Determining the fiber/matrix interfacial shear strength under cryogenic conditions by statistical inversion,Polymer Composites

当前位置： X-MOL 学术 › Polym. Compos. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Determining the fiber/matrix interfacial shear strength under cryogenic conditions by statistical inversion
Polymer Composites ( IF 4.8 ) Pub Date : 2020-11-05 , DOI: 10.1002/pc.25837
Xiao‐wen Zhang ₁ , Tong Li ₁ , Cheng Huang ₂ , Qi‐zhong Huang ₃ , Ming‐fa Ren _{1,

4} , Bo Wang _{1,

4}

Affiliation

The fiber/matrix interfacial shear strength (IFSS) in fiber‐reinforced plastics (FRP) under cryogenic condition is critical to the strength of FRP vessels while used in liquid fuel tanks. However, a direct in situ characterization of IFSS in FRPs under cryogenic condition is difficult to be achieved by combining mechanical testing facility and cryogenic oven at microscale. In this article, a new approach is proposed to identify the cryogenic IFSS of FRPs by statistical inversion by using the results of tensile experiments at cryogenic temperatures and morphological characterization of FRPs at room temperature. The failure of unidirectional FRPs is characterized by cryogenic mechanical testing at macroscale, and microscopic morphological analysis is conducted to summarize the statistical characterization of material failures. Based on the mechanical behavior and the statistical distribution of failure modes in the FRPs, statistical inversion technique is employed to estimate the cryogenic IFSS. This method can avoid the difficulties in conducting in situ cryogenic mechanical tests at microscale and achieve a reliable evaluation of cryogenic interfacial properties in FRPs, which improving the evaluation ability of the mechanical performance of FRPs under cryogenic conditions.

中文翻译：

通过统计反演确定低温条件下的纤维/基质界面剪切强度

低温条件下，纤维增强塑料（FRP）中的纤维/基体界面剪切强度（IFSS）对于FRP容器在液体燃料箱中使用时的强度至关重要。然而，在低温条件下，很难通过将机械测试设备和低温烘箱相结合来实现FRP中IFSS的直接原位表征。在本文中，提出了一种新方法，该方法通过利用低温下的拉伸实验结果和室温下FRP的形态表征，通过统计反演来识别FRP的低温IFSS。单向FRP的失效通过宏观的低温机械测试来表征，并进行微观形态分析以总结材料失效的统计特征。基于FRP中的力学行为和失效模式的统计分布，采用统计反演技术估算低温IFSS。该方法可以避免在微观尺度上进行原位低温力学测试的困难，并且可以对FRP中的低温界面性能进行可靠的评估，从而提高了FRP在低温条件下力学性能的评估能力。

更新日期：2021-01-11

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11