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使用熔融沉积成型（FDM）3D打印技术对由聚乳酸（PLA）和聚对苯二甲酸乙二醇酯-环己烷二甲醇酯（PETG）制成的薄壁柱的屈曲和失效进行研究。

Investigation of Buckling and Failure in Thin-Walled Columns Fabricated from PLA and PETG Using FDM 3D Printing.

作者信息

Baranovskyi Denys, Wysmulski Pawel, Rozylo Patryk, Debski Hubert, Bulakh Maryna, Kopyść Marcin, Myamlin Sergey

机构信息

Faculty of Mechanics and Technology, Rzeszow University of Technology, 4 Kwiatkowskiego Street, 37-450 Stalowa Wola, Poland.

Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland.

出版信息

Materials (Basel). 2025 Jul 17;18(14):3346. doi: 10.3390/ma18143346.

DOI:10.3390/ma18143346
PMID:40731556
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12297988/
Abstract

This paper presents the results of an experimental study on the buckling and failure behavior of thin-walled square columns made from PLA and PETG polymers using FDM 3D printing technology. Thin-walled square columns made from thermoplastic materials, intended for use in lightweight load-bearing applications such as structural supports in transportation, construction, and mechanical assemblies, were tested under axial compression from the onset of buckling to complete failure. The novelty of this work lies in the application of an interdisciplinary experimental approach to the analysis of the behavior of thin-walled columns made of PLA and PETG materials during FDM 3D printing under compression until complete failure, as well as the use of acoustic and optical diagnostic methods for a comprehensive assessment of damage. The experimental results are as follows: Buckling load (N): PLA-1175 ± 32, PETG1-1910 ± 34, PETG2-1315 ± 27. Ultimate load (N): PLA-2770, PETG1-4077, PETG2-2847. Maximum strain: PLA-11.35%, PETG1-11.77%, PETG2-10.99%. Among the tested materials, PETG1 exhibited the highest resistance and energy absorption capacity upon failure, making it a favorable choice for manufacturing 3D-printed load-bearing columns.

摘要

本文介绍了一项实验研究的结果，该研究针对使用熔融沉积成型（FDM）3D打印技术由聚乳酸（PLA）和聚对苯二甲酸乙二酯二醇（PETG）聚合物制成的薄壁方柱的屈曲和失效行为。由热塑性材料制成的薄壁方柱，旨在用于诸如运输、建筑和机械组件中的结构支撑等轻质承重应用，在轴向压缩下从屈曲开始到完全失效进行了测试。这项工作的新颖之处在于采用跨学科实验方法来分析PLA和PETG材料制成的薄壁柱在FDM 3D打印过程中受压直至完全失效时的行为，以及使用声学和光学诊断方法对损伤进行全面评估。实验结果如下：屈曲载荷（N）：PLA - 1175±32，PETG1 - 1910±34，PETG2 - 1315±27。极限载荷（N）：PLA - 2770，PETG1 - 4077，PETG2 - 2847。最大应变：PLA - 11.35%，PETG1 - 11.77%，PETG2 - 10.99%。在测试的材料中，PETG1在失效时表现出最高的抗性和能量吸收能力，使其成为制造3D打印承重柱的理想选择。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/32b552cb409f/materials-18-03346-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/277302a16f26/materials-18-03346-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/c8dadd6bfd89/materials-18-03346-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/757bd4872f37/materials-18-03346-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/a6bf5e881811/materials-18-03346-g004a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/9ccc9898e476/materials-18-03346-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/7abdcaf71f22/materials-18-03346-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/b6a26650f26b/materials-18-03346-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/32b552cb409f/materials-18-03346-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/277302a16f26/materials-18-03346-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/c8dadd6bfd89/materials-18-03346-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/757bd4872f37/materials-18-03346-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/a6bf5e881811/materials-18-03346-g004a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/9ccc9898e476/materials-18-03346-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/7abdcaf71f22/materials-18-03346-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/b6a26650f26b/materials-18-03346-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9c80/12297988/32b552cb409f/materials-18-03346-g008.jpg

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