Application of material analysis and eddy current conductivity tests to aircraft accident investigation
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Application of material analysis and eddy current conductivity tests to aircraft accident investigation
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Engineering Failure Analysis
ISSN
1350-6307
e-ISSN
1873-1961
Volume of the periodical
56
Issue of the periodical within the volume
October 2015
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
7
Pages from-to
422-428
UT code for WoS article
000361832300042
EID of the result in the Scopus database
2-s2.0-84941997819