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评估PLA和PETG作为压力强度测试的3D打印参考材料

Bartosz Budziński¹, Karol Federowicz¹

¹Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-310 Szczecin, Poland.

Materials (Basel, Switzerland)

|August 28, 2025

概括

3D打印提供了一种创新的方法来创建建筑测试的参考材料. 在压力强度测量中,聚乙烯二甲酸 (PETG) 的长期稳定性优于聚乳酸 (PLA).

科学领域:

材料科学
土木工程
制造技术

背景情况:

可靠的参考材料对于验证建筑中的压力强度测试至关重要.
目前的参考材料可能缺乏一致性或昂贵.
3D打印技术为制造定制测试材料提供了一种可访问的方法.

研究的目的:

研究使用3D打印来创建压力强度测试的参考材料的可行性.
评估印刷参数 (填充密度,温度) 和材料特性 (PLA与PETG) 对压力强度的影响.
评估3D打印参考材料的长期稳定性和可重复性.

主要方法:

采用化沉积模型 (FDM) 3D打印方法,制造出由聚乳酸 (PLA) 和聚乙烯基四甲酸 (PETG) 修饰的立方样本.
具有不同填充密度的样品经过压力强度测试.
分析了储存时间和环境温度波动对测试结果的影响.

主要成果:

填充密度和压力强度之间有很强的线性相关性.
与PETG相比,PLA的初始压力强度更高 (高达70.7 kN).
与PLA相比,PETG表现出优异的长期稳定性,结果在31天后变化较小.

结论:

3D打印材料,特别是PETG,可以作为土木工程质量控制中的压力强度测试的可重复参考材料.
由于PETG的耐老性,它比PLA更适合作为耐用的参考标准.
这项研究为开发用于破坏性测试的可访问和可靠的机械参考材料提供了途径.

关键词:

三维打印美国美国年龄增长压力强度建筑材料测试质量控制参考资料

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