Durability and Reliability Estimation of Flax Fiber Reinforced Composites Using Tweedie Exponential Dispersion Degradation Process
Durability and Reliability Estimation of Flax Fiber Reinforced Composites Using Tweedie Exponential Dispersion Degradation Process
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使用 Tweedie 指数色散降解过程评估亚麻纤维增强复合材料的耐久性和可靠性
DOI：
10.1155/2021/6629637
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发表时间：
2021-02
影响因子：
--
通讯作者：
Bigaud David
中科院分区：
文献类型：
--
作者：
Yan Weian;Riahi Hassen;Benzarti Karim;Chlela Robert;Curtil Laurence;Bigaud David
亚麻纤维增强复合材料显示出良好的结果，使其成为替代合成复合材料在各种工业应用中的潜在候选人。然而，关于其长期性能的信息有限，并且通常认为天然纤维的耐受性不如合成纤维。在这种情况下，在考虑将其用于结构修复和建筑加固之前，研究其耐久性是至关重要的。本研究旨在研究和预测生物基环氧基亚麻纤维增强聚合物（FFRP）复合材料的性能。试验计划包括将FFRP层压板和FFRP增强混凝土板暴露在不同的加速老化条件下，为期两年。在本研究中，不是考虑单一的应力变量，而是考虑两个环境应力变量，温度(T)和相对湿度（RH）的各种组合和耦合，从而将本研究与大多数文献报道的工作区分开来。然后，定期对老化样品进行一系列机械破坏试验，以评估随老化时间的性能演变。对收集到的实验数据进行了分析，建立了性能演化模型，并对这种新型生物基FFRP复合材料的使用寿命性能进行了评估。为此，研究了以Wiener过程、Gamma过程、逆高斯过程等著名随机过程为特例的Tweedie指数色散（TED）过程模型的潜力。TED过程建模在复杂退化机制的情况下特别有趣，用于破坏性试验，最后，基于确定的TED过程模型进行可靠性分析，以便在FFRP的特定情况下更新国际规范提供的FRP设计方程。
Flax fiber reinforced composites are demonstrating promising outcomes which make them potential candidates to replace synthetic composites in various industrial applications. However, there is limited information regarding their long-term performance, and it is usually acknowledged that natural fibers are less resistant than their synthetic counterparts. In this context, it is crucial to study their durability before considering their use for structural rehabilitation and strengthening in construction. This research aims to study and predict the performance of flax fiber reinforced polymer (FFRP) composites with a biobased epoxy matrix. The test program consists in exposing FFRP laminates and FFRP strengthened concrete slabs to different accelerated ageing conditions over a total period of two years. In the present study, not a single stress variable but various combinations and coupling of two environmental stress variables, temperature (T) and relative humidity (RH), are considered, thereby distinguishing this study from most of the works reported in the literature. Then, a series of mechanical destructive tests are performed periodically on aged samples to evaluate property evolutions over ageing time. The collected experimental data are analyzed to develop a performance evolution model and to evaluate the service lifetime performance of this new biobased FFRP composite. For that, the potential of the Tweedie exponential dispersion (TED) process model, which takes some famous stochastic processes (Wiener process, Gamma process, and inverse Gaussian process) as special cases, is investigated. The TED process modeling, particularly interesting in the cases of complicated degradation mechanisms, is written here for destructive tests and, finally, a reliability analysis based on the TED process model determined is carried out in order to update the FRP design equations provided by international codes in the specific case of FFRP.
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用于降解建模、预测和加速降解测试计划的 Tweedie 指数离散过程
影响因子：
5.9
作者：
Chen Zhen;Xia Tangbin;Li Yanting;Pan Ershun
通讯作者：
Pan Ershun
DOI：
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发表时间：
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期刊：
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影响因子：
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作者：
通讯作者：
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DOI：
10.1080/03610926.2014.988262
发表时间：
2017-01
期刊：
Communications in Statistics - Theory and Methods
影响因子：
--
作者：
Wei Yan;Baowei Song;Gui-Lin Duan;Yimin Shi
通讯作者：
Wei Yan;Baowei Song;Gui-Lin Duan;Yimin Shi
影响因子：
--
作者：
Weian Yan;D. Bigaud;Nadare Matoiri Chaibati;L. Izoret
通讯作者：
Weian Yan;D. Bigaud;Nadare Matoiri Chaibati;L. Izoret
影响因子：
1.2
作者：
M. Quiertant;K. Benzarti;J. Schneider;Fabrice Landrin;Mathieu Landrin;F. Boinski
通讯作者：
M. Quiertant;K. Benzarti;J. Schneider;Fabrice Landrin;Mathieu Landrin;F. Boinski