类板结构多重冲击点的自适应估计与跟踪算法

IF 1 4区材料科学 Q3 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Research in Nondestructive Evaluation Pub Date : 2020-01-02 DOI:10.1080/09349847.2019.1617913

E. Dris, R. Drai, M. Bentahar, D. Berkani

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引用次数: 4

摘要

摘要:本文提出了一种连续跟踪作为声发射源的多个碰撞的连续运动的概率方法。考虑海森堡不确定度引起的系统误差，采用连续小波变换(CWT)分析确定不同声发射命中的到达时间。然后，应用扩展卡尔曼滤波(EKF)同时估计出特定频率下兰姆波的冲击点位置和群速度;为了验证所提出的概率方法的性能，包括建模误差和测量噪声的不确定性，在铜板上进行了实验，使用铅笔芯断头(PLBs)产生的声发射撞击。测量有助于评估所提出的方法的鲁棒性，从而在工业部件和结构的结构健康监测中具有潜在的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Adaptive Algorithm for Estimating and Tracking the Location of Multiple Impacts on a Plate-Like Structure

ABSTRACT This paper presents a probabilistic approach to continuously track the sequential movement of the multiple impacts considered as acoustic emission (AE) sources. Continuous wavelet transform (CWT) analysis is used to determine the time of arrival (TOA) of the different AE hits by taking into account systematic errors due to the Heisenberg uncertainty. Then, the Extended Kalman Filter (EKF) is applied to simultaneously estimate the locations of impact points and the group velocity of the involved Lamb waves at a specific frequency. To validate the performance of the proposed probabilistic approach, including uncertainties from modeling error and measurement noise, experiments on a copper panel are performed using AE hits generated by Pencil-Lead Breaks (PLBs). Measurements help appreciate robustness of the proposed approach with consequent potential applications in structural health monitoring of industrial parts and structures.

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来源期刊

Research in Nondestructive Evaluation 工程技术-材料科学：表征与测试

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Research in Nondestructive Evaluation® is the archival research journal of the American Society for Nondestructive Testing, Inc. RNDE® contains the results of original research in all areas of nondestructive evaluation (NDE). The journal covers experimental and theoretical investigations dealing with the scientific and engineering bases of NDE, its measurement and methodology, and a wide range of applications to materials and structures that relate to the entire life cycle, from manufacture to use and retirement. Illustrative topics include advances in the underlying science of acoustic, thermal, electrical, magnetic, optical and ionizing radiation techniques and their applications to NDE problems. These problems include the nondestructive characterization of a wide variety of material properties and their degradation in service, nonintrusive sensors for monitoring manufacturing and materials processes, new techniques and combinations of techniques for detecting and characterizing hidden discontinuities and distributed damage in materials, standardization concepts and quantitative approaches for advanced NDE techniques, and long-term continuous monitoring of structures and assemblies. Of particular interest is research which elucidates how to evaluate the effects of imperfect material condition, as quantified by nondestructive measurement, on the functional performance.