Fundamentals of Angled-beam Ultrasonic NDE for Potential Characterization of Hidden Regions of Impact Damage in Composites

被引：7

作者：

Aldrin, John C. ^{[2
]}

Wertz, John N. ^{[1
]}

Welter, John T. ^{[1
]}

Wallentine, Sarah ^{[1
]}

Lindgren, Eric A. ^{[1
]}

Kramb, Victoria ^{[3
]}

Zainey, David ^{[3
]}

机构：

[1] US Air Force, Res Lab AFRL RXCA, Wright Patterson AFB, OH 45433 USA

[2] Computat Tools, 4275 Chatham Ave, Gurnee, IL 60031 USA

[3] Univ Dayton, Res Inst, 300 Coll Pk, Dayton, OH 45469 USA

来源：

44TH ANNUAL REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOL 37 | 2018年 / 1949卷

关键词：

D O I：

10.1063/1.5031592

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this study, the use of angled-beam ultrasonic NDE was explored for the potential characterization of the hidden regions of impact damage in composites. Simulated studies using CIVA FIDEL 2D were used to explore this inspection problem. Quasi-shear (qS) modes can be generated over a wide range of angles and used to reflect off the backwall and interrogate under the top delaminations of impact damage. Secondary probe signals that do propagate normal to the surface were found to be significant under certain probe conditions, and can potentially interfere with weakly scattered signals from within the composite panel. Simulations were used to evaluate the source of the multiple paths of reflections from the edge of a delamination; time-of-flight and amplitude will depend on the depth of the delamination and location of neighboring delaminations. For angled-beam inspections, noise from both the top surface roughness and internal features was found to potentially mask the detection of signals from the edge of delaminations. Lastly, the study explored the potential of generating "guided" waves along the backwall using an angled-beam source and subsequently measuring scattered signals from a far surface crack hidden under a delamination.

引用

页数：10

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43RD REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, 2017, 1806

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