Alien Registration- Libby, Annie M. (Portland, Cumberland County)

https://digitalmaine.com/alien_docs/23813/thumbnail.jp

Development of Hybrid Ultra-High Performance Concrete Thermoplastic Composite Panels for Blast and Ballistic Protection

In recent years, ultra-high performance concrete (UHPC) has become a material of interest for structures needing resistance to impact and blast loadings. These types of loadings have induced brittle flexural failure in UHPC due to punching shear from the impactor. One way to improve the impact resistance, energy absorption, and ductility of UHPC is by adding fiber-reinforced polymer (FRP) skins to the front and rear faces of the concrete, resulting in a sandwich configuration. In this study, E-glass fiber-reinforced thermoplastic laminates were bonded to UHPC panels using a heated consolidation process known as stamp thermoforming. The bond between the UHPC and thermoplastic laminates was specifically of interest, so two variables, adhesive type and consolidation pressure, were investigated. The adhesives of interest were polyethylene terephthalate glycol (PETG) neat resin and ethylene acrylic acid (EAA), known by the trade name Surlyn by DuPont. Two pressures of 80 and 100 psi were used to consolidate the sandwich panels during manufacturing. The impact resistance of the thermoplastic-reinforced UHPC panels was investigated through a combination of quasi-static and low-velocity drop weight impact tests. The bond between the UHPC and thermoplastic laminates was analyzed using both three-point bending tests and direct single-lap shear tests. Preliminary results from these tests showed that EAA performed better under impact and produced a stronger bond between UHPC and the thermoplastic laminates than the PETG neat resin. A consolidation pressure of 100 psi was shown to produce a stronger bond than one of 80 psi. More work must be performed to enhance the impact resistance of the thermoplastic-reinforced UHPC sandwich panels and the bond between UHPC and thermoplastic laminates

Alien Registration- Libby, Myrtle M. (Portland, Cumberland County)

https://digitalmaine.com/alien_docs/22062/thumbnail.jp

Sense, Sensibility, Sympathy, Social Class Upheaval in Jane Austen’s Novels

This thesis will explore Jane Austen’s social commentary on class structure and boundaries as they evolved from her writing of Sense and Sensibility to Persuasion. By identifying and researching the philosophical concepts of sense, sensibility, and sympathy in the eighteenth and nineteenth centuries, I examine how Austen shifted her beliefs to reflect the changes in social class occurring in England during her lifetime. I will be conducting close readings of the two novels, along with various historical texts, diary entries, and letters from the time period in question in order to recognize how historical events influenced the social structure in Regency England and how those changes were received by the gentry. By looking at how Austen’s characters react to, reflect on, and work around these boundaries, I recover a better understanding of Regency England society’s feelings and response to these changes as well

Spatial Entanglement From Off-Diagonal Long Range Order in a BEC

We investigate spatial entanglement - particle-number entanglement between regions of space - in an ideal Bosonic gas. We quantify the amount spatial entanglement around the transition temperature for condensation by probing the gas with two localised two-level systems. We show that spatial entanglement in the gas is directly related to filling of the ground state energy level and therefore to the off-diagonal long-range order of the system and the onset of condensation.Comment: 7 pages, 3 figures. Extended from 4 to 7 pages. More detailed derivations of key formula. Extended introduction and background. Results remain unchange

Report of conference evaluation committee

A general classification is made of a number of approaches used for the prediction of turbulent shear flows. The sensitivity of these prediction methods to parameter values and initial data are discussed in terms of variable density, pressure fluctuation, gradient diffusion, low Reynolds number, and influence of geometry