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Related Experiment Video

Updated: Mar 21, 2026

Multi-material Ceramic-Based Components – Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)
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Terahertz imaging and tomography as efficient instruments for testing polymer additive manufacturing objects.

J B Perraud, A F Obaton, J Bou-Sleiman

    Applied Optics
    |May 4, 2016
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    This summary is machine-generated.

    Terahertz (THz) imaging offers an innovative method for inspecting 3D printed polymer objects, detecting defects and measuring dimensions. THz tomography provides a cost-effective alternative for quality control in additive manufacturing.

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    Area of Science:

    • Materials Science
    • Non-destructive Testing
    • Additive Manufacturing

    Background:

    • Additive manufacturing (AM) enables complex 3D object creation but poses quality control challenges due to layer-by-layer fabrication and potential defects.
    • Traditional inspection methods are difficult to apply to AM parts, necessitating novel approaches for defect detection and dimensional verification.

    Purpose of the Study:

    • To demonstrate terahertz (THz) imaging as an innovative 2D inspection method for polymer materials produced by AM.
    • To explore THz tomography as a cost-effective 3D imaging alternative for routine quality control of AM parts.
    • To experimentally characterize defects and perform volumetric measurements on 3D polymer objects using THz tomography.

    Main Methods:

    • Utilized terahertz (THz) imaging for 2D inspection of polymer samples.
    • Employed THz tomography for 3D reconstruction and volumetric analysis.
    • Experimentally studied 3D polymer objects fabricated via additive manufacturing techniques.

    Main Results:

    • THz imaging successfully performed 2D inspection of polymer materials.
    • THz tomography provided volumetric data for defect characterization and dimensional control.
    • The study established THz technology as a viable method for AM quality assessment.

    Conclusions:

    • Terahertz (THz) imaging and tomography are effective, innovative methods for non-destructive quality control of 3D printed polymer objects.
    • THz technology offers a promising, potentially cheaper alternative to X-ray tomography for routine industrial inspection of AM parts.