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Development of the Resin Infusion between Double Flexible Tooling process : assessment of the viability of in-mold coating and implementation of UV curing.

Description: As composites gain wider acceptance in all sectors of the economy, new methodologies must be developed to increase their cost effectiveness in manufacturing. The neoteric Resin Infusion between Double Flexible Tooling (RIDFT) process is undergoing modifications to improve its cost-effectiveness by developing methodologies for in-mold coating and the incorporation of UV curing. In-mold coating is desired by the composites industry since it eliminates the current paint process, which is not only laborious and time consuming, but expensive, and presents safety issues. Two methodologies (paint films and coinfusion) for implementing in-mold coating were investigated. It was demonstrated that thermoformable paint films could be used to produce coated RIDFTed components. Coinfusion was also successfully implemented. This work also investigated the feasibility of designing and incorporating a Cure on Demand system into the RIDFT process, using ultraviolet (UV) light for the curing of composite laminates. The objective was to develop a process for the RIDFT that would eliminate or reduce the inflexibility in the current production process, resulting in shortened production cycle times. UV-cured laminates were produced at a fraction of the time required to produce catalyst-cured laminates. Mechanical and material characterization tests were performed on each of the UV-cured laminates produced. The results were referenced against those obtained for laminates produced using a catalyst curing system to determine their overall quality. The UV-cured laminates, after undergoing tensile and rheological thermal tests, were found to have mechanical and material properties comparable, or in a few instances slightly better, than that of thermally cured laminates.
Date: December 1, 2004
Creator: Okoli, Okenwa I. (. FAMU-FSU College of Engineering, Tallahassee, FL)
Partner: UNT Libraries Government Documents Department

Proposed center for advanced industrial processes. Washington State University, College of Engineering and Architecture

Description: The DOE proposes to authorize Washington State University (WSU) to proceed with the detailed design, construction, and equipping of the proposed Center for Advanced Industrial Processes (CAIP). The proposed project would involve construction of a three story building containing laboratories, classrooms, seminar rooms, and graduate student and administrative office space. Existing buildings would be demolished. The proposed facility would house research in thermal/fluid sciences, bioengineering, manufacturing processes, and materials processing. Under the {open_quotes}no-action{close_quotes} DOE would not authorize WSU to proceed with construction under the grant. WSU would then need to consider alternatives for proceeding without DOE funds. Such alternatives (including delaying or scaling back the project), would result in a postponement or slight reduction in the minor adverse environmental, safety and health Impacts of the project evaluated in this assessment. More importantly, these alternatives would affect the important environmental, safety, health, and programmatic benefits of the projects. The surrounding area is fully urbanized and the campus is intensely developed around the proposed site. The buildings scheduled for demolition do not meet State energy codes, are not air conditioned, and lack handicapped access. Sensitive resources (historical/archeological, protected species/critical habitats, wetlands/floodplains, national forests/parks/trails, prime farmland and special sources of water) would not be affected as they do not occur on or near the proposed site. Cumulative impacts would be small. The proposed action is not related to other actions being considered under other NEPA reviews. There is no conflict between the proposed action and any applicable Federal, State, regional or local land use plans and policies.
Date: March 1, 1995
Partner: UNT Libraries Government Documents Department

Final report on LDRD project : biodiesel production from vegetable oils using slit-channel reactors.

Description: This report documents work done for a late-start LDRD project, which was carried out during the last quarter of FY07. The objective of this project was to experimentally explore the feasibility of converting vegetable (e.g., soybean) oils to biodiesel by employing slit-channel reactors and solid catalysts. We first designed and fabricated several slit-channel reactors with varying channel depths, and employed them to investigate the improved performance of slit-channel reactors over traditional batch reactors using a NaOH liquid catalyst. We then evaluated the effectiveness of several solid catalysts, including CaO, ZnO, MgO, ZrO{sub 2}, calcium gluconate, and heteropolyacid or HPA (Cs{sub 2.5}H{sub 0.5}PW{sub 12}O{sub 40}), for catalyzing the soybean oil-to-biodiesel transesterification reaction. We found that the slit-channel reactor performance improves as channel depth decreases, as expected; and the conversion efficiency of a slit-channel reactor is significantly higher when its channel is very shallow. We further confirmed CaO as having the highest catalytic activity among the solid catalysts tested, and we demonstrated for the first time calcium gluconate as a promising solid catalyst for converting soybean oil to biodiesel, based on our preliminary batch-mode conversion experiments.
Date: January 1, 2008
Creator: Kalu, E. Eric (FAMU-FSU College of Engineering, Tallahassee, FL) & Chen, Ken Shuang
Partner: UNT Libraries Government Documents Department

Particulate Measurements and Emissions Characterization of Alternative Fuel Vehicle Exhaust

Description: The objective of this project was to measure and characterize particulate emissions from light-duty alternative fuel vehicles (AFVs) and equivalent gasoline-fueled vehicles. The project included emission testing of a fleet of 129 gasoline-fueled vehicles and 19 diesel vehicles. Particulate measurements were obtained over Federal Test Procedure and US06 cycles. Chemical characterization of the exhaust particulate was also performed. Overall, the particulate emissions from modern technology compressed natural gas and methanol vehicles were low, but were still comparable to those of similar technology gasoline vehicles.
Date: November 19, 1998
Creator: Durbin, T. D.; Truex, T. J. & Norbeck, J. M. (Center for Environmental Research and Technology College of Engineering, University of California - Riverside, California)
Partner: UNT Libraries Government Documents Department

Quantifying Access Disparities in Response Plans

Description: This article develops and explores data driven methods to quantify vulnerabilities in the context of response plans, addressing limitations on the availability, granularity, and currency of data to identify vulnerable populations.
Date: January 15, 2016
Creator: Indrakanti, Saratchandra; Mikler, Armin R.; O'Neil II, Martin & Tiwari, Chetan
Partner: UNT College of Engineering

A Cost-Effective Wireless Sensor Network System for Indoor Air Quality Monitoring Applications

Description: This paper from the 9th International Conference on Future Networks and Communications, FNC 2014 conference proceedings presents a low-cost indoor air quality monitoring wireless sensor network system developed using Arduino, XBee modules, and micro gas sensors.
Date: August 15, 2014
Creator: Abraham, Sherin & Li, Xinrong
Partner: UNT College of Engineering