Engineering Commons^™

An Example Of Thermoset – Silicone, Csilla Kollar

Single-Use Technologies III: Scientific and Technological Advancements

Abstract is not available.

Mixing Operations For 50 L To 2000 L Single-Use Mixer: Liquid-Liquid Mixing Characterization And Slurry Suspension, Jordan Cobia, Kevin Mullen, Becky Staerk

Single-Use Technologies III: Scientific and Technological Advancements

Mixers are employed throughout all parts of bioprocessing. Single-use mixers (S.U.M.) are commonly used for upstream operations including media formulation and hydration, media holding, sterile filtration and downstream operations including media and product storage, viral inactivation, buffer preparation, and resin/slurry preparation for column packing. This study presents the automation of both simple and complex mixing procedures using the Thermo Fisher Touchscreen Control Panel. Also investigated are the selection method for scalable mixing parameters allowing normalized mixing performance across all single use mixer sizes. The following applications are demonstrated in this study:

• Characterization of scalable mixing parameters by comparing power input …

Process Intensification In Biomanufacturing Driven By Advances In Single Use Technologies, Stefan Schmidt

Single-Use Technologies III: Scientific and Technological Advancements

Single use technologies now represent the state of the art in biomanufacturing, but still the full potential of a broad application has not been tapped yet. One strategy that captures most of disposable benefits is process intensification. Here single use systems are optimized to achieve similar output levels as traditional stainless-steel facilities but at much lower capital expenditure, smaller footprints and faster implementation times. This presentation gives an overview on current approaches, describes the opportunities and limits of disposables and delivers recommendations to what should be done by suppliers and users in the near future.

Conference Program, Weibing Ding, Martina Micheletti, Robert Repetto

Single-Use Technologies III: Scientific and Technological Advancements

No abstract provided.

Single Use Plastic Settlers For Clarifying Cell Culture Broth, Selective Removal Of Dead Cells And Affinity Capture Of Antibodies On Protein A Beads, Dhinakar Kompala, Mark Harris, Christopher Glascock, Premsingh Samuel

Single-Use Technologies III: Scientific and Technological Advancements

We have redesigned the successful “inclined settler” technology used as a selective cell retention device in mammalian cell perfusion bioreactor cultures into a more compact and easily scalable design using cylindrical and conical geometries. Through this novel settler design, we have achieved 6 – 10 x more settling area for the same footprint, compared to the traditional multi-plate or lamellar rectilinear scale up design. Using this compact settler design, we have demonstrated significant clarification of the smaller yeast Pichia pastoris cells in continuous harvest or settler effluent stream and high cell densities (700 – 1000 O.D.) in perfusion bioreactors operated …

Tuflux Tpe Tubing For Pharma Processing, Pradnya Parulekar, Michael Drechsel

Single-Use Technologies III: Scientific and Technological Advancements

The guidelines for launching new products and manufacturing those approved products are becoming more stringent on a routine basis. Quality certifications, clean room requirements, forwards and backwards traceability on all components are the new standard for providing FDA-approve products. Part of insuring that quality criteria are being met is to understand how the raw material is created, how it is processed in to a technologically useful processing aid (tube) and then how is that tube tested. Thermoplastic resin is the key ingredient in creating TuFlux tubing. The broad chemistry footprint allows specialized compounders to create unique blends of components (using …

Map Based Discovery Of Hydrologic Data In The Hydroshare Collaboration Environment, Zhaokun Xue, Alva Couch, David G. Tarboton

Civil and Environmental Engineering Faculty Publications

Data discovery refers to the process of locating pre-existing data for use in new research. In the HydroShare collaboration environment for water science, there are more than twenty kinds of data that can be discovered, including data from specific sites on the globe, data corresponding to regions on the globe, and data with no geospatial meaning, such as laboratory experiment results. This paper discusses lessons learned in building a data discovery system for HydroShare. This was a surprisingly difficult problem; default behaviors of software components were unacceptable, use cases suggested conflicting approaches, and crafting a geographic view of a large …

Critical Theoretical Frameworks In Engineering Education: An Anti-Deficit And Liberative Approach, Joel A. Mejia, Renata A. Revelo, Idalis Villanueva, Janice Mejia

Engineering Education Faculty Publications

The field of engineering education has adapted different theoretical frameworks from a wide range of disciplines to explore issues of education, diversity, and inclusion among others. The number of theoretical frameworks that explore these issues using a critical perspective has been increasing in the past few years. In this review of the literature, we present an analysis that draws from Freire’s principles of critical andragogy and pedagogy. Using a set of inclusion criteria, we selected 33 research articles that used critical theoretical frameworks as part of our systematic review of the literature. We argue that critical theoretical frameworks are necessary …

