Application of acoustography for the ultrasonic NDE of aerospace composites

Andrew Bond-Thorley; Honghui Wang; Jaswinder S. Sandhu

doi:10.1117/12.385503

13 May 2000 Application of acoustography for the ultrasonic NDE of aerospace composites

Andrew Bond-Thorley, Honghui Wang, Jaswinder S. Sandhu

Proceedings Volume 3993, Nondestructive Evaluation of Aging Materials and Composites IV; (2000) https://doi.org/10.1117/12.385503
Event: SPIE's 5th Annual International Symposium on Nondestructive Evaluation and Health Monitoring of Aging Infrastructure, 2000, Newport Beach, CA, United States

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.

Citation Download Citation

Andrew Bond-Thorley, Honghui Wang, and Jaswinder S. Sandhu "Application of acoustography for the ultrasonic NDE of aerospace composites", Proc. SPIE 3993, Nondestructive Evaluation of Aging Materials and Composites IV, (13 May 2000); https://doi.org/10.1117/12.385503

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