Emily Hunt - Academia.edu (original) (raw)

Papers by Emily Hunt

Research paper thumbnail of Exploring and Developing Hispanic STEM Education in West Texas

2014 ASEE Annual Conference & Exposition Proceedings

Research paper thumbnail of Engineering Learning Communities: Relationships, Results, and Retention

2011 ASEE Annual Conference & Exposition Proceedings

Research paper thumbnail of Engineering Learning Communities

2013 ASEE Annual Conference & Exposition Proceedings

Research paper thumbnail of Introducing Young Children to Engineering through Early STEM Literacy

2011 ASEE Annual Conference & Exposition Proceedings

Research paper thumbnail of Initiatives to financially, academically, and socially support underrepresented minorities in STEM disciplines

2020 ASEE Virtual Annual Conference Content Access Proceedings

Research paper thumbnail of Investigating the governing decolorization mechanisms of nanodiamond in the treatment of an azo dye

DESALINATION AND WATER TREATMENT

Research paper thumbnail of Self-propagating high-temperature synthesis of nanostructured titanium aluminide alloys with varying porosity

Research paper thumbnail of Experimental Measurements and Numerical Modeling for the Air-Mist Cooling of a Heated Cylinder

Research paper thumbnail of A laser induced diagnostic technique for velocity measurements using liquid crystal thermography

International Journal of Heat and Mass Transfer, Sep 1, 2004

Wind tunnel experiments were performed to show that wind velocity could be correlated to thermal ... more Wind tunnel experiments were performed to show that wind velocity could be correlated to thermal patterns generated on a model surface. The idea makes use of the thermal patterns generated by a laser thermal tuft that was originally developed and patented (Patent #5,963,292) by researchers at the USAF Academy and the University of California, Davis. The present study quantifies this

Research paper thumbnail of Antibacterial Metallic Nanofoam and Related Methods

Research paper thumbnail of Hydrostatic Pressure Project: Linked-Class Problem-Based Learning In Engineering

American Journal of Engineering Education (AJEE), 2011

Over the last few years, WTAMU Mathematics, Engineering and Science faculty has used interdiscipl... more Over the last few years, WTAMU Mathematics, Engineering and Science faculty has used interdisciplinary projects as the basis for implementation of a linked-class approach to Problem-Based Learning (PBL). A project that has significant relevance to engineering statics, fluid mechanics, and calculus is the Hydrostatic Pressure Project. This project was developed by faculty associated with the NSF-funded INCRSE project, Increasing Numbers and Connections in Science, Math, and Engineering, for application of the linked-class PBL to calculus II and engineering statics. The students in the linked classes were to predict the horizontal force and the vertical force on a submerged surface and determine the appropriate locations of these forces in order to experimentally verify the calculations. They worked in groups to outline their procedures, develop their functional relations, record experimental data, and report on their findings. Assessment efforts have focused on student laboratory reports and student perceptions about their learning and experiences with this linked-class PBL project collected through surveys and focus groups. In all the surveys and focus groups conducted with students who had participated in the Hydrostatic Pressure Project, all of the students felt their experience was beneficial and had enhanced their understanding and applications of engineering and mathematics.

Research paper thumbnail of Nickel aluminum superalloys created by the self-propagating high-temperature synthesis of nanoparticle reactants

Journal of Materials Research, Sep 30, 2004

Advancements in nanotechnology for material processing via combustion synthesis have spurred the ... more Advancements in nanotechnology for material processing via combustion synthesis have spurred the development of superalloys that provide improved protective properties. Nanoscale reactant particles offer unique thermal properties and increased homogeneity that improve the microstructural features and macroscopic properties of the synthesized product. In this study nanoscale molybdenum trioxide (MoO3) particles were added to micron scale nickel (Ni) and aluminum (Al). The goal was to incorporate a nanoscale additive within the reactant matrix that would produce a superalloy by generating excessively high heating rates and creating controlled quantities of Al2O3 (a strengthening agent) within the microstructure of the alloy. Ignition and flame propagation were examined using a CO2 laser and imaging diagnostics that include a copper-vapor laser coupled with a high-speed camera. Product microstructure was examined using micro-x-ray diffraction analysis and scanning electron microscopy. Abrasion testing was performed to evaluate the wear resistance properties of the superalloy. Results show that adding MoO3 increases the flame temperature, results in greater ignition sensitivity, produces a more homogeneous microstructure, and increases the overall wear resistance of the product.