“There Is Never A Break”: The Hidden Curriculum Of Professionalization For Engineering Faculty, Idalis Villanueva, Taya Carothers, Marialuisa Di Stefano, Md. Tarique Hasan Kahan

Engineering Education Faculty Publications

The purpose of this exploratory special issue study was to understand the hidden curriculum (HC), or the unwritten, unofficial, or unintended lessons, around the professionalization of engineering faculty across institutions of higher education. Additionally, how engineering faculty connected the role of HC awareness, emotions, self-efficacy, and self-advocacy concepts was studied. A mixed-method survey was disseminated to 55 engineering faculties across 54 institutions of higher education in the United States. Quantitative questions, which centered around the influences that gender, race, faculty rank, and institutional type played in participants’ responses was analyzed using a combination of decision tree analysis with chi-square and …

Physical Modeling Of Flow Nets In Groundwater And Determination Of Hydraulic Conductivity, Hannah Nicholas, Moses Karakouzian

AANAPISI Poster Presentations

The goal of this study is to physically model the paths that water particles take through soil, and estimate hydraulic conductivity for several soil configurations. Water paths, or flow lines, are shown by injecting dye into sand contained in a rectangular acrylic glass tank with a vertical barrier in the center; water is poured on one side of the tank and a pump is used to maintain constant head loss. If flow lines are formed, a flow net is to be drawn using photos of the tank and hydraulic conductivity is to be calculated.

This project consists of four phases: …

Coir Fiber Reinforced Concrete, Jose De La Serna, Moses Karakouzian

AANAPISI Poster Presentations

This poster exhibits the testing and research done on general Portland Cement Concrete with the addition of coir (coconut) fibers as reinforcement. Using the fundamental constituents of cement (water, cement, fine and coarse aggregate) and processed coir fiber, concrete specimens were batched to test for compressive and flexural strengths (per appropriate ASTM standards). Cylindrical and rectangular beam specimens were subjected to loadings until failure occurred. The capacity and modes of failures of the specimens were observed. It was determined that:

• The addition of processed coir fibers decreases the overall strength of general Portland Cement Concrete. • The tested concrete’s …

Simulation Of The Oxygen Reduction Reaction (Orr) Inside The Cathode Catalyst Layer (Ccl) Of Proton Exchange Membrane Fuel Cells Using The Kinetic Monte Carlo Method, Baosheng Bai, Yi-Tung Chen

Mechanical Engineering Faculty Research

In this paper, a numerical model of the kinetic Monte Carlo (KMC) method has been developed to study the oxygen reduction reaction (ORR) that occurs inside the cathode catalyst layer (CCL). Firstly, a 3-D model of the CCL that consists of Pt and carbon spheres is built using the sphere packing method; secondly, an efficient procedure of the proton-oxygen reaction process is developed and simulated. In the proton-oxygen reaction process, all of the continuous movements of protons and oxygen are considered. The maximum reaction distance is determined to be 8 Å. The input pressures of protons and oxygen are represented …

Modelling, Design, And Optimization Of Membrane Based Heat Exchangers For Low-Grade Heat And Water Recovery, Soheil Soleimanikutanaei

FIU Electronic Theses and Dissertations

Transport Membrane Condenser (TMC) is an innovative technology based on the property of a nano-scale porous material which can extract both waste heat and water from exhaust gases. This technology tremendously improves the efficiency of boilers and gas/coal combustors by lowering waste heat and increasing water recovery. Contaminants in the flue gases, such as CO2, O2, NOx, and SO2 are inhibited from passing through the membrane by the membrane’s high selectivity. The condensed water through these tubes is highly pure and can be used as the makeup water for many industrial applications. The goal of this research is to investigate …

Toward Autonomous Wall-Climbing Robots For Inspection Of Concrete Bridges And Tunnels, Jizhong Xiao

INSPIRE Archived Webinars

In addition to visual inspection for surface flaws, inspectors are often required to detect subsurface defects (e.g., delamination and voids) using nondestructive evaluation (NDE) instruments, such as ground penetration radar (GPR) and impact sounding device, in order to determine the structural integrity of bridges and tunnels. In these cases, access to critical locations for reliable and safe inspections is a challenge.

Since 2002, Dr. Jizhong Xiao’s group has developed four generations of wall-climbing robots for NDE inspection of bridges and tunnels. These robots combine the advantages of aerodynamic attraction and suction to achieve a desirable balance of strong adhesion and …

Deep Rc: Enabling Remote Control Through Deep Learning, Jaron Ellingson, Gary Ellingson, Tim Mclain

Student Works

Human remote-control (RC) pilots have the ability to perceive the position and orientation of an aircraft using only third-person-perspective visual sensing. While novice pilots often struggle when learning to control RC aircraft, they can sense the orientation of the aircraft with relative ease. In this paper, we hypothesize and demonstrate that deep learning methods can be used to mimic the human ability to perceive the orientation of an aircraft from monocular imagery.

