About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Special Session
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Presentation Title |
Influence of Measurement and Sampling Strategy on Analysis of Surface Finish in Laser Powder Bed Fusion Additive Manufacturing of Nickel Superalloy 625 |
Author(s) |
Jason C. Fox, Adam Pintar |
On-Site Speaker (Planned) |
Jason C. Fox |
Abstract Scope |
In laser powder bed fusion (LPBF) additive manufacturing (AM), parts are built through a complex process with size scales that span sub-micrometer to millimeters. This large range and complexity of the build process creates surfaces with complex topographies, large height ranges, and steep slopes when compared to machined surfaces. This causes uncertainty that a surface measurement sufficiently represents the full surface from which it was sampled. The goal of this work is to better understand the measurement and sampling strategy (e.g., point spacing, size and number of measurement regions) to aid development of measurement routines for AM parts. In this work, the height data from a large, as-built nickel superalloy 625 surface built by a commercial LPBF system was subdivided to assess variation in areal surface texture parameters across the surface. The result of this work provides an important step in developing guidance for the measurement of as-built AM surfaces. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |