Geotextiles are widely used as reinforcing elements in many geotechnical engineering applications such as mechanically stabilized earth walls, reinforced soil slopes, capping of high-water content clays in landfills, reinforced embankments for railways and roadways, and so on. The ultimate strength of geotextile is obtained from the load-displacement plot; however, the failure mechanism evaluation of local displacement is crucial to understand the serviceability state. In the present study, the image-based deformation measurement technique is used to evaluate the local displacement within geotextile at different locations during the wide-width tensile test. Further, the load-displacement plots are obtained for different geotextiles and a comparison is made between the measured displacements from the instruments and through an image-based deformation measurement technique. Additionally, the strength of geotextiles with imbibed defects at different orientations and corresponding failure patterns is investigated. The imbibed defect in geotextile is in the form of slits having orientations varied as vertical, horizontal, and inclined with respect to the loading direction. It has been observed that geotextile with vertical slit has the highest strength, followed by geotextile with inclined and horizontal slits. The present study results provide insight into the variation in the strength and displacement field of geotextiles having defects.

中文翻译：

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通过图像分析观察完整土工布和有缝土工布的拉伸测试

土工织物广泛用作许多岩土工程应用中的增强元件，例如机械稳定土墙、加筋土坡、垃圾填埋场高含水量粘土的封盖、铁路和公路的加筋路堤等。土工布的极限强度由荷载-位移图得出；然而，局部位移的失效机制评估对于了解使用状态至关重要。在本研究中，基于图像的变形测量​​技术用于评估宽幅拉伸试验期间土工布内不同位置的局部位移。此外，获得了不同土工织物的载荷-位移图，并对仪器测量的位移和基于图像的变形测量​​技术进行了比较。此外，还研究了不同方向上具有吸入缺陷的土工织物的强度和相应的失效模式。土工织物中的吸水缺陷呈狭缝形式，其方向变化为垂直、水平和相对于加载方向倾斜。据观察，具有垂直缝隙的土工织物强度最高，其次是具有倾斜和水平缝隙的土工织物。本研究结果提供了对有缺陷的土工织物强度和位移场变化的深入了解。