This work uses a neural network to directly sense the aircraft attitude. The network is combined with more conventional image processing methods for visual tracking of the aircraft. …

Wireless Sensor Networks For Long-Term Monitoring Of Urban Noise, Courtney Peckens, Cédric Porter, Taylor Rink

Faculty Publications

Noise pollution in urban environments is becoming increasingly common and it has potential to negatively impact people’s health and decrease overall productivity. In order to alleviate these effects, it is important to better quantify noise patterns and levels through data collection and analysis. Wireless sensor networks offer a method for achieving this with a higher level of granularity than traditional handheld devices. In this study, a wireless sensing unit (WSU) was developed that possesses the same functionality as a handheld sound level meter. The WSU is comprised of a microcontroller unit that enables on-board computations, a wireless transceiver that uses …

Approaches To Open Source 3-D Printable Probe Positioners And Micromanipulators For Probe Stations, Iiro Hietanen, Ismo T. S. Heikkinen, Hele Savin, Joshua M. Pearce

Department of Materials Science and Engineering Publications

Three types of highly-customizable open source probe positioning systems are evaluated: (a) mostly 3-D printed, (b) partially printed using OpenBeam kinematic constraints, and (c) a 3-level stack of low-cost commercial single axis micropositioners and some printed parts. All systems use digital distributed manufacturing to enable bespoke features, which can be fabricated with RepRap-class 3-D printer and easily accessible components. They are all flexible in material choice for custom components. The micropositioners can be set up for left-right use and flat or recessed configurations using either mechanical or magnetic mounting. All systems use a manual probe holder that can be customized …

Cubesat Active Thermal Management In Support Of Cooled Electro-Optical Instrumentation For Advanced Atmospheric Observing Missions, Lucas Anderson, Charles Swenson, Ryan Davidson, Arthur J. Mastropietro, Elham Maghsoudi, S. Luong, Stefano Cappucci, I. Mckinley

Electrical and Computer Engineering Faculty Publications

The need for advanced cooled electro-optical instrumentation in remote observations of the atmosphere is well known and demonstrated by SABER on the TIMED mission. The relatively new use of small satellites in remote earth observing missions as, well as the challenges, are epitomized by the upcoming NOAA EON-IR 12U CubeSat missions. These advanced CubeSat missions, which hope to accomplish scientific objectives on the same scale as larger more traditional satellites, require advanced miniaturized cryocoolers and active methods for thermal management and power control. The active CryoCubeSat project (ACCS) is a demonstration of such a technology. Utilizing Ultrasonic Additive Manufacturing (UAM) …

Domain-Specific Use Cases For Knowledge-Enabled Social Media Analysis, Soon Jye Kho, Swati Padhee, Goonmeet Bajaj, Krishnaprasad Thirunarayan, Amit Sheth

Publications

No abstract provided.

Nonlocal Damage Mechanics For Quantification Of Health For Piezoelectric Sensor, Amit Shelke, Anowarul Habib, Umar Amjad, Ullrich Pietsch, Sourav Banerjee

Faculty Publications

In this paper, a novel method to quantify the incubation of damage on piezoelectric crystal is presented. An intrinsic length scale parameter obtained from nonlocal field theory is used as a novel measure for quantification of damage precursor. Features such as amplitude decay, attenuation, frequency shifts and higher harmonics of guided waves are commonly-used damage features. Quantification of the precursors to damage by considering the mentioned features in a single framework is a difficult proposition. Therefore, a nonlocal field theory is formulated and a nonlocal damage index is proposed. The underlying idea of the paper is that inception of the …

Reducing Exposures Traffic-Related Air Pollution And Urban Building Design, Elliott T. Gall, Linda George

Mechanical and Materials Engineering Faculty Publications and Presentations

No abstract provided.

Cysteine As An Eco-Friendly Corrosion Inhibitor, Hany A. Elazab Dr

Chemical Engineering

In this paper, the aim was finding the most efficient corrosion inhibitor for mild steel placed in a 0.5M Sulfuric acid. The comparison was implemented between Cysteine (an eco-friendly corrosion inhibitor) and 4 different Ions-Cysteine Inhibitors (Copper- Cysteine, Nickel-Cysteine, Iron-Cysteine, and Cobalt-Cysteine). The solutions were prepared and evaluated while placed with a working electrode of mild steel with a copper rod attached to its end. To determine the best eco-friendly corrosion inhibitors two experiments were implemented: Electrochemical Impedance Spectra, and Linear Polarization. By the end of the experiment it was found that Copper- Cysteine was the most efficient eco-friendly corrosion …

The Flow Reactor Technology As A Modern Synthetic Tool For Preparation Of Pd/Fe3o4 Nanoparticles As A High Efficient Magnetic Catalyst For Co Oxidation, Hany A. Elazab

Chemical Engineering

No abstract provided.

