About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Materials
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Presentation Title |
The Effect of Stress Intensity Factor on Fatigue Life of Additive Manufactured Parts Made from Polymer |
Author(s) |
Hayat EL Fazani, Rahul Shah, Jason Coil, Jeremy Laliberte |
On-Site Speaker (Planned) |
Hayat EL Fazani |
Abstract Scope |
The fatigue characteristics of additively manufactured specimens was investigated. Acrylonitrile-butadiene-styrene (ABS) polymer was selected to manufacture AM fatigue coupons due to its low cost and wide applications. A total of 30 fatigue coupons were built on flat using Stratasys SST 1200es fused deposition machine. The coupons were manufactured at different build orientations. The objective is to determine which build orientation results in the most favorable fatigue behavior. The specimens were tested under low sinusoidal tension-tension fatigue loading. The stress intensity factor was estimated. The influence of stress intensity factor on fatigue life was examined. The investigation of fatigue crack growth as a function of the number of fatigue cycles was discussed. A numerical simulation of fatigue life estimation was performed using COMSOL Multiphysics software. Both experimental and numerical results showed that the fatigue coupons manufactured at 0° build orientation have a better fatigue life compared with the other build orientations. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |