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

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EB3 3122

August 2016

Engineering models to explain the origins of syringomyelia – Dr. Serge Cirovic

August 17, 2016 @ 1:30 pm

Seminar Serge Cirovic, The Centre for Biomedical Engineering, University of Surrey, Guildford, UK Engineering models to explain the origins of syringomyelia Syringomyelia is a severe progressive pathological condition in which fluid-filled cavities form and grow in the spinal cord at the expense of the normal nervous tissue. There is strong evidence that syringomyelia is linked to obstructions to the movement of cerebrospinal fluid (CSF), a clear water-like fluid that bathes the brain and the spinal cord. However, the exact mechanism…

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March 2017

MAE PhD Defense – Russell Mailen

March 22, 2017 @ 3:30 pm

Title: Computational Modeling of Shape Memory Polymer Origami that Responds to Light (Advisor:  Dr. Mohammed Zikry & Dr. Jan Genzer)    Abstract Shape memory polymers (SMPs) transform in response to external stimuli, such as infrared (IR) light. Although SMPs have many applications, this dissertation focuses primarily on their application as actuators in self-folding origami structures. Ink patterned on the surface of the SMP sheet efficiently absorbs thermal energy from the IR light, which produces localized heating. The material shrinks wherever…

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October 2017

MAE PhD Defense – Patrick Leser

October 27, 2017 @ 8:00 am - 10:00 am

TITLE: Probabilistic Prognostics and Health Management for Fatigue-critical Components using High-fidelity Models ADVISOR: Dr. Fuh-Gwo Yuan DATE & TIME: Friday, October 27, 2017 at 8am LOCATION: EB3 - 3122   ABSTRACT: The use of in situ health monitoring to calibrate predictive models can drastically reduce uncertainty when forming a prognosis of remaining useful life. For fatigue crack growth applications, this typically involves a Bayesian inference procedure that requires thousands to millions of model evaluations. Traditionally, prognostics and health management (PHM) approaches have…

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March 2018

SEMINAR: Mobility Robotics, An Integrated Assistive Robotics Approach to Address Mobility Challenges.

March 1, 2018 @ 10:00 am - 11:00 am

Abstract: With the aging of the U.S. population, there is an increasing number of individuals suffering from mobility impairment, including the persons with lower-limb amputations and frail older adults with lower-limb weaknesses. At the HUman-centered Bio-Robotics Laboratory (HUB-Robotics Lab) at The University of Alabama, our overarching objective is to create an integrated system of wearable robots (powered prostheses and orthoses) and legged/wheeled assistive robots to restore and/or enhance the mobility of such mobility-challenged individuals. To help the individuals suffering from…

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SEMINAR – Inks to Devices: Directed Assembly of Multiscale Functional Architectures

March 12, 2018 @ 10:00 am - 11:00 am

Abstract: The growing demand for customized three-dimensional (3D) functional materials is driven by myriad applications, including electronics, optics, sensors, and soft robotics. New advances in materials design, manufacturing, and multiscale architectures are needed to meet these demands. My talk will highlight a new paradigm, known as “inks to devices”, which involves transforming functional inks into tailored devices via additive manufacturing. First, I will describe printing of liquid metals for novel stretchable electronics and optical devices. Next, I will discuss the…

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Building Future Faculty feat. Dr. Atieh Moridi

March 15, 2018 @ 2:00 pm - 3:00 pm

Abstract: Materials by Design: Bottom-Up Manufacturing across Length Scales The ability to tailor local material architecture and composition enables us to create objects with properties that are not feasible by traditional manufacturing methods. In this talk, I will use three research projects to illustrate how advanced manufacturing and surface engineering can be used to create and modify local material properties. Additive manufacturing in particular enables the production of complex geometries, such as cellular solids, which I have used to create…

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SEMINAR: Advanced Printing Technologies and Materials

March 19, 2018 @ 10:00 am - 11:00 am

Abstract: This presentation contains two research proposals: the next generation additive manufacturing and the print-based nanomanufacturing exploiting unique characteristics of composite materials. As main application areas of those advanced manufacturing, fully printed multi-functional structures and in-situ tunable electromagnetic metamaterials will be proposed. In addition, impacts and challenges of the proposed research will be discussed. As the background of proposals, previous achievements on related topic areas, such as 3-D print material modeling, ink-jet printing and photonic sintering, plasmonic nanostructure design and…

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SEMINAR: Challenges and Consequences of Uncertainties in Metal Laser Powder Bed Fusion

March 21, 2018 @ 10:00 am - 11:00 am

Abstract: Additive manufacturing (AM) offers unprecedented opportunities to design complex geometries and optimized topologies for performance gains inaccessible under conventional manufacturing constraints. However, to facilitate adoption in high consequence applications, fundamental questions regarding the intrinsic reliability and repeatable performance of additive metals must be answered. Distinct from traditional subtractive processes, component geometry and material are formed concurrently in additive processes and preclude an a priori knowledge of material performance from feedstock properties. Of interest are powder bed fusion processes where…

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January 2019

SEMINAR: Synthetic Nervous Systems for Legged Robotics

January 31, 2019 @ 11:30 am - 12:30 pm

Abstract: Mobile robots have the potential to revolutionize fields as diverse as agriculture, emergency response, and extraplanetary exploration. Legged robots in particular could enable access to and transportation over previously inaccessible terrains. Legs are an inherently biological mobility solution, so it is reasonable to look to animals for inspiration. In particular, insects are highly-evolved walking machines. With the advent of optogenetics and other genetic tools for manipulating the nervous system, the opportunity for learning about nervous systems and applying that…

