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Active Thermography Inspection of Water Ingress into the Sandwich Structure of an Helicopter Blade

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG43__%2F24%3A00560260" target="_blank" >RIV/60162694:G43__/24:00560260 - isvavai.cz</a>

  • Výsledek na webu

    <a href="http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=10171240" target="_blank" >http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=10171240</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1109/ICMT58149.2023.10171262" target="_blank" >10.1109/ICMT58149.2023.10171262</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Active Thermography Inspection of Water Ingress into the Sandwich Structure of an Helicopter Blade

  • Popis výsledku v původním jazyce

    Water ingress into the sandwich structures of aircraft components is a relatively common issue of even modern aircraft. Considering the variety of conditions of operation of SAR helicopter systems, a combination of moisture and water ingress into the critical structures is very likely - with a rotor blade partially manufactured from the sandwich structure being the most exposed. The water ingress can lead to the degradation of mechanical properties, but also the change of mass, and, especially for rotors, balance problems. This paper presents the results of active thermography inspections of controlled water ingress into the cells of the aluminum honeycomb/aluminum face-sheets sandwich structure with external thermal stimulation via halogen lamps. The ability of the active thermography inspection to detect water ingress of selected volumes is assessed. Additional factors impacting the sensitivity of the active thermography inspection, such as the position of the rotor blade, and duration of the heating pulse, are explored as well. Furthermore, the thermal pulse generated by rapid cooling as opposed to the heating of the tested specimen was tested. The resulting thermal contrast was evaluated by a principal component analysis. Active thermography inspection proved to yield excellent results for moisture/water ingress, assuming some defined criteria are met.

  • Název v anglickém jazyce

    Active Thermography Inspection of Water Ingress into the Sandwich Structure of an Helicopter Blade

  • Popis výsledku anglicky

    Water ingress into the sandwich structures of aircraft components is a relatively common issue of even modern aircraft. Considering the variety of conditions of operation of SAR helicopter systems, a combination of moisture and water ingress into the critical structures is very likely - with a rotor blade partially manufactured from the sandwich structure being the most exposed. The water ingress can lead to the degradation of mechanical properties, but also the change of mass, and, especially for rotors, balance problems. This paper presents the results of active thermography inspections of controlled water ingress into the cells of the aluminum honeycomb/aluminum face-sheets sandwich structure with external thermal stimulation via halogen lamps. The ability of the active thermography inspection to detect water ingress of selected volumes is assessed. Additional factors impacting the sensitivity of the active thermography inspection, such as the position of the rotor blade, and duration of the heating pulse, are explored as well. Furthermore, the thermal pulse generated by rapid cooling as opposed to the heating of the tested specimen was tested. The resulting thermal contrast was evaluated by a principal component analysis. Active thermography inspection proved to yield excellent results for moisture/water ingress, assuming some defined criteria are met.

Klasifikace

  • Druh

    D - Stať ve sborníku

  • CEP obor

  • OECD FORD obor

    20304 - Aerospace engineering

Návaznosti výsledku

  • Projekt

  • Návaznosti

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Ostatní

  • Rok uplatnění

    2023

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název statě ve sborníku

    2023 9th International Conference on Military Technologies, ICMT 2023 - Proceedings

  • ISBN

    979-8-3503-2568-3

  • ISSN

  • e-ISSN

  • Počet stran výsledku

    6

  • Strana od-do

    1-6

  • Název nakladatele

    Institute of Electrical and Electronics Engineers Inc.

  • Místo vydání

  • Místo konání akce

    Brno, Czech Republic

  • Datum konání akce

    23. 5. 2023

  • Typ akce podle státní příslušnosti

    WRD - Celosvětová akce

  • Kód UT WoS článku