Research paper thumbnail of Mechanical Properties of NiAl Nanocomposite Intermetallic Alloys With Varying Porosity

ABSTRACT Recent advancements in the field of nano-technology focused attention on developing mate... more ABSTRACT Recent advancements in the field of nano-technology focused attention on developing materials with new and useful characteristics. In particular, there is interest in designing nanocomposite thermites for combustion synthesis applications. The composite material consists of nano-scale particles that are in nearly atomic scale proximity but constrained from reaction until triggered. Once initiated, the reaction will become self-sustaining and a new intermetallic alloy product will be produced. An example of this type of reaction is between Ni and Al such that a nickel-aluminide alloy is produced (Eq. (1) [1].

Research paper thumbnail of Linked-Class Problem-Based Learning In Engineering: Method And Evaluation

American Journal of Engineering Education (AJEE), 2011

Problem-Based Learning (PBL) is a problem-centered teaching method with exciting potential in eng... more Problem-Based Learning (PBL) is a problem-centered teaching method with exciting potential in engineering education for motivating and enhancing student learning. Implementation of PBL in engineering education has the potential to bridge the gap between theory and practice. Two common problems are encountered when attempting to integrate PBL into the undergraduate engineering classroom: 1) the large time requirement to complete a significant, useful problem and 2) the ability to determine its impact on students. Engineering, mathematics, and science professors at West Texas A&M University (WTAMU) have overcome the large time commitment associated with implementation of PBL in a single course by integrating small components of the larger project into each of their classes and then linking these components with a culminating experience for all the classes. Most of the engineering students were concurrently enrolled in the engineering, mathematics, and science classes and were therefore participating in all activities related to the project. This linked-class PBL experience addressed course concepts, reinforced connections among the courses, and provided real-world applications for the students. Students viewed the experience as beneficial, increasing their understanding of content and applications in each discipline. This paper provides details about implementation and evaluation of one PBL project and how difficulties in evaluation of the linked-class PBL experiences are being addressed.

Research paper thumbnail of Breaking the Adhesive Bond between Dialyll Phthlate, Barco Bond 185 and PBX 9501

Journal of Materials Science and Chemical Engineering, 2015

Use of epoxy as an adhesive is a common practice. The most common applications are permanent seal... more Use of epoxy as an adhesive is a common practice. The most common applications are permanent sealants. Epoxies have a wide range of operating temperatures, and are very resistance to adhesive failure. When a need to remove this adhesive arises, it is not always easily accomplished especially if the part has excessive adhesive. To maintain fidelity of the parts attached by epoxy, a project evaluating several methods of epoxy removal was conducted. Methods evaluated included low wavelength, near-ultraviolet radiation, solvent dissolution, and thermal cycling. The UV method failed to demonstrate a repeatable dissociation. The solvent study did result in dissociation of bonds, but introduced chemicals that could make subsequent chemical analysis of parts suspect. Thermal cycling showed a high repeatability for dissociation of bonds and may prove to be relatively inexpensive to implement.

Research paper thumbnail of Mechanical Engineering Education: Preschool to Graduate School

Mechanical Engineering, 2012

Research paper thumbnail of Thermal Influences on the Neutralization of Spore Forming Bacteria

Volume 1: Heat Transfer in Energy Systems; Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Transport Phenomena in Materials Processing and Manufacturing; Heat and, 2012

