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| 高温-冲刷-振动环境下陶瓷基复材结构动态性能退化测试平台开发及应用 |
| Developed and Applications of Dynamic Performance Degradation Testing Platform for Ceramic Matrix Composite Structures Under High Temperature-Scouring-Vibration Environments |
| 投稿时间：2024-06-07 修订日期：2024-11-12 |
| DOI： |
| 中文关键词: 高温-冲刷-振动环境 动态性能退化 陶瓷基复合材料 退化测试平台 |
| 英文关键词:high temperature-scouring-vibration environments dynamic performance degradation ceramic matrix composite degradation testing platform |
| 基金项目:航空科学基金(2022Z009050002),国家自然科学基金(52175079和12472005),中央高校基本科研业务费(N2103026) |
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| 中文摘要: |
| 为了实现复合材料结构在高温、冲刷、振动耦合环境下动态性能退化的测试,对高温-冲刷-振动环境下先进复材结构退化测试平台设计进行了研究。介绍了测试平台各部分的功能设计及实现原理,完成了该平台的组建。利用所开发的测试平台,以石英纤维陶瓷基复合材料薄板试件为例,对其在不同温度、退化时间及冲刷时间条件下的退化现象进行了一系列测试,获得了相应的固有频率和共振响应的退化曲线。结果表明：在高温振动环境下,随着温度和退化时间的增加,前两阶固有频率分别减小,而前两阶共振响应呈现明显的上升趋势；火焰冲刷会导致试件的第一阶固有频率下降和共振响应增大。相关测试结果能够达到预期的材料性能退化实验效果,该测试平台可为多种先进陶瓷基复材结构在极端苛刻载荷环境下的动态性能退化试验提供重要的测试数据。 |
| 英文摘要: |
| A new dynamic performance degradation testing platform of advanced composite structures under high temperature-scouring-vibration environments has been self-designed and developed to achieve corresponding tests under such coupled environment. The functional design and implementation principles of various parts of this system are introduced in detail, and the construction of the testing platform is completed. Additionally, the degradation curves of natural frequency and resonant response of quartz fiber ceramic matrix composite thin plates under various temperature, degradation time and flushing time are obtained based on the above testing platform. The testing results show that the first two natural frequencies decrease, while the first two resonant response displays a significant upward trend as the temperature and degradation time increase. Flame spraying can cause a decrease in the first natural frequency and an increase in resonance response of the sample. The corresponding testing results can achieve the expected experimental effect of material performance degradation. Therefore, the self-designed testing platform can provide important measurement data for the dynamic performance degradation testing of various advanced ceramic matrix composite structures under extreme load environments. |
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