对碳纤维增强复合材料组件内部泄漏行为的模拟和实验研究
Shu Liu1, Lihua Zhan1, Bolin Ma1
1State Key Laboratory of Precision Manufacturing for Extreme Service Performance, Central South University, Changsha 410083, China.
Polymers
|July 14, 2023
概括
研究了复合材料中的气扩散. 在纤维-树脂接口上观察到更高的泄漏率,泄漏率随压力增加而随厚度减少.
科学领域:
- 材料科学 材料科学 材料科学
- 复合材料 复合材料 复合材料
- 气体扩散是气体扩散的一种方式.
背景情况:
- 了解复合材料中的气体扩散对于预测元件寿命和性能至关重要.
- 复合材料,特别是碳纤维复合材料,由于其强度和轻量特性,在各种行业中广泛使用.
- 透性是影响复合结构长期行为和完整性的关键因素.
研究的目的:
- 为了研究气在复合材料中的扩散规律.
- 分析纤维和纤维树脂接口对气体透性的影响.
- 开发和验证一种同质化的模型,用于模拟碳纤维复合材料组件的泄漏率.
主要方法:
- 使用详细的数值模型模拟气体扩散的数值研究.
- 验证数值发现和模型准确性的实验方法.
- 为高效的泄漏率模拟建立一个同质化的模型.
主要成果:
- 发现气的泄漏率和质量度在纤维树脂接口处比散装树脂更高.
- 泄漏率分布在水平中央线上是对称的.
- 开发的同质化模型准确预测了泄漏率,并通过实验和数值数据进行了验证.
- 泄漏率随着施加的压力而增加,随着样品的厚度而减少.
结论:
- 纤维树脂接口显著影响复合材料中的气扩散.
- 同质化模型提供了一个准确而高效的工具,用于模拟碳纤维复合材料的泄漏率.
- 这些发现对于设计和评估复合材料组件在各种压力和厚度条件下的耐用性至关重要.
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