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The use of nano-computed tomography (nano-CT) in non-destructive testing of metallic parts made by laser powder-bed fusion additive manufacturing

The International Journal of Advanced Manufacturing Technology volume 98, pages 3147–3153 (2018)Cite this article

Abstract

Computed tomography (CT) magnifies the spectrum of measurable internal features with minimal preparation and exceptional resolution. In this study, non-destructive nano-scale and micro-scale CT examinations of aluminum-based part manufactured by laser powder-bed fusion additive manufacturing (LPBF-AM) are compared to determine the extent of defect details (size and distribution of defects/pores) not detectable with micro-CT. Our findings show nano-CT system is able to provide insightful information for effective characterization of AM-made parts to predict their strength/durability more reliably.

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Acknowledgments

This work is sponsored by the Federal Economic Development Agency for Southern Ontario (FedDev Ontario) and Ontario Research Fund-Research Excellence. The authors would like to acknowledge Dr. James Hinebaugh and Michael George from Expanse Microtechnologies Inc. for providing support with data acquisition and image processing.

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Authors and Affiliations

  1. Multi-Scale Additive Manufacturing Lab, Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada

    Mehrnaz Salarian & Ehsan Toyserkani

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  1. Mehrnaz Salarian
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  2. Ehsan Toyserkani
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Correspondence to Mehrnaz Salarian.

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Salarian, M., Toyserkani, E. The use of nano-computed tomography (nano-CT) in non-destructive testing of metallic parts made by laser powder-bed fusion additive manufacturing. Int J Adv Manuf Technol 98, 3147–3153 (2018). https://doi.org/10.1007/s00170-018-2421-z

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  • DOI: https://doi.org/10.1007/s00170-018-2421-z

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