Abstract This paper presents a study on stochastic evaluation of leakages through holes in wrinkle networks of composite liners. The statistical parameters of wrinkles are used as indexes to describe the spatial distributions of wrinkles in a wrinkle network and the wrinkle density is modeled as a random field in the proposed approach, which allows the construction of a database about how wrinkles may be distributed in different conditions and provides input parameters for leakage evaluation at the design stage when the site has not been constructed yet and the aerial image of the wrinkle network (AWN) is unavailable. Statistical analyses were performed on wrinkle geometric parameters and wrinkle density of wrinkles from three sites reported in the literature. The procedures of generating random wrinkle networks (RWNs) based on the statistical parameters of wrinkles are introduced. The proposed approach was applied to typical examples and showed sufficient accuracy when compared to the evaluated leakages based on the corresponding AWNs. Wrinkle density is recommended to be modeled as random field.

中文翻译：

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复合材料内衬皱纹网络孔渗漏的随机评估

摘要 本文介绍了对复合材料内衬皱纹网络中通孔泄漏的随机评估研究。皱纹的统计参数被用作描述皱纹网络中皱纹空间分布的指标，并且在所提出的方法中将皱纹密度建模为一个随机场，这允许构建关于皱纹如何在不同部位分布的数据库。在场地尚未建成且皱纹网络 (AWN) 的航拍图像不可用时，在设计阶段为泄漏评估提供输入参数。对文献中报道的三个部位的皱纹几何参数和皱纹密度进行了统计分析。介绍了基于皱纹统计参数生成随机皱纹网络（RWNs）的过程。所提出的方法应用于典型示例，与基于相应 AWN 的评估泄漏相比，显示出足够的准确性。建议将皱纹密度建模为随机场。