ABSTRACT Bacillus anthracis spores have shown extreme resistance to heat treatment methods. Vario... more ABSTRACT Bacillus anthracis spores have shown extreme resistance to heat treatment methods. Various novel ideas have emerged including the use of thermite reactions for the de-activation of bacterial spores, focusing on the anthrax forming spore Bacillus anthracis. The basis of de-activation is dependent on the heat transfer to the spore and chemical interaction with the halogen gas. The objective of this work was to observe the mechanisms of de-activation as related to the thermal and halogen gas effect on the spore. Research focused on the specific roles of the heat transfer and the combination of heat and halogen gas. Results showed heat transfer in the spore greatly enhanced the effectiveness of the halogen gasses in the deactivation process. The observed results strengthen the hypothesis that the heat transfer affects the permeability of the bacterial spores, enabling the halogen gas to deactivate the spores. This novel observation leads to further studies in the combustion properties of thermites. Results from this study suggest that thermite formulations with increased heat of reaction will increase the thermal wave promoting spore neutralization.

Research paper thumbnail of Nickel Aluminide Superalloys Created by SHS of Nano-Particle Reactants

MRS Proceedings, 2003

ABSTRACTAdvancements in nanotechnology for material processing have spurred the development of su... more ABSTRACTAdvancements in nanotechnology for material processing have spurred the development of superalloys that provide improved protection against corrosion and wear. Nano-scale reactant particles offer unique thermal properties and increased homogeneity that may improve the microstructural features and macroscopic properties of the final product. In this study up to 10-wt% nano-scale molybdenum tri-oxide (MoO3) particles were added to micron scale nickel (Ni) and aluminum (Al). The goal was to produce a superalloy by generating excessively high heating rates and adding an oxidizer that would produce small quantities of Al2O3 (a strengthening agent) within the microstructure of the alloy. Experiments were performed on pellets pressed to 60% theoretical maximum density. Ignition and flame propagation were examined using a CO2 laser and imaging diagnostics that include a copper-vapor laser coupled with a high-speed camera. Product microstructure was examined using scanning electron m...

Research paper thumbnail of Evaluation Methods for Linked-Course PBL in Engineering

Volume 9: Engineering Education and Professional Development, 2008

ABSTRACT Problem-Based Learning (PBL) has become an increasingly popular method across discipline... more ABSTRACT Problem-Based Learning (PBL) has become an increasingly popular method across disciplines in K-12 and higher education worldwide since it was first introduced to medical education in the late 1960’s. However, it has not gained significant popularity in engineering curricula due to the large time-scale needed to solve complex engineering problems. Previous work by the authors in this area has developed a method for combining problem solving opportunities on a small time scale in linked courses that culminate to solve a challenging problem that would normally take a significant amount of class time. This method of problem-based learning provides a practical application that can be used in engineering curricula. While this method has produced favorable response from both students and faculty involved, there is a need for a more comprehensive effort to develop strategies for evaluation of PBL in mathematics, science and engineering courses, both directly and indirectly. In this study, Engineering Statics, Engineering Physics, and Calculus II are linked using PBL to increase both student engagement and success. For smaller problems, group work with directed individual or interactive tasks is facilitated through teacher-guided discussions. Students who are in these linked (co-enrolled) classes work on small mathematics, physics, and engineering problems that are used to solve a challenging engineering problem. The project addresses concepts taught in class, reinforces connections among the courses, and provides real-world applications. A mixed method evaluation approach was utilized by the external evaluators, the West Texas Office of Evaluation and Research (WTER) including surveys, focus groups, and personal interviews.

Research paper thumbnail of Mechanical Properties of NiAl Nanocomposite Intermetallic Alloys With Varying Porosity

Volume 14: Processing and Engineering Applications of Novel Materials, 2009

ABSTRACT Recent advancements in the field of nano-technology focused attention on developing mate... more ABSTRACT Recent advancements in the field of nano-technology focused attention on developing materials with new and useful characteristics. In particular, there is interest in designing nanocomposite thermites for combustion synthesis applications. The composite material consists of nano-scale particles that are in nearly atomic scale proximity but constrained from reaction until triggered. Once initiated, the reaction will become self-sustaining and a new intermetallic alloy product will be produced. An example of this type of reaction is between Ni and Al such that a nickel-aluminide alloy is produced (Eq. (1) [1].

