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Full-Text Articles in Engineering
Development Of A Miniature Pipe Crawler For Application In Fossil Energy Power Plants, Caique C. Lara
Development Of A Miniature Pipe Crawler For Application In Fossil Energy Power Plants, Caique C. Lara
FIU Electronic Theses and Dissertations
The power generation of fossil fuel power plants relies on burning coal to generate steam. The heat exchange between the water and burned coal occurs in the combustion chamber, which operates at a high pressure and temperature. Monitoring the integrity of the tubes inside the combustion chamber is a key factor to avoid failures. However, this is not an easy task as some areas are hard to reach and the pipeline commonly has a complex geometry. Moreover, the inspection is typically manual, external and the environment is hazardous for humans. This thesis presents the development and testing of an electrically …
Using High-Speed Imaging And Machine Learning To Capture Ultrasonic Treatment Cavitation Area At Different Amplitudes, Brandon Aguiar, Paul G. Bianco, Arvind Agarwal
Using High-Speed Imaging And Machine Learning To Capture Ultrasonic Treatment Cavitation Area At Different Amplitudes, Brandon Aguiar, Paul G. Bianco, Arvind Agarwal
2022 MME Undergraduate Research Symposium
The ultrasonic treatment process strengthens metals by increasing nucleation and decreasing grain size in an energy efficient way, without having to add anything to the material. The goal of this research endeavor was to use machine learning to automatically measure cavitation area in the Ultrasonic Treatment process to understand how amplitude influences cavitation area. For this experiment, a probe was placed into a container filled with turpentine because it has a similar viscosity to liquid aluminum. The probe gyrates up and down tens of micrometers at a frequency of 20 kHz, which causes cavitations to form in the turpentine. Each …
Facilitated Release Of Doxorubicin From Biodegradable Mesoporous Silica Nanoparticles, Melissa Venedicto, Cheng-Yu Lai
Facilitated Release Of Doxorubicin From Biodegradable Mesoporous Silica Nanoparticles, Melissa Venedicto, Cheng-Yu Lai
2022 MME Undergraduate Research Symposium
Cervical cancer is one of the most common causes of cancer death for women in the United States. The current treatment with chemotherapy drugs has significant side effects and may cause harm to healthy cells rather than cancer cells. In order to combat the potential side effects, nanoparticles composed of mesoporous silica were created to house the chemotherapy drug doxorubicin (DOX). The silica network contains the drug, and a pH study was conducted to determine the conditions for the nanoparticle to disperse the drug. The introduction of disulfide bonds within the nanoparticle created a framework to efficiently release 97% of …
Nanomechanical Properties Of Engineered Cardiomyocytes Under Electrical Stimulation, Lia Paolino, Lihua Lou, Alberto Sesena Rubfiaro, Jin He, Arvind Agarwal
Nanomechanical Properties Of Engineered Cardiomyocytes Under Electrical Stimulation, Lia Paolino, Lihua Lou, Alberto Sesena Rubfiaro, Jin He, Arvind Agarwal
2022 MME Undergraduate Research Symposium
Engineered cardiomyocytes made of human-induced pluripotent stem cells (iPSC) present phenotypical characteristics similar to human fetal cardiomyocytes. There are different factors that are essential for engineered cardiomyocytes to be functional, one of them being that their mechanical properties must mimic those of adult cardiomyocytes. Techniques, such as electrical stimulation, have been used to improve the extracellular matrix's alignment and organization and improve the intracellular environment. Therefore, electrical stimulation could potentially be used to enhance the mechanical properties of engineered cardiac tissue. The goal of this study is to establish the effects of electrical stimulation on the elastic modulus of engineered …
Optimization Of Dlp 3d Printed Ceramic Parts, Samuel Ovalle, E. Viamontes, Tony Thomas
Optimization Of Dlp 3d Printed Ceramic Parts, Samuel Ovalle, E. Viamontes, Tony Thomas
2022 MME Undergraduate Research Symposium
