Mechanical property estimation for additive manufacturing parts with supports

Emre Günaydın*, Erkan Gunpinar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Bridging in additive manufacturing (AM) parts occur between two points without any support from below. If the material extruded between these points is dangled (i.e., not horizontal), this is called poor bridging. This paper investigates the effects of AM process parameters and distance between supports on not only poor bridging but also mechanical properties of parts manufactured using AM. Two estimated models (EMs) are computed to predict ultimate stress and strain given these design parameters. To do this, central composite design (CCD) experimental design method is employed to obtain experiment sets based on design parameters. The number of tests is then increased using a systematic sampling technique to obtain the EMs with accurate prediction quality. Tensile experiments are then carried out for all the experiments. Finally, the obtained EMs are integrated into a process optimization test case, in which design parameters are automatically determined in order to achieve mechanical constraints based on the ultimate stress or strain of the printed parts.

Original languageEnglish
Pages (from-to)4031-4044
Number of pages14
JournalInternational Journal of Advanced Manufacturing Technology
Issue number9-10
Publication statusPublished - Dec 2023

Bibliographical note

Publisher Copyright:
© 2023, The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature.


The authors would like to thank Dr. Emrecan Söylemez and Dr. Yunus Ziya Arslan for their valuable discussions. We would like to express our gratitude to A. Alper Tasmektepligil for machine learning works and Ismail Cem Akgun and Mert Gümüç for their assistance in the tensile tests. This research was supported by Scientific Research Center of Istanbul Technical University (Project Number: 45085)

FundersFunder number
Istanbul Teknik Üniversitesi45085


    • Additive manufacturing
    • Mechanical property estimation
    • Poor bridging
    • Support structure


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