Multiscale tensile behavior of 3D-printed Onyx/glass honeycombs across wide temperatures

IF 7.8 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2026-07-01 Epub Date: 2026-06-13 DOI:10.1016/j.compstruct.2026.120553

Shiyun Lin, Donghang Jie, Jie Bai, Menghao Ran, Ying Li, Yuhuan Du, Tianzhi Luo, Dagang Yin

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引用次数: 0

Abstract

Continuous fiber-reinforced polymer composites (CFRPCs) are prized in aerospace for their high specific strength and stiffness. However, their mechanical properties show significant temperature sensitivity, especially in additively manufactured honeycomb structures. This work experimentally investigated tensile behavior of 3D-printed honeycomb composites across temperatures. The material featured an Onyx matrix with high-strength, high-temperature (HSHT) glass fibers. Quasi-static tensile tests ran at −30°C, 25°C, 70°C, 100°C, and 130°C. Mechanical responses were systematically characterized. Fracture surfaces underwent SEM analysis to identify failure mechanisms. Fractal dimension analysis quantified crack path complexity. A sequentially coupled thermomechanical FE model simulated the honeycomb’s temperature-dependent response. Results showed tensile strength generally decreased with temperature. Notably, toughness retention occurred at 100°C, evidenced by increased failure strain and energy absorption. FE simulations captured internal stress field evolution. They revealed altered stress distributions and temperature-dependent stress concentrations. Simulations replicated the progressive strength degradation trend. This experiment-simulation agreement offers fresh insights into temperature-driven failure mechanisms of 3D-printed CFRPC honeycombs.

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3d打印玛瑙/玻璃蜂窝在宽温度下的多尺度拉伸行为

连续纤维增强聚合物复合材料（cfrpc）因其高比强度和刚度而在航空航天领域受到重视。然而，它们的力学性能表现出明显的温度敏感性，特别是在增材制造的蜂窝结构中。本研究通过实验研究了3d打印蜂窝复合材料在不同温度下的拉伸行为。该材料的特点是玛瑙基体具有高强度，高温（HSHT）玻璃纤维。准静态拉伸试验在- 30°C、25°C、70°C、100°C和130°C下进行。系统地表征了机械响应。对断裂表面进行扫描电镜分析以确定断裂机制。分形维数分析量化了裂纹路径复杂度。一个顺序耦合的热力有限元模型模拟了蜂窝的温度依赖响应。结果表明，拉伸强度随温度升高而降低。值得注意的是，在100°C时发生韧性保持，这可以通过增加的失效应变和能量吸收来证明。有限元模拟捕捉了内部应力场的演化过程。他们揭示了应力分布的变化和温度依赖的应力集中。模拟模拟了强度的逐渐退化趋势。该实验模拟协议为3d打印CFRPC蜂窝的温度驱动失效机制提供了新的见解。

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.