Digital Light Processing (DLP) 3D printing allows for the creation of parts with advanced engineering materials and geometries difficult to produce through conventional manufacturing techniques. Photosensitive resin monomers are activated with a UV-producing LCD screen to polymerize, layer by layer, forming the desired part. With the right mixture of photosensitive resin and advanced engineering powder material, useful engineering-grade parts can be produced. The Bison 1000 is a research-grade DLP printer that permits the user to change many parameters, in order to discover an optimal method for producing 3D parts of any material of interest. In this presentation, the process parameter …
Flash Sintering Of Commercial Zirconium Nitride Powders, Diego Dubois, Amirali Eskandariyun, Suprabha Das, Andriy Durygin, Zhe Cheng
Flash Sintering Of Commercial Zirconium Nitride Powders, Diego Dubois, Amirali Eskandariyun, Suprabha Das, Andriy Durygin, Zhe Cheng
2022 MME Undergraduate Research Symposium
Flash sintering is an electrical field-assisted densification technique that requires passing a current through a ceramic powder compact. Pressure-assisted flash sintering of commercially available Zirconium Nitride (ZrN) powders has been demonstrated. Near fully dense samples can be obtained within a short period of time. The influences of parameters such as electrical field strength, voltage ramping rate, current limit, external pressure, pre-heating, and holding time on the onset of the flash event were investigated. Some post-flash sintered samples were subjected to the same condition to observe if the material would experience repeated flash. In addition, material properties such as density and …
Aerodynamic Shape Multi-Objective Optimization For Sae Aero Design Competition Aircraft, Ruben Fernandez, Hernando Lugo, George S. Dulikravich
Aerodynamic Shape Multi-Objective Optimization For Sae Aero Design Competition Aircraft, Ruben Fernandez, Hernando Lugo, George S. Dulikravich
2022 MME Undergraduate Research Symposium
The SAE Regular Class Aero Design Competition requires students to design a radio-controlled aircraft with limits to the aircraft power consumption, take-off distance, and wingspan, while maximizing the amount of payload it can carry. As a result, the aircraft should be designed subject to these simultaneous and contradicting objectives: 1) minimize the aerodynamic drag force, 2) minimize the aerodynamic pitching moment, and 3) maximize the aerodynamic lift force. In this study, we optimized the geometric design variables of a biplane configuration using 3D aerodynamic analysis using the ANSYS Fluent. Coefficients of lift, drag, and pitching moment were determined from the …
Development Of A Pipe Crawler Inspection Tool For Fossil Energy Power Plants, Julie Villamil, Caique Lara, Anthony Abrahao, Aparna Aravelli, Guilherme Daldegan, Sharif Sarker, Dwayne Mcdaniel
Development Of A Pipe Crawler Inspection Tool For Fossil Energy Power Plants, Julie Villamil, Caique Lara, Anthony Abrahao, Aparna Aravelli, Guilherme Daldegan, Sharif Sarker, Dwayne Mcdaniel
2022 MME Undergraduate Research Symposium
Fossil fuel power plants are complex systems containing multiple components that create extreme environments for the purpose of extracting usable energy. Failures in the system can lead to increased down time for the plant, reduction of power and significant cost for repairs. In the past, inspections and maintenance of the plant's superheater tubes has been predominantly manual, laborious, and extremely time consuming. This is due to the pipe's small diameter size (between 1.3 and 7.6 cm) and the coiled structure of the tubing. In addition, the tubes are often stacked close to each other, limiting access for external inspection. Detection …
Testbed For Pressure Sensors, Ana Claus, Borzooye Jafarizadeh, Azmal Huda Chowdhury, Neziah Pala, Chunlei Wang
Testbed For Pressure Sensors, Ana Claus, Borzooye Jafarizadeh, Azmal Huda Chowdhury, Neziah Pala, Chunlei Wang
2022 MME Undergraduate Research Symposium
Currently, several studies and experiments are being done to create a new generation of ultra-low-power wearable sensors. For instance, our group is currently working towards the development of a high-performance flexible pressure sensor. However, with the creation of new sensors, a need for a standard test method is necessary. Therefore, we opted to create a standardized testbed to evaluate the pressure applied to sensors. A pulse wave is generated when the heart pumps blood causing a change in the volume of the blood vessel. In order to eliminate the need of human subjects when testing pressure sensors, we utilized polymeric …