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February 2019

SEMINAR: Enabling Multifunctional Materials and Energy Systems

February 14, 2019 @ 10:00 am - 11:00 am

Abstract: I aim to enable the design and manufacturing of multifunctional materials and energy systems. Nature leverages multifunctionality in its energy-storage systems. For example, animals store energy as fat that provides insulation and shock absorption. In contrast, human-made energy-storage technologies are typically designed to perform only one function—to store and release energy. A multifunctional battery in an electric vehicle could reduce vehicle weight by replacing sections of the vehicle’s frame or exterior while providing impact absorption and vibration suppression. Wing…

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SEMINAR: Integrated Control of Cyber-Physical Infrastructure

February 21, 2019 @ 10:00 am - 11:00 am

Abstract: Cyber-physical systems, such as electricity, water, and transportation networks actuated by computing algorithms on data networks, compose the critical infrastructure underpinning our nation’s economy, security, and health. Current frameworks to operate the cyber-physical infrastructure are often decoupled across different timescales, objectives, and sectors and are often centralized, and therefore lack the responsiveness and flexibility to meet future needs for security, resilience, and efficiency, under emerging challenges including larger system scales, increased variations from renewables, sever cyber-physical threats, and complex…

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SEMINAR: A Finite Volume Model For Simulating the Unsteady Euler and Navier-Stokes Equations Under Realistic Conditions

February 22, 2019 @ 9:30 am - 10:30 am

Abstract: One of the most important goals of this research effort is to improve the efficiencies of computational fluid dynamic (CFD) tools by focusing on the development of a robust and accurate numerical framework. This framework must be capable of solving the Navier-Stokes Equations (NSE) under a wide variety of initial and boundary conditions. The new scheme was called the ‘Method of Consistent Averages’ (MCA). Later on, new capabilities were added and the scheme was renamed as the Integro-differential Scheme…

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SEMINAR: Quantifying the Qualitative: Defining and Evaluating Measures of Human Performance and Human-Machine Fluency

February 26, 2019 @ 10:00 am - 11:00 am

Abstract: In many domains, human motor performance is assessed visually by subject matter experts. However, there are scenarios where direct visual observation is not possible. In my research we enhance the ability to make decisions when the person is not observable (e.g., an astronaut in a spacesuit), the subject matter expert is not present (e.g., telehealth), the action is fast (e.g., military readiness), or there is a responsive system (e.g., exoskeletons) by enabling wearable sensors to quantify these qualitative assessments.…

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March 2019

SEMINAR: Integrating Human Performance in the Design Process

March 8, 2019 @ 10:00 am - 11:00 am

Abstract: The role of technology in safety-critical systems is to improve human and system performance. However, many systems do not comprehensively consider human needs (cognitive, physical, social) and human variability. The absence of human considerations in the design process can lead to avoidable use errors during technology interaction. Design decisions are often made without empirical evidence of its impact on human performance. To establish a safe and effective interaction between the human user and safety-critical systems, human factors principles must…

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April 2019

SEMINAR: Superomniphobic Surfaces: Design & Applications

April 15, 2019 @ 10:00 am - 11:00 am

Abstract: Recent years have seen significant advances in understanding super-repellent surfaces, i.e., surfaces with extreme repellency to liquids. Surfaces with extreme repellency to water are considered to be superhydrophobic. Surfaces with extreme repellency to virtually any liquid – aqueous or organic; Newtonian or non-Newtonian; with low or high viscosity; with low or high surface tension; acids, bases or solvents; monomers, oligomers or polymers etc. – are considered to be superomniphobic. In this presentation, I will discuss the fundamental physical and…

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May 2019

SEMINAR – Technical Developments of the Ultrasound

May 10, 2019 @ 10:00 am - 11:00 am

Abstract: The application of ultrasound imaging to the diagnosis and monitoring of the lung condition is nowadays receiving growing attention from both the clinical and technical world. The advantages of ultrasound are in fact numerous when compared to other imaging modalities like CT: availability at patients site, low cost, real time, safety. However, despite the vast amount of medical evidence showing how ultrasound can be used to gather diagnostic information, dedicated technical developments are still lacking. This leaves the clinicians…

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SEMINAR: Polymer Nanocomposites Technology Designed for Extreme Environments

May 24, 2019 @ 10:00 am - 11:00 am

Abstract: The introduction of inorganic nanomaterials as additives into polymers has resulted in polymer nanocomposites exhibiting a multiplicity of high-performance characteristics beyond what traditional polymeric composites possess. These “multifunctional” features attributable to polymer nanocomposites consist of improved properties, such as mechanical, thermal, flammability, ablation, electrical, optical, chemical, permeability, and others. Through control/alteration of the additives at the nanoscale level, one is able to maximize property enhancement of selected polymer systems to meet or exceed the requirements of current commercial, military,…

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June 2019

Screening and Tomographic Reconstruction of Defects by Structural Guided Ultrasonic Waves

June 13, 2019 @ 11:00 am - 12:00 pm

Detecting and quantifying damages in large structures is of growing interest in various industries. Conventional ultrasonic methods are tedious and expensive, especially for inaccessible areas. Ultrasonic structural guided wave offers an attractive alternative for the rapid inspection of defects from a remote position in a large structure. In this talk, two interesting applications of ultrasonic guide waves will be discussed: defect screening in structural features such as weld, stiffeners and bends, as well as defect characterization using guided wave tomographic…

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