Keywords and Phrases
Additive Manufacturing; Linear Regression Analysis; Part Accuracy; Point Cloud Measurement; Position Dependency; Selective Laser Melting
“Selective laser melting is one of the commonly used additive manufacturing processes employed for production of functional part. Therefore, quality aspects such as dimensional accuracy have become a point of great interest. Like all of the other additive manufacturing processes selective laser melting process suffers from the issue if having wide range of process parameters making the process control a complex task. Additionally, issues specific to the selective laser melting process such as position dependency of accuracy of the part, makes it difficult to predict the resulting dimensional inconsistencies in the part manufactured by this processes. This research is an effort to address the issue of part accuracy as a function of part positioning within the build volume. In this research part errors are defined as the function of part location using multiple linear regression model fitting technique. The resulting model is used to develop the understanding of the effect of principle directions onto errors in the part. In addition, a case study has been conducted to validate the model application for different combination of part geometries and part location. The model was found to be useful to accurately compensate part dimensions at same as well as different part locations within the build chamber for parts having same geometry as that of calibration part. The approach can prove to be useful for practical applications such as small batch production reducing part errors thereby requiring lesser post processing work”--Abstract, page iii.
Liou, Frank W.
Mechanical and Aerospace Engineering
M.S. in Manufacturing Engineering
Missouri University of Science and Technology
viii, 74 pages
© 2017 Ninad Kulkarni, All rights reserved.
Thesis - Open Access
Electronic OCLC #
Kulkarni, Ninad, "Error mapping of build volume in selective laser melting" (2017). Masters Theses. 8051.