tissue injury that occurs in lithotripsy. Privacy Notice. Professor Ravichandran's research focuses on deformation and failure of materials, dynamic behavior, wave propagation, micro/nano mechanics, composites, active materials, biomaterials and cell mechanics, and experimental mechanics. Stairwells are located on both ends of the building, with the western stairwell coming directly into the lab. . Trained in electrical and mechanical engineering, Tai is a self-described electromechanical engineer who makes small gadgets that target the four major causes of blindness: cataracts, glaucoma, macular disease, and diabetic retinopathy. MC 104-44, Pasadena, CA 91125. These photomechanical couplings from micro- to macro-scale can be exploited in new material design as well as utilizing structure instabilities to generate cyclic motion. This combination of tools allows us to model and analyze complex, protocol-based control systems by using temporal logic to specify desired behavior, graph theory (in particular the graph Laplacian and other associated matrices) to model and design the information flow, graph grammars to design cooperative behavior, lattice theory and Lyapunov theory to understand convergence properties via invariant sets, and model-checking and receding horizon control to design systems whose asynchronous execution sequences satisfy a given specification. Like all graduate programs at Caltech, the program in Mechanical Engineering is small, highly selective, and research oriented. Thomas E. and Doris Everhart Professor of Control and Dynamical Systems and Bioengineering; William K. Bowes Jr. Professor Hunt focuses on the transport and mechanics of multiphase systems including granular and particulate flows, fluidized beds, porous media, and related energy systems. Richard Wall Lyman, former provost of Stanford University. To achieve these goals, her research takes advantage of nonlinearities in local material interactions (e.g., Hertzian contact interactions between particles or nonlinear interactions between nanostructures) to create novel systems and new materials with unprecedented global properties. As a first-year graduate student in mechanical engineering at Caltech, she developed an accessory for walking canes that vibrates to alert users when they may be in danger of falling. Space Technology. He is also an Associate Technical Editor forExperimental Mechanics, an international journal integrating experimental methods with the mechanical behavior of materials and structures. Learn more at the Seismic refraction experiments by Caltech ME proved the existence of a multi-layer internal structure in the dune that acts as a waveguide for the acoustic energy. Concept of surrogate model is used to speed up calculation process in order to achieve real-time decision-making. Dr. . Automated Decision-making System (ADS) is developed to make fast and rational decision based on the most updated EEWS information. We are developing robust and accurate numerical simulations of the interactions of shock waves with a disperse phase, and using the simulations to characterize the stresses occurring in nearby solid and fluid structures. Specific laboratory demonstrations include the ability to dynamically cancel lift fluctuations associated with gusting flows on a time scale approaching the fast, intrinsic fluid-dynamic time scales associated with small-scale wings. The faculty and students utilize their analytical skills . An elevator is available in the center of the building. (a) Microscale photomechanical coupling in nematic elastomers (Bai, Bhattacharya, JMPS, 2020): actuation, domain formation, and energy landscape. Bhattacharya and Ortiz groups have pursed an approach where they solve the equations of DFT on macroscopic domains by exploiting the structure of the solution to systematically eliminate degrees of freedom. It provides support for JOB: 3 Nov - Mechanical Engineer Caltech is a world-renowned science and engineering institute that marshals some of the world's brightest minds and most innovative tools to address fundamental scientific questions. For additional research fellowships and instructorships please consult the individual EAS Departmental websites. Combining statistical mechanics and continuum theory, photomechanical coupling is explored for photoactive nematic elastomers under both light illumination and mechanical stress. When classes are in session (such as ME 14 or ME 72), the lab will be occupied heavily by students from these classes. The DARPA Grand Challenges: A Caltech Perspective. Professor Colonius studies complex, multiscale flow phenomena and their control using theory, numerical experiments, and simulations. He also studies the behavior of granular materials like sand, snow, and even grain stored in silos. Setting GALCIT apart from others are our unrivaled experimental facilities in fluids, solids, materials, biomechanics, propulsion, and combustion; our exceptional faculty; our rigorous graduate student training; and our emphasis on the basics. Electrical engineering at Caltech emphasizes both devices and systems. 