Open Access. Powered by Scholars. Published by Universities.®
Design of Experiments and Sample Surveys Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- 3D Print (1)
- 3D Printer (1)
- 3D Printing (1)
- Additive Manufacturing (1)
- Arc Compensation (1)
-
- CAD (1)
- Carbon aerogel (1)
- Catia (1)
- Cura (1)
- Design of Experiments (1)
- FDM (1)
- Filament (1)
- Fused Deposition Modeling (1)
- Nanocelluose (1)
- Nanoporous Carbon (1)
- PLA (1)
- Polyactic Acid (1)
- Polyactide (1)
- Rapid Prototyping (1)
- Response Surface Method (1)
- Slicer (1)
- Tessellation (1)
- Three-Dimensional Printing (1)
- Ultimaker (1)
- Z-wobble (1)
- Publication
- Publication Type
Articles 1 - 2 of 2
Full-Text Articles in Design of Experiments and Sample Surveys
Factors Affecting Dimensional Precision Of Consumer 3d Printing, David D. Hernandez
Factors Affecting Dimensional Precision Of Consumer 3d Printing, David D. Hernandez
International Journal of Aviation, Aeronautics, and Aerospace
This paper investigates the factors affecting dimensional precision of consumer-grade 3D printing, attempting to isolate and mitigate sources of error. The focus is on creating engineering prototypes of, tooling for, or finalized instances of mechanical devices. A specific fused deposition modeling printer – the Ultimaker 2 – is analyzed in terms of meeting precise physical dimensions, consistent shapes, and predictable surface finish. Extensive trial and error resulted in removal of several sources of bias, with square test articles exhibiting a lower-than-anticipated mean percentage error of -0.387% (SD = 0.559), a value comparable to other modern manufacturing techniques. A full …
Nanoscaled Cellulose And Its Carbonaceous Material: Application And Local Structure Investigation, Yujie Meng
Nanoscaled Cellulose And Its Carbonaceous Material: Application And Local Structure Investigation, Yujie Meng
Doctoral Dissertations
In this dissertation, cellulose nanocrystals three-dimensional morphology, size distribution, and the crystal structure were statistically and quantitatively investigated. Lognormal distribution was identified as the most likely for cellulose nanocrystals’ size distribution. Height and width dimensions were shown to decrease toward the ends from the midpoint of individual CNCs, implying a spindle-like shape. XRD analysis of crystallite size accompanied with TEM and AFM measurements revealed that the cross-sectional dimensions of individual switchgrass CNC were either rectangular or elliptical shape, with an approximately 3~5 nm [nanometer] lateral element length range. A sponge-like carbon aerogel from microfibril cellulose with high porosity, ultra-low density, …