Research paper thumbnail of Exploring and Developing Hispanic STEM Education in West Texas

2014 ASEE Annual Conference & Exposition Proceedings

Research paper thumbnail of Engineering Learning Communities: Relationships, Results, and Retention

2011 ASEE Annual Conference & Exposition Proceedings

Research paper thumbnail of Engineering Learning Communities

2013 ASEE Annual Conference & Exposition Proceedings

Research paper thumbnail of Introducing Young Children to Engineering through Early STEM Literacy

2011 ASEE Annual Conference & Exposition Proceedings

Research paper thumbnail of Initiatives to financially, academically, and socially support underrepresented minorities in STEM disciplines

2020 ASEE Virtual Annual Conference Content Access Proceedings

Research paper thumbnail of Investigating the governing decolorization mechanisms of nanodiamond in the treatment of an azo dye

DESALINATION AND WATER TREATMENT

Research paper thumbnail of Self-propagating high-temperature synthesis of nanostructured titanium aluminide alloys with varying porosity

Research paper thumbnail of Experimental Measurements and Numerical Modeling for the Air-Mist Cooling of a Heated Cylinder

Research paper thumbnail of A laser induced diagnostic technique for velocity measurements using liquid crystal thermography

International Journal of Heat and Mass Transfer, Sep 1, 2004

Wind tunnel experiments were performed to show that wind velocity could be correlated to thermal ... more Wind tunnel experiments were performed to show that wind velocity could be correlated to thermal patterns generated on a model surface. The idea makes use of the thermal patterns generated by a laser thermal tuft that was originally developed and patented (Patent #5,963,292) by researchers at the USAF Academy and the University of California, Davis. The present study quantifies this

Research paper thumbnail of Antibacterial Metallic Nanofoam and Related Methods

Research paper thumbnail of Hydrostatic Pressure Project: Linked-Class Problem-Based Learning In Engineering

American Journal of Engineering Education (AJEE), 2011

Over the last few years, WTAMU Mathematics, Engineering and Science faculty has used interdiscipl... more Over the last few years, WTAMU Mathematics, Engineering and Science faculty has used interdisciplinary projects as the basis for implementation of a linked-class approach to Problem-Based Learning (PBL). A project that has significant relevance to engineering statics, fluid mechanics, and calculus is the Hydrostatic Pressure Project. This project was developed by faculty associated with the NSF-funded INCRSE project, Increasing Numbers and Connections in Science, Math, and Engineering, for application of the linked-class PBL to calculus II and engineering statics. The students in the linked classes were to predict the horizontal force and the vertical force on a submerged surface and determine the appropriate locations of these forces in order to experimentally verify the calculations. They worked in groups to outline their procedures, develop their functional relations, record experimental data, and report on their findings. Assessment efforts have focused on student laboratory reports and student perceptions about their learning and experiences with this linked-class PBL project collected through surveys and focus groups. In all the surveys and focus groups conducted with students who had participated in the Hydrostatic Pressure Project, all of the students felt their experience was beneficial and had enhanced their understanding and applications of engineering and mathematics.

Research paper thumbnail of Nickel aluminum superalloys created by the self-propagating high-temperature synthesis of nanoparticle reactants

Journal of Materials Research, Sep 30, 2004

Advancements in nanotechnology for material processing via combustion synthesis have spurred the ... more Advancements in nanotechnology for material processing via combustion synthesis have spurred the development of superalloys that provide improved protective properties. Nanoscale reactant particles offer unique thermal properties and increased homogeneity that improve the microstructural features and macroscopic properties of the synthesized product. In this study nanoscale molybdenum trioxide (MoO3) particles were added to micron scale nickel (Ni) and aluminum (Al). The goal was to incorporate a nanoscale additive within the reactant matrix that would produce a superalloy by generating excessively high heating rates and creating controlled quantities of Al2O3 (a strengthening agent) within the microstructure of the alloy. Ignition and flame propagation were examined using a CO2 laser and imaging diagnostics that include a copper-vapor laser coupled with a high-speed camera. Product microstructure was examined using micro-x-ray diffraction analysis and scanning electron microscopy. Abrasion testing was performed to evaluate the wear resistance properties of the superalloy. Results show that adding MoO3 increases the flame temperature, results in greater ignition sensitivity, produces a more homogeneous microstructure, and increases the overall wear resistance of the product.

Research paper thumbnail of Mechanical Properties of NiAl Nanocomposite Intermetallic Alloys With Varying Porosity

ABSTRACT Recent advancements in the field of nano-technology focused attention on developing mate... more ABSTRACT Recent advancements in the field of nano-technology focused attention on developing materials with new and useful characteristics. In particular, there is interest in designing nanocomposite thermites for combustion synthesis applications. The composite material consists of nano-scale particles that are in nearly atomic scale proximity but constrained from reaction until triggered. Once initiated, the reaction will become self-sustaining and a new intermetallic alloy product will be produced. An example of this type of reaction is between Ni and Al such that a nickel-aluminide alloy is produced (Eq. (1) [1].

Research paper thumbnail of Linked-Class Problem-Based Learning In Engineering: Method And Evaluation

American Journal of Engineering Education (AJEE), 2011

Problem-Based Learning (PBL) is a problem-centered teaching method with exciting potential in eng... more Problem-Based Learning (PBL) is a problem-centered teaching method with exciting potential in engineering education for motivating and enhancing student learning. Implementation of PBL in engineering education has the potential to bridge the gap between theory and practice. Two common problems are encountered when attempting to integrate PBL into the undergraduate engineering classroom: 1) the large time requirement to complete a significant, useful problem and 2) the ability to determine its impact on students. Engineering, mathematics, and science professors at West Texas A&M University (WTAMU) have overcome the large time commitment associated with implementation of PBL in a single course by integrating small components of the larger project into each of their classes and then linking these components with a culminating experience for all the classes. Most of the engineering students were concurrently enrolled in the engineering, mathematics, and science classes and were therefore participating in all activities related to the project. This linked-class PBL experience addressed course concepts, reinforced connections among the courses, and provided real-world applications for the students. Students viewed the experience as beneficial, increasing their understanding of content and applications in each discipline. This paper provides details about implementation and evaluation of one PBL project and how difficulties in evaluation of the linked-class PBL experiences are being addressed.

Research paper thumbnail of Breaking the Adhesive Bond between Dialyll Phthlate, Barco Bond 185 and PBX 9501

Journal of Materials Science and Chemical Engineering, 2015

Use of epoxy as an adhesive is a common practice. The most common applications are permanent seal... more Use of epoxy as an adhesive is a common practice. The most common applications are permanent sealants. Epoxies have a wide range of operating temperatures, and are very resistance to adhesive failure. When a need to remove this adhesive arises, it is not always easily accomplished especially if the part has excessive adhesive. To maintain fidelity of the parts attached by epoxy, a project evaluating several methods of epoxy removal was conducted. Methods evaluated included low wavelength, near-ultraviolet radiation, solvent dissolution, and thermal cycling. The UV method failed to demonstrate a repeatable dissociation. The solvent study did result in dissociation of bonds, but introduced chemicals that could make subsequent chemical analysis of parts suspect. Thermal cycling showed a high repeatability for dissociation of bonds and may prove to be relatively inexpensive to implement.

Research paper thumbnail of Mechanical Engineering Education: Preschool to Graduate School

Mechanical Engineering, 2012

Research paper thumbnail of Thermal Influences on the Neutralization of Spore Forming Bacteria

Volume 1: Heat Transfer in Energy Systems; Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Transport Phenomena in Materials Processing and Manufacturing; Heat and, 2012