362 Gates-Thomas Laboratory (626) 395-4271 susta@caltech.edu Research Group Website Research Overview Prof. Daraio's research focuses on engineering new materials with advanced mechanical and sensing properties, for application in robotics, medical devices, and vibration absorption. Monica Kohler's academic scientific research in earthquake engineering and seismology takes advantage of recent rapid technological advances in sensor development to develop new . Medical Engineering. Using a combination of experimentation, computational models of the array and spinal cord, and machine-learning algorithms, Burdick and his colleagues are trying to optimize the stimulation pattern to achieve the best effects, and to improve the design of the electrode array. mechanical engineering - Germany / Find a Manufacturer producer in 'Munich, Nuremberg and Bavaria' that specialises in the 'mechanical engineering' field . Constructive interference between the reflecting waves enables the amplification and sets the frequency of each boom. Professor Pellegrino's research focuses on lightweight structures and particularly on problems involving packaging, deployment, shape control and stability. His research has particular applications to geologic and engineering infrastructure materials, as well as to the petroleum industry. Current research concerns three broad areas: (i) Active materials such as shape-memory alloys, ferroelectrics and liquid crystal elastomers, (ii) Heterogeneous materials and designing unprecedented properties by exploiting heterogeneities, (iii) Coarse-grained density functional theory to understand defects in solids. Micro implant devices included spinal neural stimulators, ECG implants, retinal prosthetic devices, intraocular lenses, etc. Turbulent buoyant helium plume. Mechanical Characterization of Cells and Biomaterials. . Dr. Kaul joined UNT in the Fall of 2017 . Earthquake Early Warning System (EEWS) only provides few seconds to a minute of early warning, which is not enough for human decision-making in many engineering applications. Division of Engineering & Applied Science, Department of Mechanical and Civil Engineering, One Step at a Time: A Conversation with Professor Ames. Our product portfolio ranges from a compact research system to 3D-printing systems for large-format production - their versatile capabilities deliver consistently and uncompromisingly high . Webpage Venkat Chandrasekaran Professor of Computing and Mathematical Sciences and Electrical Engineering Dislocations mediate plasticity, vacancies mediate creep, and grain boundaries affect dislocations and vacancy migration. You are drilled to understand natural phenomena in Thermodynamics, Fluids, and Structural Mechanics from a first principles point of view (think First Law, F = dp/dt, Conservation. Professor of Applied Physics, Aeronautics, and Mechanical Engineering. Example of thermo-diffusive instabilities. However, defects present a particularly daunting challenge since the (quantum) chemistry of the core, the atomistic halo and macroscopic (elastic) fields are intimately coupled. Special focus on earthquake early warning; understanding ground motions that cause building collapse; multi-scale self-organizing systems in dynamic rupture. Current projects include novel control system architectures, biomolecular feedback systems and networked control systems. He did his baccalaureate education in mechanical and aerospace engineering at the University of Utah. Professor of Mechanical Engineering and Applied Physics. Her current interests include clathrate and ice formation in porous media, hydrology, geologic carbon sequestration, and volcanic/geothermal systems. Joe Shepherd teaches and conducts research on fluid mechanics, solid mechanics, chemistry, thermodynamics, and structural mechanics with applications to explosion dynamics, industrial safety including aviation and nuclear power, high-speed flight and propulsion, fluid-structure interaction, energy conversion technologies, and medical devices. Chemical Engineering. The Mechanical Engineering program is currently ranked number four in the nation by the US News and World Report. To study these phenomena, a new experimental procedure has been setup in which a hot glow-plug is surrounded by a flammable hydrocarbon/air mixture. The Massachusetts Institute of Technology (MIT) is a private land-grant research university in Cambridge, Massachusetts.Established in 1861, MIT has since played a key role in the development of modern technology and science, ranking among the top academic institutions in the world.. Her work is applied to a wide range of geoscience problems in energy, resources and geohazards. PhD Student in Mechanical Engineering at Caltech Pasadena, California, United States. However, the bypass ratio is reaching a practical upper bound, and significant further reductions in jet noise will require more subtle interactions with the turbulent flow field and better understanding of the mechanisms of sound