Non-destructive testing of moisture ingression in composite honeycomb sandwich structures using the thickness-resonance technique

Kepple, Jendi and Veidt, Martin (2012). Non-destructive testing of moisture ingression in composite honeycomb sandwich structures using the thickness-resonance technique. In: Rikard Benton Heslehurst and Ann Byrne, Composites Australia and CRC-ACS 2012 Conference: Diversity in Composites Conference proceedings. Diversity in Composites 2012 Conference, Leura, NSW, Australia, (1-12). 15-16 March 2012.

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
Author Kepple, Jendi
Veidt, Martin
Title of paper Non-destructive testing of moisture ingression in composite honeycomb sandwich structures using the thickness-resonance technique
Conference name Diversity in Composites 2012 Conference
Conference location Leura, NSW, Australia
Conference dates 15-16 March 2012
Proceedings title Composites Australia and CRC-ACS 2012 Conference: Diversity in Composites Conference proceedings
Place of Publication Hawthorn, Vic., Australia
Publisher Composites Australia
Publication Year 2012
Sub-type Fully published paper
ISBN 9780987328502
Editor Rikard Benton Heslehurst
Ann Byrne
Start page 1
End page 12
Total pages 12
Collection year 2013
Language eng
Formatted Abstract/Summary
Composite sandwich structures are frequently used in airframe structures because of their high
bending stiffness–to–weight ratio and excellent strength properties. Examples include the latest
rotary wing platforms recently commencing service in the Australian Defense Force, the Tiger
Armed Reconnaissance Helicopter (ARH) and the Multi-Role Helicopter 90 (MRH). One
possible damage mode for sandwich components is moisture ingression, which may cause the
structure to deteriorate and lose its load carrying capacity.
This paper describes a non-destructive testing (NDT) method to detect moisture ingress into
honeycomb sandwich structures. The experimental NDT method detailed is the 'Thickness-
Resonance' method. This method detects change in the resonance frequency of the sandwich
structure due to varying levels of moisture ingression.
Three analysis methods were performed: analytical, finite element (FE) and experimental. The
results of the analyses featured a downward linear relationship between the resonance frequency
and the volume of moisture ingress into the structure. There is a good indication that, with
further development, the 'Thickness-Resonance' technique may be used to quantitatively detect
moisture ingress during aircraft maintenance over-hauls.
Keyword Honeycomb sandwich
Moisture ingression
Non-destructive testing
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

 
Versions
Version Filter Type
Citation counts: Google Scholar Search Google Scholar
Created: Wed, 10 Apr 2013, 14:07:05 EST by Rose Clements on behalf of School of Mechanical and Mining Engineering