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Robotic Additive Manufacturing
Robotic Additive Manufacturing
Stander Symposium Projects
Additive manufacturing (AM) is popularly known as 3D printing. It is a technology that produces a physical part directly from its corresponding digital 3D model design. Printing parameters defined in the slicer software generate tool paths for each layer, and the printers deposit the materials on top of each layer to produce the 3D part. AM technology has been widely used in many fields for rapid prototyping. Technological advancements in AM have shifted its purpose to manufacturing. However, when compared to traditional manufacturing, AM is a slow process. So, printing process speed must be improved by developing new mechanisms and …
Blend Prediction Model For Freezing Point Of Jet Fuel Range Hydrocarbons
Blend Prediction Model For Freezing Point Of Jet Fuel Range Hydrocarbons
Stander Symposium Projects
Sustainable aviation fuels are a near-term solution for aviation greenhouse gas emission reduction. To become a sustainable aviation fuel, a synthetic fuel derived from a renewable source must have specifications written into ASTM D7566 as an annex to regulate its quality. However, before a sustainable aviation fuel can be added, it must be thoroughly evaluated and approved by all stakeholders through an time and volume intensive, as well as expensive process described in ASTM D4054. For this reason, the prescreening process is being developed. Prescreening is a process to measure or predict, from very small sample volumes, key fuel properties …
Thermal Conductivity Determination Of Organic Nanofluids By Mdsc
Thermal Conductivity Determination Of Organic Nanofluids By Mdsc
Stander Symposium Projects
Vegetable oil phase change materials (PCMs) have great potential in refrigeration applications in developing countries due to their availability and low toxicity. In this report, jojoba oil (melting point: 11.72°C; latent heat of fusion: 105.5 J/g) was investigated for its viability as a cold storage PCM. Thermal conductivity of the pure jojoba oil was enhanced by doping it with three different carbon nanoparticles: graphene, multi-walled carbon nanotubes, and activated carbon. The thermal conductivity of the pure oil and nanofluids in the solid phase were found using modulated differential scanning calorimetry (MDSC). Adding carbon nanoparticles could increase the thermal conductivity of …
Fabrication And Design Of 3d Printed Transparent Tissue Chips
Fabrication And Design Of 3d Printed Transparent Tissue Chips
Stander Symposium Projects
In vitro human tissue models and biocompatible microfluidic devices have emerged as powerful research tools and screening platforms for pre-clinical assessments of drug candidates in the pharmaceutical industry. However, there are numerous facets of the current technology that limit its adoption and impact in the industry. The usability, manufacturability, and ability to adequately model the tissues are the challenges that the current engineered tissue models struggle to address. The need for inexpensive and accessible microfluidic devices requires new manufacturing techniques and designs. This research focused on developing a proof of concept and prototype for a transwell insert that was designed …
Multi-Robot Path Planning With Collision Avoidance
Multi-Robot Path Planning With Collision Avoidance
Stander Symposium Projects
Integrating robotics into manufacturing tasks is now a decades-old practice with ongoing advances making robotics faster, cheaper, and more accurate on an almost daily basis. Individually, robots have become highly effective at performing tasks in isolation. The goal of this research is to advance automatic path planning for multiple robot agents to intelligently and cooperatively accomplish manufacturing tasks in close proximity. These robots can range from simple robot architectures to several 6-DOF articulated arms on mobile bases to be used for spray coating, pressure washing, media blasting, and sanding. These applications are low-volume, high-mix manufacturing environments where task variability renders …
Local Supplier Management System For Independent Grocery Stores
Local Supplier Management System For Independent Grocery Stores
Stander Symposium Projects
Gem City Market is a cooperative grocery store that seeks to help ease food insecurity in the south side of Dayton, while stimulating the local economy. Gem city has a goal of providing 15-20% of their products from local sources. In order to help achieve this my project was focused on idealizing a local food system for Gem City to connect with and cooperate with local food producers. Having multiple smaller suppliers is more complex and therefore expensive to maintain than have a few larger suppliers. Creating a map of local producers and suppliers would be a useful tool for …
Predicting Fading In Free Space Communication Channel Using Deep Learning
Predicting Fading In Free Space Communication Channel Using Deep Learning
Stander Symposium Projects
Free space optical communication plays a role in daily communications and has the advantage that it does not need a huge infrastructure of cables. Due to that advantage it can be used to deliver the internet to urban as well as remote locations, in the communication with drones, etc. However, the optical signal propagating through the atmosphere gets distorted due to fluctuations in weather parameters such as temperature and wind speed, resulting in optical turbulence, which impacts the strength of the optical signal that is received. In our work, we will use a deep learning algorithm to predict when these …
