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首页> 外文期刊>Composite Structures >Enabling rapid fatigue life prediction of short carbon fiber reinforced polyether-ether-ketone using a novel energy dissipation-based model
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Enabling rapid fatigue life prediction of short carbon fiber reinforced polyether-ether-ketone using a novel energy dissipation-based model

机译：使用新型能量耗散的模型实现短碳纤维增强聚醚 - 醚 - 酮的快速疲劳寿命预测

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摘要

In this study, the energy dissipation behavior of short carbon fiber reinforced polyether-ether-ketone (SCFRPEEK) subjected to fatigue loading is investigated. A new model is established to rapidly predict the fatigue limit and S-N curve for SCFR-PEEK by combining thermodynamic laws and fatigue damage mechanisms. An infrared camera is used during the fatigue tests to monitor the evolution of the temperature distribution of the specimen. The energy dissipated during the fatigue test is calculated by solving local thermodynamic differential equations based on the variation in surface temperature of the specimen. Based on thermodynamic laws and the fatigue damage characteristics of SCFR-PEEK, the different sources of intrinsic dissipation are analyzed and classified to determine their correlation to fatigue damage. The intrinsic dissipation contributing to fatigue damage is extracted and used to estimate the fatigue properties of SCFR-PEEK. The model predictions show a satisfactory agreement with the results of traditional fatigue tests, with a goodness of fit of 0.964.
机译：在该研究中，研究了对疲劳负荷进行疲劳负荷进行的短碳纤维增强聚醚 - 醚 - 酮（SCFRPeek）的能量耗散行为。建立一个新模型，通过组合热力学定律和疲劳损伤机制，快速预测SCFR-PEEK的疲劳极限和S-N曲线。在疲劳试验期间使用红外相机来监测样本温度分布的演变。通过基于样本的表面温度的变化来求解局部热力学微分方程来计算在疲劳试验期间的能量。基于热力学定律和SCFR-PEEK的疲劳损伤特征，分析了不同的内在耗散来源，分类，确定它们与疲劳损伤的相关性。提取有助于疲劳损伤的内在耗散，并用于估计SCFR-PEEK的疲劳性能。模型预测表现出令人满意的协议与传统疲劳试验的结果，适合于0.964。

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  • 来源
    《Composite Structures》 |2021年第9期|114227.1-114227.11|共11页
  • 作者

    Li Aijia; Huang Jia; Zhang Chao;

  • 作者单位

    Northwestern Polytech Univ Sch Aeronaut Xian 710072 Peoples R China|Northwestern Polytech Univ Shaanxi Key Lab Impact Dynam & Its Engn Applicat Xian 710072 Peoples R China;

    Univ Shanghai Sci & Technol Sch Mech Engn Shanghai 200093 Peoples R China;

    Northwestern Polytech Univ Sch Aeronaut Xian 710072 Peoples R China|Northwestern Polytech Univ Shaanxi Key Lab Impact Dynam & Its Engn Applicat Xian 710072 Peoples R China|Northwestern Polytech Univ Sch Civil Aviat Taicang 215400 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Thermoplastic composites; Intrinsic dissipation; Fatigue model; Fatigue life;

    机译：热塑性复合材料;内在耗散;疲劳模型;疲劳生活;

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