generation. Exploiting this understanding for the creation of new materials and devices for engineering applications ranging from optomechanics to shock absorption. Caltech is a world-renowned science and engineering institute that marshals some of the world's brightest minds and most innovative tools to address fundamental scientific questions. Preliminary results suggest that the puffing behavior in these premixed flames is a direct outcome of the interaction between buoyancy forces and vorticity generation near the flame front. Systems of current experimental interest include non-contact lithography of 3D micro-optical structures by patterned external fields; Marangoni wave phenomena and fractal wavefronts in biophysical systems; influence of layering transitions on slip behavior in nanoscale films; and optical wave propagation in structured polymeric waveguides. Professor Lapusta studies friction and fracture phenomena on both fundamental and practical levels. Professor Andrade's research focuses on developing a fundamental understanding of the multiscale and multiphysical behaviors of porous materialseverything from soils, rocks, and concrete to bone. Teaching Professor of Mechanical and Civil Engineering. George W. Housner Professor of Engineering and Applied Science, Emeritus. Professor of Civil Engineering and Applied Mechanics, Emeritus, Frank and Ora Lee Marble Professor of Aeronautics and Mechanical Engineering, Emeritus. CCE's top-ranked programs blend innovative coursework that requiresand teachescritical thinking with hands-on research and interdisciplinary collaborations that help . Defects play a critical role in determining the macroscopic properties of solids. 1200 E . The decision is based on a probabilistic estimation of economic loss using PEER performance-based earthquake engineering (PBEE) methodology. During the investigation of the dependence of hot surface ignition temperature on various parameters, such as pressure, equivalence ratio, and surface size, it was observed that periodic flames (puffing) develop at higher equivalence ratios. The goal of the system, is to stimulate the native standing and stepping control circuitry in the lower spinal cord so as to coordinate sensory-motor activity and partially replace the missing signals from the brain to the nerves. Experimental picture of a spherical flame in a bomb chamber (left). The course will focus on the implementations of sensor and actuator systems, the mechanical devices involved and the electrical circuits needed to interface with them. This facility has a clean-room (~3,000 sq. Division of Engineering & Applied Science, Department of Mechanical and Civil Engineering, Jim Hall Design & Prototyping Lab Website. Join us and be a part of the diverse Caltech community. Some 90 percent of Caltech undergraduates participate in research during their time here. John Dabiris research focuses on unsteady fluid mechanics and flow physics, with particular emphasis on topics relevant to biology, energy, and the environment. Theodore von Karman Professor of Aeronautics and Mechanical Engineering. This has been used to study vacancy binding in Aluminum and surface energies of Magnesium, and current work addresses dislocations in metals and domain walls in ferroelectric materials. The resulting acoustic emission is characterized by a dominant audible frequency (70 - 105 Hz) and several higher harmonics. Dotty and Dick Hayman Professor of Mechanical Engineering. Led a squad of four to synergize research done in-lab and remotely with weekly meetings He was also an NSF graduate research fellow studying human-robot interactions. Sample result of expected-AF (E[AF]) calculation based on PBEE methodology and earthquake magnitude estimation from EEWS (right). Studing the fundamental connections between structure and function in different physical domains (temperature sensitivity, electrical conductivity, etc.). Professor Greer focuses on nano-scale phenomena: mechanical properties, in-situ deformation, and nano-fabrication. Earle C. Anthony Professor of Geology and Mechanical and Civil Engineering; Associate Director, Center for Autonomous Systems and Technologies, My research aims mainly at understanding better earthquakes,crustal deformation, and geomorphic processes. Solid mechanics, dynamic mechanical properties, ballistic impact, hypervelocity impact of micrometeorites on spacecraft, dynamic fracture and fragmentation, adiabatic shear banding, mechanics of metallic glasses, mechanics of thin films, mechanics of geological materials, restoration of ancient stone monuments, earthquake fault mechanics, induced seismicity. Admission is preferentially granted to applicants who ultimately intend to pursue the Ph.D. degree. The methodology has so far been applied to study the collapse of cavitation bubbles near a kidney stone in lithotripsy, and the deformation of a target during a high-speed droplet impact. California Institute of Technology. Her work focuses on analytical and numerical modeling that incorporates and explains experimental