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Proceedings Paper

Application of acoustography for the ultrasonic NDE of aerospace composites
Author(s): Andrew Bond-Thorley; Honghui Wang; Jaswinder S. Sandhu
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Paper Abstract

A series of epoxy carbon fiber development panels manufactured as part of a BAE SYSTEMS, Airbus, Composite Wing Development program were evaluated using Acoustography, a new ultrasonic Non Destructive Evaluation (NDE) method being developed by Santec Systems Inc, as an alternative to the conventional point-by-point ultrasonic C-scan. This study provides details on a novel wide area Acousto-optic (AO) sensor that can be used to nondestructively evaluate materials and components in near real-time. A description of the technology and how it compares to conventional ultrasonic methods is provided. The results of 4 experiments are also provided. The first experiment involves performing ultrasonic and Acoustography tests on thick graphite/epoxy composite panels that have embedded inclusions of known sizes. The objective of this experiment is to determine if the capabilities (i.e. resolution) of Acoustography are comparable to those of conventional ultrasonic techniques. The second experiment involves applying ultrasonics and Acoustography to evaluate a 10 mm thick graphite/epoxy composite panel containing defects associated with the manufacturing process. The third and fourth experiments detail the inspection of complex shaped composite parts representative of aerospace applications. Effort has been conducted towards demonstrating the effectiveness of the technology and establishing a baseline for projected inspection times.

Paper Details

Date Published: 13 May 2000
PDF: 12 pages
Proc. SPIE 3993, Nondestructive Evaluation of Aging Materials and Composites IV, (13 May 2000); doi: 10.1117/12.385503
Show Author Affiliations
Andrew Bond-Thorley, BAE Systems (United Kingdom)
Honghui Wang, Santec Systems, Inc. (United States)
Jaswinder S. Sandhu, Santec Systems, Inc. (United States)

Published in SPIE Proceedings Vol. 3993:
Nondestructive Evaluation of Aging Materials and Composites IV
George Y. Baaklini; Carol A. Nove; Eric S. Boltz, Editor(s)

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