149 research outputs found
AN INVESTIGATION INTO THE PROPERTIES AND FABRICATION METHODS OF THERMOPLASTIC COMPOSITES
As applications for thermoplastic composites increase, the understanding of their properties become more important. Fabrication methods for thermoplastic composites continually improve to match designs specifications. These advanced thermoplastics have begun to show an improvement in mechanical properties over those found in thermoset composites commonly used in industry. Polyaryletherketones (PEK) have high service temperatures, good mechanical properties, and improved processing capabilities compared to thermoplastics used in the past making them important to the aerospace industry. The wide range of types of PEK make them suitable for a variety of applications, but selection of specific chemistries, processing parameters, and composite stack-ups determine the mechanical properties produced. Differential scanning calorimetry (DSC), and Fourier transform infrared spectroscopy (FTIR) were used to determine crystallinity and chemical properties of several polyaryletherketones. Tensile, compressive, and Mode I interlaminar fracture toughness tests were conducted to analyze mechanical properties of these advanced thermoplastics. Several fabrication processes were also tested to determine optimal consolidation and aesthetic appearance of structural members. All testing was conducted at The Boeing Company in Seattle, Washington. Because all testing and conclusions are proprietary a general synopsis of the experience will be presented
A Crow and a Hanger
A Crow and A Hanger is a body of work that explores and illustrates the nature of life and death through the use of mixed-media drawing and printmaking techniques. My intention for this work, and this thesis paper, is to explain my thought process and how the imagery came to be. For me it is not at all important for every viewer to fully understand each image and the thoughts that went into the body as a whole. I let the images and their titles lead the viewer in a general direction and allow for their personal history and biases to fill in the gaps. That being stated, the work for me is a kind of catharsis and coming of age tale. It is a metaphor for my acceptance and interpretation of our place in the cosmic scene. I sum up my thoughts with the affirmation that: You are potential…you are ephemeral…you are permanent
Lessons from #McKinney: Social Media and the Interactive Construction of Police Brutality
Video evidence of police aggression and assault on civilians has previously been considered irrefutable evidence of misconduct; its circulation contributes to the creation of “celebrated cases” of police brutality that draw attention because of their high-profile nature. In June 2015, YouTube, Facebook and Twitter comments on a citizen-captured video of a police officer attempting to apprehend an African-American girl at a pool party in McKinney, Texas, trended as one incident in the #BlackLivesMatter movement’s canon of police mistreatment of African-American citizens. Through the lens of critical race theory, this qualitative content analysis triangulates data from three social media platforms to explore how users interpreted the incident. This study develops insights on how a “celebrated case” of police brutality is constructed by social media audiences. It makes a significant contribution to the literature by focusing on the often-overlooked experiences of African-American women and girls as victims of police brutality
"Me, I'm Living It": The Primary Health Care Experiences of Women who use Drugs in Vancouver’s Downtown Eastside: Summary of Findings from the VANDU Women's Clinic Action Research for Empowerment Study
First paragraph: Preventing and reducing the harmful consequences of drug use has been identified as a key priority in Canada at all levels of government. Initiatives to reduce barriers to care for marginalized women who use drugs are currently underway. However, despite the significant national and international attention paid to the health and social conditions of women in Vancouver's Downtown Eastside (DTES), women who use drugs in this community report persistent health inequities and barriers to accessing a wide range of services, including primary health care, harm reduction services, mental health care, and addictions treatment. These inequities and barriers to care result from a complex interplay of social, political and economic factors. In order to provide effective, empowering, compassionate, and respectful care for women who use drugs it is crucial to understand how these factors influence health and well-being
The Road Less Traveled: State Court Resolution of Patent, Trademark, or Copyright Disputes Symposium - Business Tort Litigation.
Abstract Forthcoming
The Road Less Traveled: State Court Resolution of Patent, Trademark, or Copyright Disputes Symposium - Business Tort Litigation.
Abstract Forthcoming
Measurement of Insulation Compaction in the Cryogenic Fuel Tanks at Kennedy Space Center by Fast/Thermal Neutron Techniques
The liquid hydrogen and oxygen cryogenic storage tanks at John F. Kennedy Space Center (KSC) use expanded perlite as thermal insulation. Th ere is evidence that some of the perlite has compacted over time, com promising the thermal performance and possibly also structural integr ity of the tanks. Therefore an Non-destructive Testing (NDT) method for measuring the perlite density or void fraction is urgently needed. Methods based on neutrons are good candidates because they can readil y penetrate through the 1.75 cm outer steel shell and through the ent ire 120 cm thickness of the perlite zone. Neutrons interact with the nuclei of materials to produce characteristic gamma rays which are the n detected. The gamma ray signal strength is proportional to the atom ic number density. Consequently, if the perlite is compacted then the count rates in the individual peaks in the gamma ray spectrum will i ncrease. Perlite is a feldspathic volcanic rock made up of the major elements Si, AI, Na, K and 0 along with some water. With commercially available portable neutron generators it is possible to produce simul taneously fluxes of neutrons in two energy ranges: fast (14 MeV) and thermal (25 meV). Fast neutrons produce gamma rays by inelastic scatt ering which is sensitive to Fe and O. Thermal neutrons produce gamma rays by radiative capture in prompt gamma neutron activation (PGNA) and this is sensitive to Si, AI, Na, Kand H. Thus the two energy ranges produce complementary information. The R&D program has three phases: numerical simulations of neutron and gamma ray transport with MCNP s oftware, evaluation of the system in the laboratory on test articles and finally mapping of the perlite density in the cryogenic tanks at KSC. The preliminary MCNP calculations have shown that the fast/therma l neutron NDT method is capable of distinguishing between expanded an d compacted perlite with excellent statistics
The Ursinus Weekly, March 16, 1964
Campus Chest set to begin April 6: Shorb and Riley Committee heads • Concert season begun by UC Meistersingers: Group will tour New York state • Noss, theologian & author, will speak here Wednesday • History students will hear Bohl at Wednesday tea • Jeanne Dawson crowned prom queen; Cub and Key taps seven junior men • Three co-eds make US lacrosse team: Great Britain scene of games • Mass meeting of students planned for Wednesday • Group organizes fund campaign; Will defray cost for Ursinus girls on lacrosse team • WSGA approves rule change • Ursinus receives Gulf Oil grant • Psychology Club officers elected • Editorial: Don\u27t walk on that grass; Compulsion won\u27t do it • Journalism grants available • Charles I trial topic of Forum • Letters to the editor • Seek art exchange with Muhlenberg • IRC members hear Barghoorn on Soviet propaganda • Kaffee Klatsch: Determinism, free will • Evening School enrolls 524 • State seeks to annul college charter: Integration irks Mississippians • Agency concert hailed as fine performance • WSGA announces procedure for 1964 election: March 25 petition deadline; Elections will be April 15 • Greek gleanings • Navy offers career program to women • Gwynedd Mercy falls to Ursinus women\u27s 3rd team • Basketball team, coach honored • End of volleyball tourney near • Beaver falls to UC, 61-38 • Kratz caps career • Seals vs. Bock in intramural championship • Netwomen stop Drexel, 5-0https://digitalcommons.ursinus.edu/weekly/1268/thumbnail.jp
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