ABSTRACT Bacillus anthracis spores have shown extreme resistance to heat treatment methods. Vario... more ABSTRACT Bacillus anthracis spores have shown extreme resistance to heat treatment methods. Various novel ideas have emerged including the use of thermite reactions for the de-activation of bacterial spores, focusing on the anthrax forming spore Bacillus anthracis. The basis of de-activation is dependent on the heat transfer to the spore and chemical interaction with the halogen gas. The objective of this work was to observe the mechanisms of de-activation as related to the thermal and halogen gas effect on the spore. Research focused on the specific roles of the heat transfer and the combination of heat and halogen gas. Results showed heat transfer in the spore greatly enhanced the effectiveness of the halogen gasses in the deactivation process. The observed results strengthen the hypothesis that the heat transfer affects the permeability of the bacterial spores, enabling the halogen gas to deactivate the spores. This novel observation leads to further studies in the combustion properties of thermites. Results from this study suggest that thermite formulations with increased heat of reaction will increase the thermal wave promoting spore neutralization.

Research paper thumbnail of Nickel Aluminide Superalloys Created by SHS of Nano-Particle Reactants

MRS Proceedings, 2003

ABSTRACTAdvancements in nanotechnology for material processing have spurred the development of su... more ABSTRACTAdvancements in nanotechnology for material processing have spurred the development of superalloys that provide improved protection against corrosion and wear. Nano-scale reactant particles offer unique thermal properties and increased homogeneity that may improve the microstructural features and macroscopic properties of the final product. In this study up to 10-wt% nano-scale molybdenum tri-oxide (MoO3) particles were added to micron scale nickel (Ni) and aluminum (Al). The goal was to produce a superalloy by generating excessively high heating rates and adding an oxidizer that would produce small quantities of Al2O3 (a strengthening agent) within the microstructure of the alloy. Experiments were performed on pellets pressed to 60% theoretical maximum density. Ignition and flame propagation were examined using a CO2 laser and imaging diagnostics that include a copper-vapor laser coupled with a high-speed camera. Product microstructure was examined using scanning electron m...

Research paper thumbnail of Evaluation Methods for Linked-Course PBL in Engineering

Volume 9: Engineering Education and Professional Development, 2008

ABSTRACT Problem-Based Learning (PBL) has become an increasingly popular method across discipline... more ABSTRACT Problem-Based Learning (PBL) has become an increasingly popular method across disciplines in K-12 and higher education worldwide since it was first introduced to medical education in the late 1960’s. However, it has not gained significant popularity in engineering curricula due to the large time-scale needed to solve complex engineering problems. Previous work by the authors in this area has developed a method for combining problem solving opportunities on a small time scale in linked courses that culminate to solve a challenging problem that would normally take a significant amount of class time. This method of problem-based learning provides a practical application that can be used in engineering curricula. While this method has produced favorable response from both students and faculty involved, there is a need for a more comprehensive effort to develop strategies for evaluation of PBL in mathematics, science and engineering courses, both directly and indirectly. In this study, Engineering Statics, Engineering Physics, and Calculus II are linked using PBL to increase both student engagement and success. For smaller problems, group work with directed individual or interactive tasks is facilitated through teacher-guided discussions. Students who are in these linked (co-enrolled) classes work on small mathematics, physics, and engineering problems that are used to solve a challenging engineering problem. The project addresses concepts taught in class, reinforces connections among the courses, and provides real-world applications. A mixed method evaluation approach was utilized by the external evaluators, the West Texas Office of Evaluation and Research (WTER) including surveys, focus groups, and personal interviews.

Research paper thumbnail of Mechanical Properties of NiAl Nanocomposite Intermetallic Alloys With Varying Porosity

Volume 14: Processing and Engineering Applications of Novel Materials, 2009

ABSTRACT Recent advancements in the field of nano-technology focused attention on developing mate... more ABSTRACT Recent advancements in the field of nano-technology focused attention on developing materials with new and useful characteristics. In particular, there is interest in designing nanocomposite thermites for combustion synthesis applications. The composite material consists of nano-scale particles that are in nearly atomic scale proximity but constrained from reaction until triggered. Once initiated, the reaction will become self-sustaining and a new intermetallic alloy product will be produced. An example of this type of reaction is between Ni and Al such that a nickel-aluminide alloy is produced (Eq. (1) [1].