Guided Wave Energy Trapping to Detect Hidden Multilayer Delamination Damage

被引：20

作者：

Leckey, Cara A. C. ^{[1
]}

Seebo, Jeffrey P. ^{[2
]}

机构：

[1] NASA, Langley Res Ctr, Nondestruct Evaluat Sci Branch, Hampton, VA 23665 USA

[2] NASA, Langley Res Ctr, Analyt Mech Associates, Hampton, VA 23665 USA

来源：

41ST ANNUAL REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOL 34 | 2015年 / 1650卷

关键词：

COMPOSITES;

D O I：

10.1063/1.4914726

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Nondestructive Evaluation (NDE) and Structural Health Monitoring (SHM) simulation tools capable of modeling three-dimensional (3D) realistic energy-damage interactions are needed for aerospace composites. Current practice in NDE/SHM simulation for composites commonly involves over-simplification of the material parameters and/or a simplified two-dimensional (2D) approach. The unique damage types that occur in composite materials (delamination, microcracking, etc) develop as complex 3D geometry features. This paper discusses the application of 3D custom ultrasonic simulation tools to study wave interaction with multilayer delamination damage in carbon-fiber reinforced polymer (CFRP) composites. In particular, simulation based studies of ultrasonic guided wave energy trapping due to multilayer delamination damage were performed. The simulation results show changes in energy trapping at the composite surface as additional delaminations are added through the composite thickness. The results demonstrate a potential approach for identifying the presence of hidden multilayer delamination damage in applications where only single-sided access to a component is available. The paper also describes recent advancements in optimizing the custom ultrasonic simulation code for increases in computation speed.

引用

页码：1162 / 1169

页数：8

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