findings. We offer graduate programs in Applied Mechanics, Civil Engineering and Mechanical Engineering. A key issue that is addresses is understanding the link between microstructure and macroscopic properties, and then using this understanding (i) to develop ideas for improved materials, (ii) to propose novel applications and (iii) to build high-fidelity macroscopic models. In the late eighties, Rosakis introduced the concept of "Laboratory Earthquakes" and since then his research interests have mainly focused on the mechanics of seismology, the physics of dynamic shear rupture and frictional sliding and on laboratory seismology. programs, and research. Wiki-site Both homogeneous and bimaterial interfaces (abutted by various elastic and damaged media) are investigated. Linda Darling-Hammond, education advisor to Barack Obama's presidential campaign. (b) Crystallization in photomechanical semi-crystalline polymers under light illumination (Bai, Bhattacharya, et al., in preparation). 08-24-21 A team led by the laboratory of Jose Andrade, George W. Housner Professor of Civil and Mechanical Engineering; Cecil and Sally Drinkward Leadership Chair, Department of Mechanical and Civil Engineering; Executive Officer for Mechanical and Civil Engineering, studied the digging habits of ants and uncovered the mechanisms guiding them. Calendar. The Bhattacharya group studies a wide range of active materials including shape-memory alloys, ferroelectrics, electro-active materials and liquid crystal elastomers. He teaches a broad range of undergraduate courses in Mechanical and Civil Engineering on subject areas which include Rigid Body Statics, Hydrostatics, Mechanics of Materials, Dynamics, CFD / FEA Modeling, Experimental Solid & Fluid Mechanics, and Engineering Design and Fabrication. All rights reserved. A recent research interest for Professor Rosakis is Hypervelocity Impact. Dark matter is a hypothetical form of matter thought to account for approximately 85% of the matter in the universe. Aaron Ames. The objective of the undergraduate program in Mechanical Engineering at Caltech is to produce graduates who will attain careers and higher education that ultimately lead to leadership roles in academia, industry and government in areas of rapidly advancing interdisciplinary technology related to fluid, solid, thermal and mechanical systems. Incoming graduate students come from the world's most prestigious universities and work one-on-one with a faculty mentor. . George W. Housner Professor of Civil and Mechanical Engineering. Due to their intrinsic nature, Rayleigh-Taylor instabilities are found in a large diversity of engineering applications and natural phenomena (inertial confinement fusion, furnaces, accidental fires, heat transfer within stars, supernova formation, underwater hot vents, oil spill). The combustion of hydrogen and high hydrogen content (HHC) fuels in real burners is controlled by complex interactions between chemical kinetics, molecular transport, and turbulence. Top view of separated flow over low aspect ratio wings of elliptical, semi-circular, and delta-shaped planform at Re=300 and 30 degrees angle of attack. He did his undergraduate in Mechanical Engineering at UNAM, Masters and PhD in Mechanical Engineering at Caltech, Postdoctoral training in Chemical Engineering at Cornell University, and then joined the faculty at UNAM in 1999. Centennial Professor of Aeronautics and Mechanical Engineering. See Taira and Colonius (Journal of Fluid Mechanics, 623:187-207, 2009) for further details. Caltech's 124-acre campus is located in Pasadena, California. The image shows parallel layering on either side of the dune crest; this layering structure is a key ingredient in the phenomena of booming dunes. The key aim of TRENT is to introduce tribology as an enabling technology in the engineering of intelligent systems for manufacturing and robotics. Mechanical and Civil Engineers shape our physical environment from the cities we live in, the machines we use, the way we travel, the energy that powers these to delivering the water we need. If a class is meeting in the lab for lecture or lab, the lab will be closed to all others until the class is over. These materials are composite systems in which typically basis elements that interact are arranged in well-defined geometries, such that the aggregate system as a whole exhibits properties that are not usually found in natural systems and can be exploited in engineering applications. for daily hours of operation, the lab is closed on weekends and holidays. Feedback? John Hall's research interests include earthquake engineering, structural engineering, structural dynamics, strong ground motion, finite element modeling, and earthquake reconnaissance. We are performing large-scale computations of turbulent jets and their radiated noise in order to provide detailed databases through which reduced-order modeling and control concepts can be evaluated. For the last few decades, battery research has largely focused on rechargeable lithium-ion batteries, which