对交联复合板材的层层和叶间层特性进行超声波评估
1Department of Aeronautics and Astronautics, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8540, Japan.
Ultrasonics
|August 20, 2023
概括
超声波非破坏性评估可以准确地确定碳/环氧复合材料层和叶间层的性能. 有限厚度模型比以前分析这些先进材料的方法提高了准确性.
科学领域:
- 材料科学 材料科学 材料科学
- 非破坏性测试是一种非破坏性测试.
- 复合材料 复合材料 复合材料
背景情况:
- 碳/环氧复合材料与叶间树脂层在航空航天和汽车行业至关重要.
- 准确地描述层层和叶间特性对于预测层层性能至关重要.
- 现有的模型往往过于简化了叶间层,限制了评估的准确性.
研究的目的:
- 开发和验证超声波非破坏性评估 (NDE) 程序,以表征碳/环氧层中的层和叶间层特性.
- 为了研究有限厚度的叶间层模型对超声波传播分析的有效性.
- 检查弹性和粘弹性特性对材料特性的影响.
主要方法:
- 超声波非破坏性评估 (NDE) 使用纵向波在水中浸泡.
- 最适合于实验超声波测量的理论能量传输光谱.
- 对复合板材实施有限厚的叶间层模型.
- 对弹性和粘弹性材料行为进行分析.
主要成果:
- 该程序准确地识别了层属性 (密度,厚度,弹性模块) 和叶间层属性 (密度,厚度,Young模块,Poisson比率).
- 有限厚度的叶间模型显著改善了实验传输光谱的复制,特别是在超声波带间隙的存在下.
- 该模型成功地描述了单向和准同otropic层的材料特性,使用相同的层和叶间特性.
结论:
- 建议的超声波NDE程序提供了一个强大的方法来表征碳/环氧复合材料中的层和叶间层的特性.
- 有限厚度的叶间模型提供了优越的精度,与以前的超声波分析简化模型相比.
- 这种技术能够精确地确定材料属性,这对于先进复合结构的设计和可靠性至关重要.
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