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About this Abstract
Meeting 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Symposium 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Presentation Title Quantifying Degree of Anisotropy in Polymer AM Parts
Author(s) Davis Avera, Partha P Pandit, Mark Yang
On-Site Speaker (Planned) Davis Avera
Abstract Scope Anisotropy plays a significant role in polymer additive manufacturing (AM). This affects performance and reliability of AM parts. Nevertheless, studies which investigative anisotropy often overlook the effects of interlayer dwell time (the time spent between deposited layers). Interlayer dwell time affects interlayer bonding, material properties, and the thermal history of the parts. This study aims to investigate how interlayer dwell time influences the degree of anisotropy in Fusion Filament Fabrication (FFF) AM PLA components. This is accomplished by using ultrasonic time-of-flight measurements to calculate the directional wave speeds and elastic moduli. Samples were fabricated using FFF with systemically varied dwell-time parameters, post-processed, and analyzed using ultrasonic immersion testing. The results show quantitative insight into how dwell time changes the anisotropic response of FFF parts, which is critical for load bearing components, process-aware design, and multi-part build planning and assembly.
Proceedings Inclusion? Undecided

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