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Application of material analysis and eddy current conductivity tests to aircraft accident investigation

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00010669%3A_____%2F15%3AN0000012" target="_blank" >RIV/00010669:_____/15:N0000012 - isvavai.cz</a>

  • Výsledek na webu

    <a href="https://www.sciencedirect.com/science/article/pii/S1350630714003744?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1350630714003744?via%3Dihub</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.engfailanal.2014.12.011" target="_blank" >10.1016/j.engfailanal.2014.12.011</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Application of material analysis and eddy current conductivity tests to aircraft accident investigation

  • Popis výsledku v původním jazyce

    Material analysis, such as detection of causes of premature failure, is an integral procedure in solving both manufacturing and in-service problems. The case study presented in this paper describes the material analysis performed in the investigation of the Blaník L13 glider catastrophic accident caused by premature failure of the bottom flange of the right wing spar, which is made of Z 42 4203.62 aluminium alloy (equivalent to AW2024-T3 alloy). Characterization techniques including metallography, light microscopy, optical emission spectroscopy, hardness measurements, tensile testing, and electrical conductivity measurement were used to verify the basic material properties of the damaged flange. Each critical part of an aircraft can be constructed from a specific aluminium alloy whose properties are based on its composition and heat treatment. These properties include electrical conductivity, which is determined by the alloy content and prior processing. An eddy current conductivity test thus allows alloys to be sorted based on the changes in their material properties resulting from different thermal processing. The analysis results of the damaged L13 glider flange were compared with the minimum specified values of mechanical and material properties of other flanges from retired L13 gliders. Different values were obtained for the electrical conductivity and material hardness, indicating that the possible cause of the flange’s premature failure could be an imperfect material heat treatment, or material degradation.

  • Název v anglickém jazyce

    Application of material analysis and eddy current conductivity tests to aircraft accident investigation

  • Popis výsledku anglicky

    Material analysis, such as detection of causes of premature failure, is an integral procedure in solving both manufacturing and in-service problems. The case study presented in this paper describes the material analysis performed in the investigation of the Blaník L13 glider catastrophic accident caused by premature failure of the bottom flange of the right wing spar, which is made of Z 42 4203.62 aluminium alloy (equivalent to AW2024-T3 alloy). Characterization techniques including metallography, light microscopy, optical emission spectroscopy, hardness measurements, tensile testing, and electrical conductivity measurement were used to verify the basic material properties of the damaged flange. Each critical part of an aircraft can be constructed from a specific aluminium alloy whose properties are based on its composition and heat treatment. These properties include electrical conductivity, which is determined by the alloy content and prior processing. An eddy current conductivity test thus allows alloys to be sorted based on the changes in their material properties resulting from different thermal processing. The analysis results of the damaged L13 glider flange were compared with the minimum specified values of mechanical and material properties of other flanges from retired L13 gliders. Different values were obtained for the electrical conductivity and material hardness, indicating that the possible cause of the flange’s premature failure could be an imperfect material heat treatment, or material degradation.

Klasifikace

  • Druh

    J<sub>imp</sub> - Článek v periodiku v databázi Web of Science

  • CEP obor

  • OECD FORD obor

    20501 - Materials engineering

Návaznosti výsledku

  • Projekt

  • Návaznosti

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Ostatní

  • Rok uplatnění

    2015

  • Kód důvěrnosti údajů

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

Údaje specifické pro druh výsledku

  • Název periodika

    Engineering Failure Analysis

  • ISSN

    1350-6307

  • e-ISSN

    1873-1961

  • Svazek periodika

    56

  • Číslo periodika v rámci svazku

    October 2015

  • Stát vydavatele periodika

    NL - Nizozemsko

  • Počet stran výsledku

    7

  • Strana od-do

    422-428

  • Kód UT WoS článku

    000361832300042

  • EID výsledku v databázi Scopus

    2-s2.0-84941997819