通过3D打印热复合材料的单纤维拉出测试来研究纤维-矩阵接口强度:简化方法
Kaan Nuhoglu1, Neyton M Baltodano1, Emrah Celik1
1Mechanical and Aerospace Engineering Department, University of Miami, Coral Gables, FL 33146, USA.
Materials (Basel, Switzerland)
|May 25, 2024
概括
一种新的,负担得起的方法准确地测量了增材制造复合材料的接口强度. 这种技术量化了碳纤维和环氧矩阵之间的键,这对于航空航天应用至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 添加剂制造 添加剂制造 添加剂制造
背景情况:
- 纤维增强热复合材料的增材制造 (AM) 正在增长,特别是在航空航天领域.
- 在AM复合材料中测量纤维矩阵接口强度的现有方法是复杂而昂贵的.
- 精确的接口强度数据对于优化复合材料性能至关重要.
研究的目的:
- 为单纤维拉出测试开发一种新的,具有成本效益的方法.
- 为了量化增材制造的热复合材料的接口切削强度.
- 用碳纤维和环氧矩阵复合材料验证新方法.
主要方法:
- 开发了一种嵌入单个纤维在复合材料试样中的技术.
- 使用传统的机械测试系统进行纤维拉伸实验.
- 通过精确的拉出力测量来表征界面切割强度.
主要成果:
- 成功地将碳纤维嵌入热环氧基质中.
- 实现了纤维拉伸强度的精确表征.
- 在碳纤维和环氧基质之间确定了2.4 MPa的平均界面强度.
结论:
- 新的单纤维拉出测试是一种可行的,负担得起的方法来评估接口强度.
- 这种方法可以应用于各种增材制造的复合材料.
- 这些发现有助于推进复合材料制造以提高机械性能.
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