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An experimental investigation on the bedding-in behavior of synthetic fiber ropes

机译：合成纤维绳嵌入行为的实验研究

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The bedding-in process of synthetic fiber ropes such as polyester, nylon, aramid and HMPE is of vital importance to experimental research and engineering application. In the present work, several important topics are systematically investigated by utilizing an experimental setup for cyclic loading tests of synthetic fiber ropes. These topics include the effects of bedding-in level on rope properties, a quantitative method for determining the bedding-in level of ropes and the main factors of influencing the bedding-in level. First, effects of the bedding-in level on properties of synthetic fiber ropes are investigated. A quantitative method for determining the bedding-in level is first proposed by utilizing the tension-strain curve of static tensile tests for synthetic fiber ropes based on the concept of bedding-in. This method is conducive to accurate comparison and evaluation of the elongation data obtained from different guidelines for synthetic fiber mooring ropes. Second, effects of the mean load, loading amplitude and loading cycles on the bedding-in level of HMPE and polyester ropes are systematically investigated. Based on measured data, the recommended method for determining the bedding-in procedure is proposed for synthetic fiber mooring ropes. Furthermore, an empirical expression that takes into account both the mean load, loading amplitude and number of loading cycles is proposed, which is the only one that can quantitatively evaluate the bedding-in level of fiber ropes under previous cyclic loading. The present work is of great necessity and benefit to capturing the loading history behavior and failure mechanism of synthetic fiber ropes, and also to designing convenient bedding-in procedures that are required for the installation of synthetic fiber mooring ropes.
机译：合成纤维绳（例如聚酯，尼龙，芳纶和HMPE）的包埋工艺对于实验研究和工程应用至关重要。在当前的工作中，通过利用用于合成纤维绳的循环载荷测试的实验装置，系统地研究了几个重要主题。这些主题包括嵌入度对绳索性能的影响，确定绳索嵌入度的定量方法以及影响嵌入度的主要因素。首先，研究了垫入量对合成纤维绳性能的影响。首先根据嵌入概念，利用合成纤维绳的静态拉伸试验的拉伸应变曲线，提出了一种确定嵌入水平的定量方法。这种方法有利于准确比较和评估从合成纤维系泊绳的不同指南获得的伸长率数据。其次，系统地研究了平均载荷，载荷幅度和载荷循环对HMPE和聚酯绳的嵌入水平的影响。根据实测数据，提出了用于确定合成纤维系泊绳的推荐嵌入方法的推荐方法。此外，提出了一种将平均载荷，载荷幅度和载荷循环次数都考虑在内的经验表达式，这是唯一可以定量评估先前循环载荷下纤维绳的下入水平的表达式。当前的工作非常有必要，并且有利于捕获合成纤维绳的加载历史行为和破坏机理，以及设计安装合成纤维系泊绳所需的便利的嵌入程序。

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