Detecting water ingress in aviation honeycomb panels: Qualitative and quantitative aspects

Abstract

We have used infrared thermography to study water trapped in aviation honeycomb panels, namely: 1) possibility of quantitative evaluation of trapped water, 2) influence of honeycomb panel orientation on the efficiency of water detection, and 3) discrimination between honeycomb cells filled with water and adhesive. It is shown, both theoretically and experimentally, that it is difficult for TNDT to discriminate between the presence of water and epoxy trapped in honeycomb cells, by analyzing only the surface temperature patterns. It has been demonstrated that water trapped in honeycomb cells can be reliably detected by an increase in effusivity starting from the inflection time. This process is referred to as the “concept of apparent effusivity”.

Original language	English
Pages (from-to)	270-280
Number of pages	11
Journal	Polymer Testing
Volume	54
DOIs	https://doi.org/10.1016/j.polymertesting.2016.07.023
Publication status	Published - 1 Sep 2016

Keywords

Active thermal nondestructive testing
Effusivity evaluation
Honeycomb structure
Water ingress

ASJC Scopus subject areas

Polymers and Plastics
Organic Chemistry

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10.1016/j.polymertesting.2016.07.023

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title = "Detecting water ingress in aviation honeycomb panels: Qualitative and quantitative aspects",

abstract = "We have used infrared thermography to study water trapped in aviation honeycomb panels, namely: 1) possibility of quantitative evaluation of trapped water, 2) influence of honeycomb panel orientation on the efficiency of water detection, and 3) discrimination between honeycomb cells filled with water and adhesive. It is shown, both theoretically and experimentally, that it is difficult for TNDT to discriminate between the presence of water and epoxy trapped in honeycomb cells, by analyzing only the surface temperature patterns. It has been demonstrated that water trapped in honeycomb cells can be reliably detected by an increase in effusivity starting from the inflection time. This process is referred to as the “concept of apparent effusivity”.",

keywords = "Active thermal nondestructive testing, Effusivity evaluation, Honeycomb structure, Water ingress",

author = "Vladimir Vavilov and Sergio Marinetti and Yangyang Pan and Arseny Olegovich Chulkov",

year = "2016",

month = sep,

day = "1",

doi = "10.1016/j.polymertesting.2016.07.023",

language = "English",

volume = "54",

pages = "270--280",

journal = "Polymer Testing",

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TY - JOUR

T1 - Detecting water ingress in aviation honeycomb panels

T2 - Qualitative and quantitative aspects

AU - Vavilov, Vladimir

AU - Marinetti, Sergio

AU - Pan, Yangyang

AU - Chulkov, Arseny Olegovich

PY - 2016/9/1

Y1 - 2016/9/1

N2 - We have used infrared thermography to study water trapped in aviation honeycomb panels, namely: 1) possibility of quantitative evaluation of trapped water, 2) influence of honeycomb panel orientation on the efficiency of water detection, and 3) discrimination between honeycomb cells filled with water and adhesive. It is shown, both theoretically and experimentally, that it is difficult for TNDT to discriminate between the presence of water and epoxy trapped in honeycomb cells, by analyzing only the surface temperature patterns. It has been demonstrated that water trapped in honeycomb cells can be reliably detected by an increase in effusivity starting from the inflection time. This process is referred to as the “concept of apparent effusivity”.

AB - We have used infrared thermography to study water trapped in aviation honeycomb panels, namely: 1) possibility of quantitative evaluation of trapped water, 2) influence of honeycomb panel orientation on the efficiency of water detection, and 3) discrimination between honeycomb cells filled with water and adhesive. It is shown, both theoretically and experimentally, that it is difficult for TNDT to discriminate between the presence of water and epoxy trapped in honeycomb cells, by analyzing only the surface temperature patterns. It has been demonstrated that water trapped in honeycomb cells can be reliably detected by an increase in effusivity starting from the inflection time. This process is referred to as the “concept of apparent effusivity”.

KW - Active thermal nondestructive testing

KW - Effusivity evaluation

KW - Honeycomb structure

KW - Water ingress

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