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使用基于概率的超声波非互惠性对厚复合材料中的纤维波状的成像,具有未知的材料特性

Zhen Zhang¹, Andong Cao¹, Qian Li¹

¹School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China.

Materials (Basel, Switzerland)

|May 27, 2023

概括

这项研究引入了一种新的超声波方法,用于在厚厚的复合材料中成像纤维波动,即使有空隙. 该技术利用超声波非互惠性来改进制造和结构完整性的评估.

科学领域:

材料科学材料科学材料科学
非破坏性测试不破坏性测试
复合材料制造业复合材料制造业

背景情况:

纤维波动性和厚厚复合材料中的空隙可能导致结构失灵.
当前的成像方法可能会在厚厚的,多孔的材料中扎.

研究的目的:

开发和验证一种新的超声波成像技术,用于检测厚复合材料中的纤维波动性.
研究波形复合结构中导致超声波非互惠的潜在机制.

主要方法:

数字和实验研究采用分相阵列探针来测量超声波非互惠性.
时间频率分析,以了解波动性和波传播之间的关系.
开发一种基于概率的成像诊断算法.

主要成果:

超声波非互惠性被确定为纤维波动性的关键指标,由纤维角度梯度引起.
在厚厚的复合材料中成功成像纤维波动性,无论存在空隙.
优化探头元素数量和激发电压被确定为有效的成像.

结论:

拟议的超声波非互惠方法为在厚复合材料中成像纤维波动性提供了强大的方法.
这种技术为超声波成像提供了一项新功能,有可能改善制造工艺,而不需要先前的异构性数据.

关键词:

缺陷的表征缺陷的表征纤维纤维的波浪性波浪性阶段式数组数组是一个阶段式数组数组.多孔性多孔性超声波测试超声波测试超声波测试

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