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