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Experimental and Computational Analysis of Elastic Modulus of 3D Printed Parts Using Impulse Excitation Technique (IET)

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Abstract

Fused filament fabrication (FFF), also known as fused deposition modeling, is an additive manufacturing (AM) process that has gained interest from industry in a wide range of applications. In this study, the elastic modulus for 3D printed PLA beam samples, per ASTM E1876-15 and E756-05 is determined. The Impulse Excitation Technique (IET) is proposed as an inverse identification and a non-destructive testing method (NDT) to characterize the Young’s modulus of AM materials. Beam samples with three different build orientations are manufactured using the FFF method. The non-contact, laser-based vibration measurement method is used to determine the fundamental flexural frequency of cantilever beam samples. Tensile coupons, per ASTM D638-14 Type I, with three different build orientations, are also 3D printed, using the same manufacturing process and design parameters to validate the results obtained from the IET testing technique. The frequency results are then used to evaluate the beam samples’ Young’s modulus. The elastic modulus values obtained from the IET for all build orientations are found to be in close agreement with those obtained through tensile testing, with an error range of 2.0% to 5.1%. The IET is proved to be a rapid, accurate, and non-destructive process for evaluating Young’s modulus of 3D printed parts.

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Acknowledgments

The authors wish to acknowledge the support provided by the Natural Sciences and Engineering Research Council of Canada (NSERC, RGPIN-2017-06868, and NSERC, RGPIN-2018-04144), and Toronto Metropolitan (formerly Ryerson) University.

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Authors and Affiliations

  1. Department of Aerospace Engineering, Toronto Metropolitan University (formerly Ryerson University), 350 Victoria Street, Toronto, ON, M5B 2K3, Canada

    A. Foroozanfar, M. Afridi, K. Fayazbakhsh & S.M. Hashemi

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  1. A. Foroozanfar
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  2. M. Afridi
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  3. K. Fayazbakhsh
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  4. S.M. Hashemi
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Contributions

Ali Foroozanfar: Investigation, Software, Validation, Formal analysis, Data Curation. Mohsin Afridi: Investigation, Software, Validation, Formal analysis, Data Curation. Kazem Fayazbakhsh: Conceptualization, Methodology, Project Administration, Resources, Writing – Original Draft Preparation, Writing – Review & Editing. Seyed M. Hashemi: Conceptualization, Methodology, Project Administration, Resources, Writing – Original Draft Review & Editing, Writing – Review & Editing, Supervision, Funding acquisition.

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Correspondence to S.M. Hashemi.

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Foroozanfar, A., Afridi, M., Fayazbakhsh, K. et al. Experimental and Computational Analysis of Elastic Modulus of 3D Printed Parts Using Impulse Excitation Technique (IET). Exp Tech 47, 787–795 (2023). https://doi.org/10.1007/s40799-022-00592-3

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  • DOI: https://doi.org/10.1007/s40799-022-00592-3

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