Abstract
Creep testing is one of the most expensive datasets to acquire in both cost ($10k+) and time (2+ months). Dynamic Mechanical Analysis offers a unique opportunity to characterize creep properties of polymers using a technique called Time Temperature Super Positioning (TTSP) in a relatively short period of time. TTSP works by holding either frequency or loading constant at set temperatures for a constant period of time. WLF equations are then used to combine multiple curves from different temperatures into a master curve that can be used to extrapolate out creep performance at designated reference temperatures and save a considerable amount of time if it is comparable to actual creep. Methods were examined to compare neat polypropylene and PP-GF30 long fiber thermoplastic. Long-term flexural creep was also tested at multiple loads and temperatures.
College
College of Science & Engineering
Department
Composite Materials Engineering
Campus
Winona
First Advisor/Mentor
Eric Kerr-Anderson
Start Date
4-19-2023 9:00 AM
End Date
4-19-2023 10:00 AM
Presentation Type
Poster Session
Format of Presentation or Performance
In-Person
Session
1a=9am-10am
Poster Number
27
Included in
Flexural Creep Comparison to TTS Creep for PP and PP-GF30
Creep testing is one of the most expensive datasets to acquire in both cost ($10k+) and time (2+ months). Dynamic Mechanical Analysis offers a unique opportunity to characterize creep properties of polymers using a technique called Time Temperature Super Positioning (TTSP) in a relatively short period of time. TTSP works by holding either frequency or loading constant at set temperatures for a constant period of time. WLF equations are then used to combine multiple curves from different temperatures into a master curve that can be used to extrapolate out creep performance at designated reference temperatures and save a considerable amount of time if it is comparable to actual creep. Methods were examined to compare neat polypropylene and PP-GF30 long fiber thermoplastic. Long-term flexural creep was also tested at multiple loads and temperatures.
