预处理和后处理对3D打印复合样品的针轴承强度的影响
Yong-Hun Yu1, Do-Hyeon Kim2, Kang Rae Cho3
1Department of Autonomous Vehicle System Engineering, Chungnam National University, Daejeon 34134, Republic of Korea.
Polymers
|October 16, 2025
概括
通过3D打印的碳纤维复合材料显示出不同的机械固定强度,这取决于孔的制造. 后处理增强了硬度和性,这对于海洋应用至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 海洋技术 海洋技术
背景情况:
- 连续纤维复合材料的3D打印为海洋应用提供了潜力.
- 钉轴承固定是连接这些复合材料的可行方法.
- 孔口的制造显著影响了机械紧固件的性能.
研究的目的:
- 评估预加工和后加工对3D打印碳纤维复合材料孔口制造的影响.
- 在不同的制造条件下评估这些复合材料的针轴承强度.
- 了解宽度对直径比率和纤维方向对紧固件性能的影响.
主要方法:
- 针轴承强度测试是在3D打印的欧尼克斯碳纤维复合物样本上进行的.
- 采用前处理和后处理技术制造了孔口.
- 测量了机械性能,包括最终的轴承强度,应变,性和刚性.
主要成果:
- 样品的机械紧固强度根据孔制造方法而有所不同.
- 宽度对直径的比率下降导致轴承的最终强度,应变和性降低.
- 经过后处理的标本在较小孔径 (≤6毫米) 中表现出更高的初始刚度和高达23%的承载应力.
- 经过0°纤维取向的后处理样本显示出明显更高的性,特别是在5毫米和6毫米孔径的样本中.
结论:
- 孔口的制造方法对3D打印复合材料的机械固定强度产生了重大影响.
- 后处理通常会提高刚性和性,特别是对于特定的纤维方向和孔径.
- 使用3D打印复合材料的海洋结构中的机械紧固件的设计考虑因素必须包括纤维方向,宽度至直径比和加工方法.
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