Characterization of anisotropic mechanical properties of polymer composites from a hybrid additive manufacturing-compression molding process using x-ray computer tomography

Deepak Kumar Pokkalla; Vipin Kumar; Eonyeon Jo; Ahmed Arabi Hassen; Ercan Cakmak; Shailesh Alwekar; Vlastimil Kunc; Uday Vaidya; Harsh K. Baid; Seokpum Kim

doi:10.1117/12.2614620

18 April 2022 Characterization of anisotropic mechanical properties of polymer composites from a hybrid additive manufacturing-compression molding process using x-ray computer tomography

Deepak Kumar Pokkalla, Vipin Kumar, Eonyeon Jo, Ahmed Arabi Hassen, Ercan Cakmak, Shailesh Alwekar, Vlastimil Kunc, Uday Vaidya, Harsh K. Baid, Seokpum Kim

Author Affiliations +

Proceedings Volume 12047, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVI; 120470V (2022) https://doi.org/10.1117/12.2614620
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States

Abstract

In this study, anisotropic stiffness tensors were reconstructed based on fiber orientation distributions obtained from X-ray computer tomography (xCT). A preform was manufactured via a big area additive manufacturing (BAAM) system with carbon fiber (CF) filled acrylonitrile butadiene styrene (ABS). The tailored preform from additive manufacturing (AM) was used in the compression molding (CM) process to produce a low-void high-performance thermoplastic composite panel. An xCT technique was employed to detect the fiber orientations in CF/ABS composites manufactured via three different methods: AM from BAAM, extrusion compression molding (ECM), and AM-CM. The anisotropic stiffness tensor was obtained from the composite panel manufactured via the three manufacturing methods (AM, ECM, and AMCM). A micromechanics theory was used to obtain the orthotropic stiffness tensors of the composite panels and compared with the experimental values. The predicted stiffness tensors of AM and AM-CM composite panels were used to study the deformation characteristics of a steering wheel during airbag deployment by performing finite element analysis (FEA). The approach developed in this study can be utilized for evaluating high-performance composites.

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Citation Download Citation

Deepak Kumar Pokkalla, Vipin Kumar, Eonyeon Jo, Ahmed Arabi Hassen, Ercan Cakmak, Shailesh Alwekar, Vlastimil Kunc, Uday Vaidya, Harsh K. Baid, and Seokpum Kim "Characterization of anisotropic mechanical properties of polymer composites from a hybrid additive manufacturing-compression molding process using x-ray computer tomography", Proc. SPIE 12047, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVI, 120470V (18 April 2022); https://doi.org/10.1117/12.2614620

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