Fibre direction and stacking sequence measurement in carbon fibre composites using Radon transforms of ultrasonic data
Fibre direction and stacking sequence measurement in carbon fibre composites using Radon transforms of ultrasonic data
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DOI：
10.1016/j.compositesa.2018.12.009
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发表时间：
2019-03-01
影响因子：
8.7
通讯作者：
Smith, R. A.
中科院分区：
文献类型：
--
作者：
Nelson, L. J.;Smith, R. A.
堆叠顺序和更一般地，纤维取向是纤维复合材料中的关键参数，因为它们决定机械性能。本文提出了一种基于超声脉冲回波无损检测技术的单向碳纤维复合材料铺层顺序的检测方法。在平面内的纤维取向的测量使用拉东变换方法应用于局部2D图像提取的3D数据集形成的脉冲回波响应的2D扫描。将这些局部2D图像与被评估区域中的层片对齐的能力使得该技术即使在存在面外层片起皱的层压材料中也适用。氡变换方法示出，以提供可解释的堆叠序列图，允许铺层铺设序列和平面内波纹度和平面外波纹被可视化和量化。
Stacking sequence and, more generally, fibre orientation, are critical parameters in fibrous composite materials since they govern mechanical performance. This paper presents a method, based on the ultrasonic pulse-echo non-destructive technique, that can map the stacking sequence in unidirectional carbon-fibre composites. In plane fibre orientation is measured using a Radon-transform method applied to local 2D images extracted from the 3D dataset formed from a 2D scan of pulse-echo responses. The ability to align these local 2D images to the plies in the region being assessed makes this technique suitable even in laminates where out-of-plane ply wrinkling is present. The Radon-transform method is shown to provide interpretable stacking-sequence maps, allowing ply lay-up sequence and both in-plane waviness and out-of-plane wrinkling to be visualised and quantified.