Six-Bar Linkage Models Of A Recumbent Tricycle Mechanism To Increase Power Throughput In Fes Cycling
Six-Bar Linkage Models Of A Recumbent Tricycle Mechanism To Increase Power Throughput In Fes Cycling
Stander Symposium Projects
This research presents the kinematic and static analysis of two mechanisms to improve power throughput for persons with tetra- or paraplegia pedaling a performance tricycle via FES. FES, or functional electrical stimulation, activates muscles by passing small electrical currents through the muscle creating a contraction. The use of FES can build muscle in patients, relieve soreness, and promote cardiovascular health. Compared to an able-bodied rider, a cyclist stimulated via FES produces an order of magnitude less power creating some notable pedaling difficulties especially pertaining to inactive zones. An inactive zone occurs when the leg position is unable to produce enough …
A Numerical Study Of Radiative Fin Performance With An Emphasis On Geometry And Spacecraft Applications
Stander Symposium Projects
Radiative fin technology is used in a wide variety of applications: automotive, electronics, and space. However, radiative fin is generally only analyzed along the thickness profile. This work analyzes radiative fin planar geometry and thickness profile in tandem. From there, the findings are used to investigate a novel dynamic spacecraft radiator system. Fins are analyzed to optimize for a variety of performance criteria, including maximum heat transfer, tip temperature, or fin efficiency. For analysis of both static and dynamic fins, a two-dimensional mathematical heat transfer model is developed. It is found that a triangular thickness profile is most critical for …
Design Of An Investment Ready Solar Energy, Bitcoin Mining, & Water Purification Package For Equity Expansion In The Navajo Nation
Stander Symposium Projects
Although the world lives in the 21st century, inequality, poverty, hunger, and thirst plague many parts of the world. While developing nations receive a vast majority of the attention and aid, there are communities closer to home which should garner greater publicity than they currently receive. In the United States alone, large populations of people live without access to running water, let alone potable water for consumption, cooking, and general hygiene. For centuries, Native American populations have endured hardship and suffering at the hands of the American people and government, who seem to have all but forgotten their existence. In …
The Effect Of Different Types Of Ankle Foot Orthoses On Balance And Stability
The Effect Of Different Types Of Ankle Foot Orthoses On Balance And Stability
Stander Symposium Projects
Ankle-foot orthoses (AFOs) have been shown to negatively affect dynamic balance, while having little or positive impact on static balance. The cost of carbon composite AFOs (cAFOs) is higher than traditional polypropylene AFOs (pAFOs), yet there is limited research comparing the two. This study investigated the effect of using carbon and polypropylene AFOs on static and dynamic balance. We hypothesized that postural sway would be reduced when wearing the cAFO (which has an anterior shell) compared to the pAFO. Seventeen healthy college-aged students first completed quiet-standing trials of the Modified Test of Sensory Interaction on Balance on a force-measuring platform …
Establishing Soft Robot Modeling And Simulation Fundamentals To Drive Smart Hose Design
Establishing Soft Robot Modeling And Simulation Fundamentals To Drive Smart Hose Design
Stander Symposium Projects
Soft robotics is a rapidly growing field with numerous possible applications. In grinding applications, coolant flow must be perfectly directed onto a part to prevent defects. Frequent, manual adjustments must be performed by operators, generally by bending hard tubing. By developing a smart-hose that is controlled by varying the air pressure in a series of internal chambers, machine operators can make fine adjustments to the coolant flow without entering the machine's workspace and interrupting the process. To do so, fundamentals of modeling and simulation in Solidworks using real-world material data must be established. This is done by comparing tensile testing …
Assessing And Improving The Biocompatibility And Usability Of Composite Additively Manufactured Organ-On-Chip Devices
Stander Symposium Projects
Fluidic organ-on-chip (OOC) devices are powerful tools in biomedical research, allowing for the set-up, control, and monitoring of complex biological scenarios that better mimic in vivo conditions. Currently, the adoption of OOC devices for biological research is limited due to low yields and high-cost stemming from the engineering expertise and manual skill required to design and fabricate them. Additive manufacturing techniques making use of digital modularity can reduce the expertise and skill required while increasing functionality with multi-material components. We report on our work evaluating the biocompatibility of 3D-printed cell culture devices with various materials and surface modifications. OOC devices …
Novel Phosphorus-Based Flame Retardant For High-Performance Carbon Fiber Reinforced Composites
Novel Phosphorus-Based Flame Retardant For High-Performance Carbon Fiber Reinforced Composites
Stander Symposium Projects
