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Effects of Varied Mold Temperature on Polyethylene Injection Molded Parts
No full textThe cooling process is the biggest contributor to injection molding cycle time, and it is the most impactful on final part properties. One way to control both cycle time and part properties as a function of cooling is to manipulate mold temperatures. For this study, we molded HDPE from three different sources (control, virgin, and crate) at three different mold temperatures: 15.6 oC (low), 22.2 oC (mid-range) and 49 oC (high). Parts were analyzed for changes in part dimensions, mechanical, and thermal properties. To establish the degree of part shrinkage after injection molding, parts were measured immediately after molding, after one hour, after 24 hours, and after 168 hours. Each material shrank after processing with the greatest shrinkage occurring within one hour of molding. The greatest shrinkage was observed in all materials at the mid-range mold temperature. Parts were also characterized for tensile, flexural, and impact properties. Crate material demonstrated the highest tensile and flexural moduli overall. Mid-range mold temperatures yielded the highest tensile modulus for all materials. Virgin material demonstrated the highest overall elongation while crate material had the lowest elongation. Low-range mold temperature showed the greatest elongation in all materials. No clear trend was observed for impact properties. Differential scanning calorimetry was used to analyze thermal transitions as a function of mold temperature. Crystallization and melting temperatures were not significantly affected. Crate material had the highest percent crystallinity overall. We have demonstrated that mid-range mold temperatures result in optimized part properties for the HDPE materials in this study
New Product Development: Injection Molded Flowerpot from Recycled Material
No full textThe Department of Plastics Engineering Technology at Pittsburg State University aims to advance sustainability of plastics. We designed a new product (a flowerpot) that could be molded using the Engel e-Motion injection molder. All parts were designed to be molded with recycled material. Initially, we gathered information on important considerations when designing flower pots from local industries: size, shape, and other important design details to incorporate into the team\u27s initial designs. The injection molder\u27s capabilities also had to be considered when determining the size of the flowerpot. Design software (Solidworks) was utilized to generate several initial designs. Calculations within the design software were preformed to determine important concerns including cooling time, tonnage requirements, and part cost. Additional software (SigmaSoft) was used to simulate the process of creating the flowerpot inside the injection molder. 3-D printing was used to better visualize the designs. After the final design was chosen, we reached out to mold manufacturers to create the new molding tool for the plastics lab with our final flowerpot design. The mold shop revised the final design and began manufacturing the mold base. Once the mold arrives at Pittsburg State University, we will begin process development studies on the product. The use of hot tip bushing will help eliminate the amount of plastic waste for every manufactured part compared to other designs. After initial mold development studies, we will be able to manufacture these flowerpots for teaching and promotional purposes
Green OA Day 2025
Get PDFThis 3 page document introduces green OA, Digital Commons, and the benefits of posting in an IR.
“Green OA Day is a grassroots library initiative to promote and educate about green open access (OA). Green OA Day 2025 will be held on Monday, March 17.
Also referred to as self-archiving, green OA is when authors make a version of their published, pay-to-access works freely accessible on some kind of website or repository so that anyone with internet access can read and learn from it.
Green OA is a cost-effective and equitable pathway to making research open access, especially for authors who can’t afford to pay the article processing fees charged by Gold OA journals. It’s also a pathway towards meeting funder requirements for open access!”
--Finch, E. (Last updated March 3, 2025). “Green OA Day Wiki.” Open Science Framework. https://osf.io/25kav/wiki/home
The Use of Artificial Intelligence in Nursing Simulation
Get PDFThe integration of Artificial Intelligence (AI) into nursing simulation education is transforming the landscape of healthcare training, offering innovative solutions to enhance learning outcomes and improve clinical preparedness. This poster presentation will explore how AI technologies can be utilized to elevate nursing simulation education by providing realistic, adaptive, and personalized learning experiences. The use of AI in nursing simulation allows students to engage in dynamic, hands-on scenarios that replicate real-world clinical environments. These scenarios are created to adapt in real time to students\u27 decisions, providing immediate feedback and fostering critical thinking and clinical decision-making skills.
Additionally, AI enables the creation of complex, data-driven simulations that reflect a diverse range of patient conditions and emergencies, allowing for repetitive practice in a safe, controlled environment. This is especially beneficial in exposing nursing students to rare or high-risk situations that they may not encounter in traditional clinical settings.
By harnessing AI’s potential, nursing education can be more efficient, accessible, and effective, ensuring that future nurses are better equipped to deliver high-quality care. This poster presentation will highlight current AI iniatives in nursing simulation, discuss challenges and opportunities, and propose strategies for further integration into nursing curricula to prepare students for interactions with real patients in the healthcare setting.
AI assistance was utilized in the creation of this abstract.https://digitalcommons.pittstate.edu/ai-posters-2025/1007/thumbnail.jp
Reed W. Schmickle
No full textPhoto of a faculty member who served as editor for the Midwest Quarterlyhttps://digitalcommons.pittstate.edu/yearbookphotos/1045/thumbnail.jp
MacKay, John G. collection
Get PDFJohn G. MacKay, Jr. was born in 1935 in Minneapolis, Minnesota. He received a Bachelor of Arts from the University of Minnesota in 1956, bachelor’s and master’s degrees from Julliard School of Music in 1959, and a Master of Fine Arts from the University of Iowa in 1966.
In 1975, MacKay joined the music faculty at Pittsburg State as an Assistant Professor of Music. He became head of piano studies while continuing to compose original music.
Music composed by MacKay for trombone and various accompaniments comprises the bulk of the materials. There is also a program from a tribute recital held at PSU in 1998 featuring performances of his compositions, and two pieces written for voice and piano.https://digitalcommons.pittstate.edu/fa/1444/thumbnail.jp
Behind the Scenes - Printing with Little Blue Book Plates, Video
No full textVideo clips showing some of the process of Alyssa, Angel, Olivia, and Rafael testing how to get the best print with some of the original plates used to print E. Haldeman-Julius\u27s Little Blue Books
Gymnasium and Practice Field
No full textBlack and white photo of the Garfield W. Weede Gymnasium building. In front of the building is a practice field (now the Weede parking lot). Two people are practicing pitches and batting.https://digitalcommons.pittstate.edu/weede_gym/1044/thumbnail.jp
Weede - Construction Sign
No full textColor photo of the construction of the Garfield W. Weede Physical Education building, taken in 1969 or 1970. In the background, the wooden frame of the building is being constructed. In the foreground, a sign for the future building reads: Kansas State College of Pittsburg, Garfield W. Weede Physical Education Building. Higher Education Facilities Program. 605,130 Federal Grant (Title) 2,000,000 State Fund. Robert B. Docking, Governor of Kansas, U.S. Office of Education.https://digitalcommons.pittstate.edu/weede_gym/1075/thumbnail.jp