EB3 3122 | Mechanical and Aerospace Engineering EB3 3122 | Mechanical and Aerospace Engineering

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EB3 3122

April 2017

Engineers in Industry- Networking and Career Panel

April 5, 2017 @ 5:30 pm - 7:00 pm

Networking Career Panel with engineering professionals. The intended audience is mechanical and aerospace engineering students. The goal is to give students insight into what it is like to be an engineering professional after college. Topics that will  be discussed by panelists include: Background (this would include graduation year, professional degrees, licenses, industry, and job transitions) Examples of how your course work in college prepared you for and applies to the work that you are doing now. Interesting Projects that you…

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Seminar – Villages, Power Plants, Ag Residue: Addressing Model Integration Challenges in Engineering Decision Making – Dr. Bryden

April 11, 2017 @ 10:15 am

Villages, Power Plants, Ag Residue: Addressing Model Integration Challenges in Engineering Decision Making Dr. Kenneth “Mark” Bryden Professor of Mechanical Engineering Program Director for Simulation, Modeling and Decision Science at the Ames Laboratory Iowa State University Group Website: https://www.ameslab.gov/smds ABSTRACT Villages in the developing world, clean power plants, and sustainable farms are all complex systems that need robust engineering decision-making tools. The challenge is that nearly all engineered products and processes are holistic complex systems composed of interdependent parts. Each of…

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Seminar – Corner Effects On Shock-Induced Separation – Professor Babinsky

April 27, 2017 @ 2:00 pm

Corner Effects on Shock-Induced Separation Holger Babinsky Professor of Aerodynamics Magdalene College University of Cambridge Group Website: http://www.magd.cam.ac.uk/ ABSTRACT The interaction of a shock wave with a turbulent boundary layer is one of the fundamental building blocks of compressible flow. It is particularly important to understand under what circumstances a shock wave causes flow separation. The most fundamental of all shock/boundary-layer interactions (SBLIs) is that of a normal shock with a flat plate boundary layer. Here, it was thought that the primary factor…

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January 2018

SEMINAR – Communications, Navigation, and Surveillance Systems in the National Airspace System – Status, Standards, and Plans

January 29, 2018 @ 11:30 am - 12:30 pm

Abstract: Communications, Navigation, and Surveillance (CNS) systems within the National Airspace System (NAS) have had a marked evolution over the last 25 years. The status of these systems, requirements for and issues with transition to new CNS Systems, and future CNS system plans in the context of the Federal Aviation Administration’s Next Generation Air Transportation System (NextGen) will be discussed. NASA’s UAS Traffic Management (UTM) system for the enablement of low-altitude civilian UAS operations has been in development for several…

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February 2018

SEMINAR – Electricity in the Air: Lab-Scale Flight Characterization and Optimal Control Strategies for Airborne Wind Energy Systems

February 27, 2018 @ 10:00 am - 11:00 am

Abstract: Airborne wind energy (AWE) systems, which replace conventional towers with tethers and lifting bodies, have the potential to unlock vast amounts of untapped energy at altitudes unreachable by towers. The AWE community has made great strides since the publication of initial seminal papers in the 1980s, moving from paper to prototype as dozens of organizations have deployed systems in the field over the past several years. Nevertheless, two very important dynamics and control-related challenges remain: (i) efficiently and inexpensively…

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March 2018

SEMINAR: Additive Manufacturing Processes Across Length Scales for Future Wearable and Implantable Devices

March 22, 2018 @ 10:00 am - 11:00 am

Abstract: Additive manufacturing could significantly enhance wearable and implantable devices by better mimicking the complexity and diversity of human bodies, yet improved processes and materials are needed to realize this potential. I will discuss two novel additive techniques where molecular and macroscale material properties are engineered to enhance product mechanics and enable new devices. 1) I will describe the first method for additive manufacturing of full-density cellulose objects, which is made possible by reversibly modifying the cellulose molecule. These printed…

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SEMINAR: Driven Motion Planning for Unmanned Vehicles

March 27, 2018 @ 10:00 am - 11:00 am

Abstract: The ability of unmanned vehicles to plan and execute motions under nominal conditions has been critical to their success over the past decade. However, the ambitious applications envisioned for future vehicles will require an even greater degree of efficiency and autonomy to be achieved by motion planning and control algorithms. Optimal control theory provides a powerful tool to synthesize and study the properties of trajectories for vehicles with nonlinear motion models. The first part of this talk discusses the…

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April 2018

SEMINAR: Planning, control, and decision-making ofagile humanoid robots in complex environments

April 2, 2018 @ 10:00 am - 11:00 am

Abstract: Our century greatly needs autonomous, agile, and human-centered robots that are able to operate in human-populated environments, maneuver in remote and cluttered environments, take care of our health, and streamline manufacturing and assembly lines. However, computational issues limit robots’ ability to plan complex motions in constrained and contact-rich environments, interact with humans safely, and exploit dynamics to gracefully maneuver, manipulate, fly, or explore the oceans. My talk will discuss new computational approaches necessary to enable agile and human-centered robots…