This study aims to determine the initial performance of a novel phosphorus-containing epoxy monomer that could be incorporated into conventional epoxy (DGEBA) formulations to produce high-performance carbon fiber epoxy composites with little or no compromise in processing, treatment, and mechanical characteristics. This poster outlines the results of an experimental study on a novel phosphorus-based flame retardant (Phosphorus-Diglycidyl Ether of Bisphenol A) (P-DGEBA), which was synthesized at U.D. and then blended into a traditional epoxy-amine resin formulation. Differential scanning calorimetry (DSC) was used to evaluate the curing behavior of P-DGEBA with epoxy resin. Thermogravimetric analysis (TGA) was also used to investigate …
A Systematic Review Of Nursing Cognitive Workload For Improved Patient Care And Reduced Healthcare Acquired Infections
Stander Symposium Projects
The COVID-19 pandemic pushed the limits of healthcare systems worldwide warranting studies to improve preparedness for future outbreaks. This paper’s purpose was to synthesize and identify missing gaps in the literature of nurse cognitive workload and its relation to Healthcare Acquired Infections (HAIs) through the use of a systematic literature review. The results suggest that undesirable outcomes in nursing are due to increases in workload and stress which result from factors such as inadequate staffing, lack of communication, interruptions, and negative attitudes. To understand the effect of environmental factors on nurses’ workload and subsequently the HAI, we need to have …
Design Of A Soft Robot Pneumatic Cushion For Bedsore Prevention In Persons With Paraplegia Or Tetraplegia
Stander Symposium Projects
The University of Dayton Design of Innovative Machines Lab (DIMLab) is working in the area of soft robot design. In prior work, the DIMLab has investigated accurate CAD modeling of the PneuNet actuator, proposed by the Whitesides Research Group of Harvard University. PneuNet actuators are mainly used as soft robotic grippers capable of readily moving fragile or asymmetrical objects. The DIMLab has started to explore the use of soft robotics in a variety of fields, from medical to manufacturing. One potential novel application of soft robotic technology is in the prevention of pressure ulcers. Persons with para- or tetraplegia, and …
Approximate Motion Synthesis By Using The Poles Of Planar Displacements
Approximate Motion Synthesis By Using The Poles Of Planar Displacements
Stander Symposium Projects
The primary objective of this research work is to reformulate and solve a basic machine design problem called approximate motion synthesis. The need for this reformulation is that prior techniques rely on numerical methods and the need for significant user input. The pole method being proposed herein is a more straightforward approach that is simpler to implement and requires fewer inputs to find a solution. Our research focuses on approximate motion synthesis for the simplest of linkages, a planar four-bar. The reason for this is that a four-bar can produce an approximation solution to a manufacturing or assembly problem, and …
Topology Optimization Results Spaceframe Interpreter (Torsi)
Topology Optimization Results Spaceframe Interpreter (Torsi)
Stander Symposium Projects
Fundamental criteria for the design of aircraft are low weight, high rigidity and high strength structures. As such, topology optimization (TO) is an attractive technique for the design of efficient structures. TO refines a designated design space subjected to a series of loads and restraints, numerically producing a structurally optimized solid part. Commonly the optimization objective is to minimize the strain energy of the structure given a specified mass. Yet, a serious challenge to the widespread adoption of TO is related to interpretation of the optimal topology and its manufacturing feasibility. The TO process often results in an organic looking …
Kinematic Synthesis In The Design Of Continuum Robots
Kinematic Synthesis In The Design Of Continuum Robots
Stander Symposium Projects
Continuum robots are a type of robot composed of multiple sections that bend continuously along their elastic structures. Because of this, these robots are typically referred to as “snake-like”. Due to their soft structure, continuum robots have many significant advantages over conventional serial robots: flexibility, compliance, and dexterity. With these capabilities, continuum robots are well-suited for minimally invasive surgery, search and rescue operations, and a variety of inspection tasks. However, the additional complexity of continuum robots introduces a new set of synthesis challenges as compared to their rigid counterparts. In this research, we focus on the inverse kinematics (IK) problem …
Investigating The Role Of Protein Environment On Rare-Earth Metal Binding Via Molecular Dynamics Simulations
Stander Symposium Projects
This project looks into the Lanmodulin protein (LanM) that binds selectively to rare-earth metals in specific binding sites. We look into why this protein is selective to the rare-earth metals if it is depending on the protein environment or the makeup of the individual binding loops in the protein. We approached this question by modifying similar ion binding proteins found in a BLAST search, and replacing the binding sites with the loops found in the LanM protein. After doing so we used molecular dynamic simulations to observe the binding in the modified proteins.
