Pitch-Catch Ultrasonic Array Characterization of the Hidden Region of Impact Damage in Composites

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

Research in Nondestructive Evaluation Pub Date : 2020-11-01 DOI:10.1080/09349847.2020.1847374

J. Aldrin, J. Wertz, J. Welter, E. Lindgren, N. Schehl, V. Kramb, David Zainey

引用次数: 1

Abstract

ABSTRACT This study explores the application of algorithms with linear array ultrasonic testing for the characterization of hidden regions of impact damage in composites. An idealized ray tracing model was used to demonstrate the sensitivity of transmitted signals to the hidden impact profile, and a numerical model was used to provide insight on the incident field generated by linear array elements. Experimental studies were performed highlighting the differences in the response from no flaw, columnar and trapezoidal profiles. Algorithms were implemented to process full matrix capture data, register pitch-catch signals with the top delamination location and extent, and improve the signal-to-noise through combining multiple pitch-catch acquisitions. Lastly, a classifier was developed and verification testing demonstrated the ability to distinguish four different hidden profiles, indicating the importance of signal registration for successful classification.

查看原文本刊更多论文

复合材料冲击损伤隐藏区域的俯仰捕捉超声阵列表征

摘要:本研究探讨了线性阵列超声检测算法在复合材料冲击损伤隐藏区域表征中的应用。理想的光线追踪模型用于演示传输信号对隐藏撞击剖面的敏感性，并使用数值模型来深入了解线性阵列元素产生的入射场。实验研究强调了无缺陷、柱状和梯形剖面的响应差异。实现了对全矩阵捕获数据的处理算法，将基音捕获信号与顶部分层位置和程度进行寄存器，并通过组合多个基音捕获来提高信噪比。最后，开发了一种分类器，验证测试表明该分类器能够区分四种不同的隐藏轮廓，表明信号配准对成功分类的重要性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.