About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Strength Comparison of a Topology Optimized Truss Structure from Printed SLA Resin, Electroplated Resin and DMLS Aluminum |
Author(s) |
Sean Wise, Allison M. Beese, Analisa Russo, Lourdes Bobbio, Timothy W. Simpson |
On-Site Speaker (Planned) |
Sean Wise |
Abstract Scope |
Given the high cost of metal components made with DMLS, we compare the strength of two electroplated resin components against monolithic SLA polymer and DMLS aluminum versions of the same geometry. Using ROM, validated by ASTM tensile strength measurements, two coating sequences were designed to provide electroplated samples with half the tensile strength and equivalent tensile strength of DMLS Al, respectively. All four sets were subjected to 3-point bending. The monolithic materials had higher proportionate maximum load with respect to tensile strength; however, the electroplated polymer part displayed enhanced bending response relative to its designed tensile strength. The plated part with weaker coating bore 85% of the load of DMLS aluminum part while the parts with a stronger coating bore almost twice the load. The enhanced performance is due to the surface reinforcement from the high strength coating, which better resists bending and buckling in this type of design. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |