Abstract

To characteristic tensile behavior of woven fabric and identify tensile failure mechanism is still a challenging work. In this paper, a new acoustic emission-based method is applied for the characterization of textile fracture mechanism. A set of acoustic emission signal acquisition devices was used to collect the acoustic emission signals, which is equipped on the electronic fabric strength tester during stretching. The proposed Hilbert-Huang Transform processing method was developed to identify the acoustic characteristics of collected unsteady acoustic emission signals of the woven fabric, which can be used to describe both time and frequency information. The experimental results demonstrate that acoustic emission signal is affected by orthogonal friction between warp and weft yarns rather than the fabric structure.

摘要

表征机织物的拉伸行为并确定拉伸失效机制仍然是一项具有挑战性的工作。在本文中，一种新的基于声发射的方法被应用于纺织品断裂机制的表征。一套声发射信号采集装置用于采集声发射信号，该装置配备在拉伸过程中的电子织物强力测试仪上。提出的 Hilbert-Huang 变换处理方法用于识别收集到的机织织物非稳态声发射信号的声学特性，可用于描述时间和频率信息。实验结果表明，声发射信号受经纬纱正交摩擦的影响而不是受织物结构的影响。