16-06 Vehicle-To-Device (V2d) Communications: Readiness Of The Technology And Potential Applications For People With Disability, Ala Al-Fuqaha, Jun-Seok Oh, Valerian Kwigizile

Transportation Research Center Reports

IEEE 802.11p was developed as an amendment to IEEE 802.11 for wireless access in vehicular environments (WAVE). While WAVE is considered the de facto standard for V2V communications, in the past few years a number of communications technologies have emerged that enable direct device-to-device (D2D) communications. Technologies like Bluetooth Smart, WiFi-Direct and LTE-Direct allow devices to communicate directly without having to rely on existing communications infrastructure (e.g., base stations). More importantly, these technologies are quickly penetrating the smartphones market.

The goal of this research is to conduct extensive simulation and experimental studies to assess the efficacies of utilizing D2D communications …

Tourism Review Sentiment Classification Using A Bidirectional Recurrent Neural Network With An Attention Mechanism And Topic-Enriched Word Vectors, Qin Li, Shaobo Li, Jie Hu, Sen Zhang, Jianjun Hu

Faculty Publications

Sentiment analysis of online tourist reviews is playing an increasingly important role in tourism. Accurately capturing the attitudes of tourists regarding different aspects of the scenic sites or the overall polarity of their online reviews is key to tourism analysis and application. However, the performances of current document sentiment analysis methods are not satisfactory as they either neglect the topics of the document or do not consider that not all words contribute equally to the meaning of the text. In this work, we propose a bidirectional gated recurrent unit neural network model (BiGRULA) for sentiment analysis by combining a topic …

Rheological Performance Of Bio-Char Modified Asphalt With Different Particle Sizes, Ran Zhang, Qingli Dai, Zhanping You, Hainian Wang, Chao Peng

Michigan Tech Publications

To improve the performance of petroleum asphalt, bio-char was used as a modifier for a petroleum asphalt binder, in this study. The rheological properties of bio-char modified asphalt binders were compared with different particle sizes and contents, with one control and one flake graphite modified asphalt binder. Specifically, the bio-char modifiers with two particle sizes (ranging from 75 μm–150 μm and less than 75 μm) and three contents of 2%, 4%, and 8% were added into the asphalt binder. A flake graphite powder with particle sizes less than 75 μm was used as a comparison modifier. The Scanning Electron Microscopy …

Properties And Mechanisms Of Self-Sensing Carbon Nanofibers/Epoxy Composites For Structural Health Monitoring, Yanlei Wang, Yongshuai Wang, Baolin Wan, Baoguo Han, Gaochuang Cai, Zhizheng Li

Civil and Environmental Engineering Faculty Research and Publications

In this paper, carbon nanofibers (CNFs) with high aspect ratio were dispersed into epoxy matrix via mechanical stirring and ultrasonic treatment to fabricate self-sensing CNFs/epoxy composites. The mechanical, electrical and piezoresistive properties of the nanocomposites filled with different contents of CNFs were investigated. Based on the tunneling conduction and percolation conduction theories, the mechanisms of piezoresistive property of the nanocomposites were also explored. The experimental results show that adding CNFs can effectively enhance the compressive strengths and elastic moduli of the composites. The percolation threshold of the CNFs/epoxy composites is 0.186 vol% according to the modified General Effective Media Equation. …

A Nonlinear Systems Framework For Cyberattack Prevention For Chemical Process Control Systems, Helen Durand

Chemical Engineering and Materials Science Faculty Research Publications

Recent cyberattacks against industrial control systems highlight the criticality of preventing future attacks from disrupting plants economically or, more critically, from impacting plant safety. This work develops a nonlinear systems framework for understanding cyberattack-resilience of process and control designs and indicates through an analysis of three control designs how control laws can be inspected for this property. A chemical process example illustrates that control approaches intended for cyberattack prevention which seem intuitive are not cyberattack-resilient unless they meet the requirements of a nonlinear systems description of this property.

Engaging Student Patrons With Traditional And Experimental Technology, Scott Russell, Joshua Enos, James Lane, Roy Zimmer

Academic Leadership Academy

No abstract provided.

Bridging The Gap Between Real And Artificial Worlds: The Next Generation Classroom, Lori Brown

Academic Leadership Academy

Students today represent a new generation of learner which requires us to look beyond our tradition training methods. Augmented Reality (AR) has already shown great promise of transforming the way interact with students in any technically driven education such as aviation.

The operation and maintenance of modern aircraft requires an understanding of several interrelated human and machine components requiring practice and immersion. The immersive experience can be enhanced with augmented reality (AR) and virtual reality (VR). Relevant to the task at hand, they both have the ability to alter our perception of the world, give real-time feedback, improve the efficiency …