are used in everything from electric cars to portable electronics and have improved dramatically in terms of affordability and capacity. Thursday, March 31, 2022. As global leader in the sector of briquetting, over the years RUF has sold more than 5.000 briquetting machines in more than 100 countries. Our study has the potential to have significant impact across a number of . The microscopic information is further integrated to build a simple macroscopic modeling framework to study a series of examples. Action Function (AF) is defined such that mitigation action is taken when expected value of AF is greater than zero. Keys ideas include a reformulation of DFT in terms of local variables, efficient methods of solution and a nested discretization that resolves all details near the core but only samples representative points away from it. Of particular interest are small scale systems dominated by large surface forces due to patterned capillary, van der Waals, Maxwell, thermocapillary and Marangoni fields. Caltech is a world-renowned science and engineering institute that marshals some of the world's brightest minds and most innovative tools to address fundamental scientific questions. Division of Engineering & Applied Science, Quantum Mechanics at the Macroscopic Scale, Closed-loop Flow Control for Micro Air Vehicles, One Step at a Time: A Conversation with Aaron Ames, Department of Mechanical and Civil Engineering, Kaila Coimbra Receives AIAA David and Catherine Thompson Space Technology Scholarship, Mimicking Termites to Generate New Materials, Tweaking Turbine Angles Squeezes More Power Out of Wind Farms, Shaking in Our Seats: Earthquake Science on the Big Screen. Undergraduate Option; Graduate Option; ABET Accredited; Departments Degree Options; Aerospace (GALCIT) . All rights reserved. Spends most of his time watching professional squash matches . and ME 72 (Engineering Design Laboratory). We are working to develop a new class of feedback circuits that makes use of synthetic biological components to implement rapid response to input signals in a more robust and modular fashion. To date, only passive devices such as serrated nozzles have proven robust and effective enough for deployment on commercial aircraft, but recent advances in simulation and modeling promise new insights into mechanisms that can be exploited in active and, perhaps ultimately, closed-loop control. Our faculty collaborate with colleagues from Mechanical and Civil Engineering, Applied Physics and Materials Science, Computing and Mathematical Sciences, Bioengineering, Geology and Planetary Sciences, and JPL. Frank and Ora Lee Marble Professor of Mechanical Engineering and Medical Engineering; Cecil and Sally Drinkward Leadership Chair, Department of Mechanical and Civil Engineering; Executive Officer for Mechanical and Civil Engineering. Suryanarayana, Bhattacharya and Ortiz, In preparation. To approach the interlinked challenges of information flow, cooperative behavior and verification, we plan to combine tools and recent advances from control theory, networked systems and computer science. The methodology, so far demonstrated on model wings in laboratory and simulation environments, also delivers high-lift flow states that would be otherwise unstable without sensing and actuation. Our approach is to make use of biological processes that operate on timescales of seconds to minutes, primarily through feedback mechanisms using allosteric and covalent modifications that affect protein function. All rights reserved. More specifically, current state-of-the-art models are not capable of capturing satisfactorily the unique combustion characteristics of fuel-lean hydrogen/air or HHC-fuels/air mixtures under high pressures. Professor of Mechanical and Civil Engineering. California Institute of Technology. Roberto Zenit is the El Jefe (PI) of the lab. Block diagram of the proposed control architecture. This is Caltech Caltech Magazine Periodic Table of Caltech Innovation and Impact Exploration and Achievement . It combines a rigorous and fundamental coursework along with a number of options to undertake projects including the iconic Design Competition, Solar Decathlon, and research with faculty, JPL and industry. The present results may be the first evidence of a puffing premixed flame. Today, you will find students and faculty working on nanostructured fuel cells, study of earthquakes ranging from the source to their impact on buildings, active ferroelectric materials and devices, neural prosthetics, debris flows, response of structures against accidental explosion, water resources, efficient combustion processes, quantum mechanical origins of the strength of materials and design. Major. 2022 Caltech. MC 104-44, Pasadena, CA 91125. The high pressure thereby produced during can lead to significant structural damage to neighboring structures. Our research addresses fundamental issues that represent roadblocks in critical technologies towards engineering our physical environment.
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