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Effect of Infill Percentage and Pattern Variations on the Compressive Strength and Material Properties of 3D Printed HDPE Materials
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Effect of Infill Percentage and Pattern Variations on the Compressive Strength and Material Properties of 3D Printed HDPE Materials

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Abstract:

This study examines how infill percentage and infill pattern affect the compressive strength of 3D-printed High-Density Polyethylene (HDPE) parts using Fused Deposition Modeling (FDM). Specimens were printed with infill densities of 15%, 30%, 60%, and 100% across three patterns: honeycomb, grid, and triangular. Compression tests followed ASTM D695 standards. Results show that compressive strength increases significantly with higher infill percentages, with fully solid (100%) samples reaching up to 43.35 MPa. Among patterns, the honeycomb design consistently outperformed grid and triangular structures due to its efficient stress distribution. At lower infill percentages, pattern choice had a stronger impact, while at higher densities, the infill percentage became the dominant factor. These findings offer practical guidelines for optimizing strength and efficiency in applications such as aerospace, automotive, and healthcare.

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Periodical:

Solid State Phenomena (Volume 379)

Pages:

9-15

DOI:

https://doi.org/10.4028/p-Och3XV

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Online since:

November 2025

Authors:

Moosa Salim M. Al-Kharusi*, Mohammed S. Al Owiemri1

Keywords:

3D Printing, Additive Manufacturing, Compressive Strength, Fused Deposition Modeling (FDM), HDPE, Infill Pattern, Infill Percentage, Mechanical Properties, Structural Optimization

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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