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Title: Multivariate Adaptive Regression Splines as a Tool to Improve the Accuracy of Parts Produced by FSPIF
Authors: Vorbert, Johan
Behera, Amar Kumar ×
Lauwers, Bert
Duflou, Joost #
Issue Date: Apr-2011
Publisher: Trans Tech Publications
Series Title: Key Engineering Materials vol:473 pages:841-846
Conference: 14th International Conference on Sheet Metal Leuven, BELGIUM, APR 18-20, 2011
Abstract: Feature Assisted Single Point Incremental Forming (FSPIF) is a technique to increase the accuracy of the SPIF process. FSPIF generates an optimized toolpath based on the features detected in the workpiece geometry and using knowledge of the behavior of these features during incremental forming. Using this optimized toolpath, parts can be formed with higher accuracy. The prediction of the dimensional deviations occurring in different features during forming as a function of their type (e.g. planar, ruled, freeform or ribs ) and various process parameters, such as sheet thickness, wall angle, tool diameter, rolling direction, etc., is an important step in the FSPIF method. Due to the great number of parameters and combinations that are possible, a mathematical tool should be used in order to automate the prediction process. One such tool is MARS or Multivariate Adaptive Regression Splines, a fast, non-parametric multivariate regression technique with automatic variable selection, which generates continuous surfaces as a response function. In this paper, the authors describe and validate the use of MARS as a tool to predict deviations in uncompensated tests by training the MARS model using only a limited number of experiments. Using this validated model, compensation strategies are developed and implemented, which have shown significant improvements in accuracy in new test cases.
ISSN: 1013-9826
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Production Engineering, Machine Design and Automation (PMA) Section
Centre for Industrial Management / Traffic & Infrastructure
× corresponding author
# (joint) last author

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