Sedlar, Teddi
(2024)
Permeability Via Falling Head Test in Binder Jet 3D Printed Gas Atomized and Water Atomized Inconel 625.
Master's Thesis, University of Pittsburgh.
(Unpublished)
Abstract
Additive manufacturing (AM) is increasingly utilized to create parts with complex external and internal geometries. Binder jet 3D printing, a sinter-based AM method, can produce parts with controlled connected porosity that could be used for industrial applications such as filtration. In order to better understand the relationship between porosity and inherent permeability of binder jet printed material, the permeability of binder jet 3D printed Inconel 625 samples was examined using the falling head test. The samples were printed from both gas atomized and water atomized powder feedstock of comparable particle size. Green parts were sintered at different temperatures and for different durations to generate a range of final densities between 60% and 90% for each powder type. A custom falling head test apparatus was designed to test the permeability of the sintered samples. The permeability of both gas atomized and water atomized Inconel 625 was found to decrease as density increased. Neither powder type was found to generate an overall higher permeability than the other across comparable densities. A baseline for permeability of additively manufactured Inconel 625 was established for future work examining specific questions of permeability in binder jet printed materials. Avenues to calibrate the falling head test to suit sample properties for increased precision and extended applications are identified.
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Details
| Item Type: |
University of Pittsburgh ETD
|
| Status: |
Unpublished |
| Creators/Authors: |
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| ETD Committee: |
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| Date: |
6 September 2024 |
| Date Type: |
Publication |
| Defense Date: |
16 July 2024 |
| Approval Date: |
6 September 2024 |
| Submission Date: |
8 April 2024 |
| Access Restriction: |
2 year -- Restrict access to University of Pittsburgh for a period of 2 years. |
| Number of Pages: |
106 |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
Swanson School of Engineering > Materials Science and Engineering |
| Degree: |
MS - Master of Science |
| Thesis Type: |
Master's Thesis |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
Additive Manufacturing, Binderjet Printing, Inconel 625, Porosity, Permeability, Falling Head Test, Hydraulic Conductivity |
| Date Deposited: |
06 Sep 2024 19:53 |
| Last Modified: |
06 Sep 2024 19:53 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/46064 |
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