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SEMINAR: On-Chip Materials Processing and Cell Characterization

April 4, 2018 @ 10:00 am - 11:00 am

Abstract: Micro/nanoscale technologies are emerging as powerful tools for controlling the interaction between cells and their surroundings for biological studies and biomedical applications. I will discuss two areas of research in our lab. Fibers have been increasingly used in various biomedical applications since they provide cells with a hydrated 3D microenvironment that mimics the native extracellular matrix. We have employed hydrodynamic focusing and solvent extraction to fabricate highly-structured biocompatible and biodegradable polymer microfibers in a microfluidic platform. The microfibers are…

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May 2018

SEMINAR – Advanced Manufacturing of Multifunctional Ceramic Materials

May 2, 2018 @ 10:00 am

Abstract: Ceramic materials with unique properties such as chemical stability, oxidation and corrosion resistance, have been used widely in extreme environment applications, such as hypersonic vehicles, turbine engines, power plants, nuclear reactors, etc. One of my recently funded Army Research Office (ARO) projects is to study the effect of processing condition (e.g., 1000oC-2000oC) of SiC ceramic material on its microstructure, chemical composition, and electrical/dielectric properties (e.g., DC/AC conductivity, bandgap, permittivity, and loss tangent). One of the unique features of the…

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SEMINAR – Past, Present, and Future of Alternative Current Poling for Piezoelectric Materials

May 11, 2018 @ 10:00 am - 11:00 am

Abstract: Alternative Current Poling (ACP) process for bulk piezoelectric materials was first reported by Ogawa Toshio of Shizuoka Science University, Japan in 2003 (Jpn Patent Publication 2003-282936). The material was Lead Zinc Niobate Titanate (PZN-9PT) single crystal (SC). After the first report, Hanue of Konica Minolta MG Co. Japan reported ACP effect for 3-0 composite of organic materials, such as PVDF and Pb free inorganic materials of CaBi4Ti4O15 (Jpn Patent Publication 2008-47693). However, both of them could not show a…

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December 2018

NC-ASA Fall Meeting

December 7, 2018 @ 9:00 am - 12:00 pm

The NC-ASA meeting provides students and professionals with an opportunity to come together and attend various events to learn about the latest happenings in the different fields related to acoustics! The Fall 2018 meeting would comprise of multiple seminars with speakers from academia as well as the industry. Directions to Centennial Campus, North Carolina State University and Parking information: https://centennial.ncsu.edu/centennial-3d-map.php Schedule on December 7th: 9am - 10am : Breakfast and Social Networking We have reserved this time for guests to…

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January 2019

SEMINAR: Update on Refrigerants – Past, Present, and Future

January 9, 2019 @ 12:00 pm - 1:00 pm

Abstract: In recent decades, the refrigeration and air conditioning sciences have been in a state of flux primarily because of the phase-out of ozone-depleting CFC and HCFC refrigerants, and secondarily because of environmental concerns related to the direct global warming impacts of some of the replacement refrigerants. Due to these concerns, there is significant worldwide interest in using substances that are naturally occurring in the biosphere as refrigerants, which are considered benign to the environment and are termed “natural working…

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SEMINAR: Far-Field Optical Nanothermometry via Individual Luminescent Nanoparticles

January 29, 2019 @ 10:00 am - 11:15 am

Abstract: From transistors to LEDs, as device length scales trend downward, poor thermal dissipation increasingly leads to nanoscale hotspots that limit performance. To address this challenge, nanoscale thermometry tools must be developed. Conventional far-field optical methods like thermoreflectance provide a convenient non-contact approach, but these techniques are fundamentally diffraction limited. To circumvent the optical diffraction limit, I employ the temperature-dependent luminescence of lanthanide-doped upconverting nanoparticles to achieve sub-50 nm single-point temperature measurements. Single-particle measurements typically require excitation intensities orders of…

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February 2019

SEMINAR: Leveraging Structural Elasticity and Instability for High-Performance Soft Machines

February 5, 2019 @ 10:00 am - 11:00 am

Abstract: Soft robotics is becoming an emerging frontier in scientific research and engineering innovation due to its safe and adaptive interaction with human and environment. Compared to rigid links in traditional rigid robots, soft robots are often made of highly deformable soft materials, thus allowing extreme compliance, endurability, elasticity, and theoretically infinite number of degrees of freedom, which are not possessed by rigid robots. However, soft robots often exert small force and exhibit slow response due to the compliance of…

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SEMINAR: Multiscale Medical Robotic Systems for Advanced Healthcare

February 12, 2019 @ 10:00 am - 11:00 am

Abstract: Advances in biology and medicine require enabling technologies for manipulation and characterization of tissues, single cells, and even sub-cellular structures. The past decade has witnessed a significant progress in the area of micro-robotics for biomedical applications such as single cell manipulation and minimally invasive surgery. In robotic manipulation at small scales, two long-lasting technical challenges existed: (1) how to search and locate small and fragile end-effector tips and (2) how to determine the third dimensional information (i.e. Z positions)…

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SEMINAR: Photons as Energy and Fuel- Harnessing Nanoscale Light-Matter Interactions in Terrestrial and Space Domains

February 19, 2019 @ 10:00 am - 11:00 am

Abstract: The diverse range of available thermodynamic resources—from the Sun at 6,000 degrees to cold space at 3 degrees—offers great potential for energy and environmental applications. To harness these resources, the ability to control radiative energy processes is of vital importance. In the first part of my talk, I will discuss how nanoscale photonic structures and two-dimensional material platforms can manipulate thermal electromagnetic fields in unprecedented ways. I will present the work on tailoring thermal emission by photonic elements that…

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SEMINAR: Art, Craft, and Philosophy of Science

February 27, 2019 @ 2:00 pm - 3:00 pm

Abstract: Before one can develop an adequate theory to describe natural phenomena, it is imperative to understand the underpinnings of natural philosophy in particular and philosophy in general, have great facility with the natural language for its expression: mathematics. But this alone is insufficient; one needs to understand the interplay between science, language, psychology, philosophy, politics, economics, and societal demands amongst many other subjects, as they all have an impact on the path science takes. One is interested in the…

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March 2019

SEMINAR: Multi-Scale Computational Models for Predicting Fatigue Crack Nucleation in Metallic Materials

March 1, 2019 @ 10:00 am - 11:00 am

Abstract: Structural components are often subjected to cyclic loading and their fluctuations in service conditions. This results in their time-dependent fatigue failure. Fatigue in structural materials has been a topic of interest to researchers for decades. However, with the advent of recent research initiatives like the Integrated Computational Materials Engineering (ICME), research in this field has taken an exciting new dimension. By coupling sophisticated tools of Computational Mechanics and Computational Materials Science, these initiatives are enabling computational models to probe…

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SEMINAR: Wearable Smart Interfaces as a Pervasive Energy Solution for the Internet of Things

March 5, 2019 @ 10:00 am - 11:00 am

Abstract: Energy crises and global warming severely limit the ability of human civilization to develop along a sustainable path. Increasing renewable energy sources and decreasing energy consumption are fundamental steps to achieve sustainability. By using remotely deployed sensors, the Internet of Things (IoT) has already changed our daily life in fundamental and meaningful ways. In the meanwhile, it is also forcing the world to use a new form of energy to sustainably power billions of devices/sensors. The required energy source…

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April 2019

SEMINAR: Control of light and heat for new energy applications

April 22, 2019 @ 10:00 am - 11:00 am

Abstract: Light carries energy and heat, and plays a key role in many energy conversion processes. The strong interaction between light and matter in nanostructures provides new ways for tailoring thermal radiation, and represents important opportunities for novel energy applications and advanced thermal control. In this seminar I will present two sets of studies integrating experiment and theory. Firstly, I will discuss how near-field radiative heat transfer enables novel energy conversion and active refrigeration. I will show an experiment achieving…

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September 2019

SEMINAR: Additive Manufacturing Processes for Ceramics and Glass

September 4, 2019 @ 10:00 am - 11:00 am

Abstract Additive Manufacturing (AM), which has been referred to as the 4th revolution in manufacturing, is a truly disruptive class of manufacturing. In AM, location-specific mechanical properties can be tailored by grading materials and microstructure, complex geometries that cannot be manufactured with traditional processes can be fabricated, and cost-effective part repair and low volume manufacturing can be realized. However, AM processes have tremendous variability and are not well understood. This has led to significant research efforts into controlling these processes.…

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November 2019

SEMINAR: Ceramic Matrix Composite (CMC) Thermal Protection Systems (TPS) and Hot Structures for Hypersonic Vehicles

November 8, 2019 @ 1:00 pm - 2:00 pm

Abstract Thermal protection systems (TPS) and hot structures are required for a range of hypersonic vehicles ranging from ballistic re-entry to hypersonic cruise vehicles, both within Earth’s atmosphere and non-Earth atmospheres.  This presentation will begin with a brief discussion of aerodynamic heating and thermal management techniques to address the high heating of hypersonic flight, followed by an overview of TPS for rocket-launched and air-breathing vehicles.  The primary portion of the paper will discuss issues and design options for ceramic matrix…

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December 2019

SEMINAR: Smart and Connected Soft Bioelectronics for Advancing Human Healthcare and Human-Machine Interfaces

December 13, 2019 @ 10:00 am - 11:00 am

Abstract: Dr. Yeo has established a strong research program in the field of nanoengineered human-machine electronic interfaces. The goal of Dr. Yeo’s research is to understand fundamentals of soft materials, deformable mechanics, biological interface forces, and nanomanufacturing methods for development of stretchable hybrid biosensors and bioelectronics. The comprehensive study of mechanics, materials, and manufacturing for biosystems aims to advance human healthcare, disease diagnostics, therapeutics, and human-machine interaction.  In this talk, he will discuss about recent research works on soft, smart…

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January 2020

SPECIAL SEMINAR: Navigating the Next Generation of Exploration Spacecraft with John Christian, Rensselaer Polytechnic Institute

January 28 @ 4:15 pm - 5:00 pm

Abstract: Contemporary deep space navigation is still performed using techniques pioneered over fifty years ago. Robotic exploration spacecraft are largely controlled by Earth-based operators, with sensor data being downlinked and interpreted by analysts before commands are sent back to the spacecraft. This paradigm lies in stark contrast to the push towards autonomy seen in many terrestrial applications, such as self-driving cars and industrial robotics. In this seminar we will reimagine how spacecraft navigate in a way that might enable access…

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SPECIAL SEMINAR: Micro-Propulsion Systems for the Next Generation Space Missions

January 30 @ 4:15 pm - 5:00 pm

Abstract: Many miniaturized satellites have recently been launched and proved the feasibility of distributed space systems in space missions with improved revisit time, the time elapsed between observations by satellites, at an extremely low cost. Most preliminary small-scale satellites such as CubeSat and PocketQube, however, were either not equipped with a micro-propulsion system for its altitude/orbit control or not ready for various space missions due to inherent theoretical performance limitations of space propulsion systems that currently exist as well as…

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SEMINAR: Towards Hybrid Intelligence for Systems Design

January 31 @ 10:00 am - 11:00 am

Abstract: Engineers have access to unprecedented information regarding the systems they create, analyze, and develop. This information is available from a number of emerging sources including digital twin simulations, embedded sensors, and consumer feedback platforms. In this talk, I discuss our recent efforts in converting information about the operation, use, and perception of systems into design intelligence to enable improved reasoning in the development of engineered solutions. The design of smart products, rescue drone swarms, and additive manufacturing recommender systems…

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February 2020

SPECIAL SEMINAR: Development of a Multimode Chemical-Electric Propulsion System for Small Satellites

February 4 @ 4:15 pm - 5:00 pm

Abstract: Multimode propulsion is the integration of two or more propulsive modes into a single spacecraft propulsion system. The key attribute is shared propellant between the different propulsive modes, which could include both high-thrust chemical and high-specific impulse electric thrusters. Multimode propulsion is emerging as an enabling technology that promises enhanced capabilities for spacecraft and space missions and can therefore play an important role in the future of in-space propulsion. Specifically, multimode propulsion has potential to provide unprecedented flexibility, adaptability,…

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SPECIAL SEMINAR: Influences of Noise and Nonlinearity on Dynamic Systems

February 6 @ 4:15 pm - 5:00 pm

Abstract: All physical systems have sources of nonlinearity and stochasticity. When modeling these systems, these attributes are often ignored, as they add significant complexity. Although separately noise and nonlinearity are often problematic, there are some situations where noise and nonlinearity can synergistically enhance the dynamic response of a system. In this talk, several topics concerning vibrations, stochastic dynamics, and nonlinear dynamics will be discussed: 1) the effects of noise on nonlinear oscillators, 2) adaptive oscillators with plastic states, 3) vibratory…

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SPECIAL SEMINAR: Remote Sensing from Space: Filling Gaps with Enabling Technologies

February 11 @ 4:15 pm - 5:00 pm

Abstract: Space-based remote sensing, as applied to the Earth and its atmosphere, has played a crucial role in the advances in oceanography and meteorology. There are a few issues to be addressed, however, for enhanced sustainability and capability of remote sensing missions. First, satellite constellations for Earth observation have been launched in a rather simple or ad-hoc style, lacking deployment strategies to reduce costs and increase returns. Second, the target of remote sensing has mostly been the Earth. Third, there…

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SEMINAR: Product Design in the Face of Complexity and Sustainability Challenges

February 13 @ 11:00 am - 12:00 pm

Abstract: Successful and sustainable product design relies on a combination of strong technical, managerial, and market performance. This is particularly challenging when the design context is complex, such as where there are multi-stakeholder interests, sustainability considerations (environmental, social, and economic), or multidisciplinary engineering analyses. To produce truly optimal solutions, designers must understand these factors and how they influence product success, which requires a suite of modeling and simulation tools from multiple academic fields, including different engineering specialties, psychology, economics, and…

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