Fabrication And Characterization Of Pva/Peo/Cb Nanocomposite Films
Fabrication And Characterization Of Pva/Peo/Cb Nanocomposite Films
Stander Symposium Projects
We report on the fabrication and characterization of polyvinyl alcohol (PVA) and polyethylene oxide (PEO) blended polymer nanocomposite (PNC) films loaded with different weight percentages of carbon black (CB) using stencil printing method. The effect of PVA and PEO weight ratio, and the CB content on the morphological and electrical properties of the PNC films were studied using a surface profilometer, scanning electron microscope, and four-point probe method, respectively. The percolation threshold of the PNC films was determined as 0.2vol%. An electrical conductivity of 0.417 S/m was achieved with 14wt% CB loading. The demonstrated PNC films can find its use …
Evaluating Solar Array Positioning Designs For Small Satellites
Evaluating Solar Array Positioning Designs For Small Satellites
Stander Symposium Projects
CubeSats are standard modular satellites mostly used for scientific research. Each unit (U) is 10 × 10 ×10 cm with a mass of up to 1.33 kg. Due to their reduced launch costs, standardized components, and shorter manufacturing lead time, CubeSats have become an attractive innovation in the space sector. However, the weight and size limitations of CubeSats reduce the available power budget and stored energy reserves, which limit their advanced capabilities and performance. This research studies the energy output from a 3U CubeSat in both Geosynchronous and Sun-synchronous orbits with several solar panel design configurations. The alternatives include rigidly …
Design And Validation Of A Liquid-Liquid Extraction Unit Operation Experiment
Design And Validation Of A Liquid-Liquid Extraction Unit Operation Experiment
Stander Symposium Projects
Liquid-liquid extraction (LLE) is a separation technique that transfers a solute between two immiscible solvents. The separation of ethanol through LLE is prevalent in biomass purification, gas additives, and the food safety industries. This research aims to generate a new experiment involving LLE processes in the Unit Operations laboratory at UD. Castor oil served as the organic phase to separate ethanol from water due to their differences in miscibility. The effectiveness of castor oil was measured using a mixer-settler unit (~ 2 L) with a 5 wt.% ethanol/water mixture. Volumetric ratios of castor oil to ethanol, such as 6:4, 5:5, …
Investment Ready Solar+Bitcoin Mining Package For Rural Communities.
Investment Ready Solar+Bitcoin Mining Package For Rural Communities.
Stander Symposium Projects
Although we are living in the modern-day, global warming and poverty are the main challenges in this world. In this research project, we are targeting to provide a sustainable energy source and income for a rural community in Afghanistan. This will not only provide them with a clean energy source but will also support them financially. In this project, the solar mini-grid system will provide 6 hours of electricity for the community as well as the bitcoin miners installed on the farm. Basically, solar PV systems generate electricity during the daytime and feed it to the miners and battery storage. …
Excess Energy And Cryptocurrency For A Local Community In Liberia
Excess Energy And Cryptocurrency For A Local Community In Liberia
Stander Symposium Projects
Model for assessing of the viability of using biodiesel generator to produce electricity for mobile cryptocurrency mining containers and to provide electricity for a local community needs in Liberia. Proposed modular and cost effective design for biodiesel generated Electricity and Cryptocurrency Mining. The model considers the features of mining hardware, the price of virtual currency, Operation maintenance cost and fuel cost to produce 1 kWh using biodiesel generator, heat loss of container, cooling system for mining hardware, to predict the payback period of the investment. This work will help the local communities around the world to access the energy and …