Influence of toolpath strategy on the dielectric performance of FDM-printed polypropylene composite material
Influence of toolpath strategy on the dielectric performance of FDM-printed polypropylene composite material
The influence of toolpath strategy on the dielectric performance of fused deposition modeling (FDM) - printed polypropylene was investigated. Three-layer specimens with identical nominal thickness and comparable porosity were fabricated using monotonic, concentric, and spiral deposition paths to isolate the effect of internal interface topology. Frequency-domain dielectric spectroscopy, DC resistivity, and AC breakdown measurements were performed. The spiral configuration exhibited increased low-frequency permittivity, higher dielectric loss, and reduced DC resistivity, indicating enhanced interfacial polarization and interface-assisted transport. Although breakdown strength differences were minor, the monotonic configuration showed improved statistical reliability. The results demonstrate that deposition geometry affects dielectric response beyond total void fraction, suggesting that FDM-printed polymers require interpretation frameworks distinct from conventionally processed bulk materials.
Additive manufacturing (AM), 3D printing
Axiotis, Dimitris
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Hosier, Ian L.
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Vryonis, Orestis
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Saeedi, Istebreq A.
6df4dfcf-9bb8-4edc-952e-ccc4841f7b54
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c
21 June 2026
Axiotis, Dimitris
00d112b1-58fd-4c8a-a9d0-ab490e6bad5e
Hosier, Ian L.
6a44329e-b742-44de-afa7-073f80a78e26
Vryonis, Orestis
4affde05-88f2-436f-b036-dceedf31ea9c
Saeedi, Istebreq A.
6df4dfcf-9bb8-4edc-952e-ccc4841f7b54
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c
Axiotis, Dimitris, Hosier, Ian L., Vryonis, Orestis, Saeedi, Istebreq A. and Andritsch, Thomas
(2026)
Influence of toolpath strategy on the dielectric performance of FDM-printed polypropylene composite material.
In IEEE ICD 2026 International Conference on Dielectrics.
IEEE..
(doi:10.1109/CEIDP61707.2025.11218280).
Record type:
Conference or Workshop Item
(Paper)
Abstract
The influence of toolpath strategy on the dielectric performance of fused deposition modeling (FDM) - printed polypropylene was investigated. Three-layer specimens with identical nominal thickness and comparable porosity were fabricated using monotonic, concentric, and spiral deposition paths to isolate the effect of internal interface topology. Frequency-domain dielectric spectroscopy, DC resistivity, and AC breakdown measurements were performed. The spiral configuration exhibited increased low-frequency permittivity, higher dielectric loss, and reduced DC resistivity, indicating enhanced interfacial polarization and interface-assisted transport. Although breakdown strength differences were minor, the monotonic configuration showed improved statistical reliability. The results demonstrate that deposition geometry affects dielectric response beyond total void fraction, suggesting that FDM-printed polymers require interpretation frameworks distinct from conventionally processed bulk materials.
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Published date: 21 June 2026
Venue - Dates:
IEEE ICD 2026 International Conference on Dielectrics, , Southampton, United Kingdom, 2026-06-21 - 2026-06-25
Keywords:
Additive manufacturing (AM), 3D printing
Identifiers
Local EPrints ID: 513923
URI: https://eprints.soton.ac.uk/id/eprint/513923
PURE UUID: dc34d649-7f73-48cb-91f7-37b70a56b34e
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Date deposited: 02 Sep 2026 16:40
Last modified: 13 Sep 2026 15:51
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Contributors
Author:
Dimitris Axiotis
Author:
Ian L. Hosier
Author:
Orestis Vryonis
Author:
Istebreq A. Saeedi
Author:
Thomas Andritsch
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