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Geotextiles can be successfully employed for any geotechnical application when they are able to sustain pre-defined levels of tensile stresses. The biaxial tensile test has an advantage over other tensile test methods in that it does not allow “necking” during deformation which simulates the operational conditions of geotextiles under confined stresses. In this study, the model for uniaxial tensile behavior of nonwovens has been modified to investigate the biaxial tensile behavior of spunbonded geotextiles. The model has included the effect of fiber re-orientation, stress-strain behavior of constituent fibers, and physical characteristics of nonwovens when the geotextile specimen is laterally constrained. A comparison is made between predicted and experimental stress-strain curves obtained from previous work (Bais-Singh and Goswami, 1998). Theoretical findings of biaxial tensile behavior obtained using the layer theory are also critically discussed. In addition, it has been revealed that fiber re-orientation is a key factor in translating the random spunbonded nonwoven geotextiles to anisotropic structures under defined biaxial tensile stresses. 相似文献
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介绍了国产聚酯纺粘针刺非织造布生产线生产调试过程中的两个关键问题，说明了调试过程关键问题的解决办法。 相似文献
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本文结合生产实践，阐述了纺粘法非织造布生产中不同原料和不同生产条件对纺丝效果的影响，提出了在不同生产条件下应选择合理的工艺条件和最佳参数，以生产出高质量的产品。 相似文献
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概述了美国IDEA07展会的情况,介绍了展会上展出的纺粘、熔喷法非织造布的新技术. 相似文献
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针对目前大多数纺粘法生产线对设备冷却用水的水质没有给予足够的重视,有的直接利用不符合冷却水水质要求的自来水或深井水（地下水）作为设备岭却用水的问题,对纺粘法生产线设备冷却用水质要求进行了探讨。 相似文献
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PET／PA6复合纺粘水刺法非织造布是一种将复合纤维、纺粘及水刺技术结合的新型产品。通过对产品性能的测试,论述了复合纤维纺粘水刺超细纤维非织造布的结构及性能特点。 相似文献