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Analysis of the cause of crack in UAV through the microstructure analysis
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미세조직 분석을 통한 무인항공기 크랙 원인 분석

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Type
Academic journal
Author
Dae Han Kim (국방기술품질원) Ju Hwan Kang (국방기술품질원)
Journal
Korea Academy Industrial Cooperation Society Journal of the Korea Academia-Industrial cooperation Society Vol.24 No.7 KCI Accredited Journals
Published
2023.7
Pages
208 - 214 (7page)
DOI
10.5762/KAIS.2023.24.7.208

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Analysis of the cause of crack in UAV through the microstructure analysis
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Unmanned aircraft vehicles (UAVs) can be classified into fixed-wing, rotary-wing, tilt-rotor, co-axial, and multi-copter according to the type of flight method. UAVs are also used widely in the ongoing war between Ukraine and Russia, with fixed-wing UAVs mainly used. The advantage of fixed-wing UAVs is that they can operate longer hours and longer distances than other types of UAV. On the other hand, the commercial part mainly uses multi-copter UAVs. They are easy to fly and do not need a runway to take off and land. This study examined crack defects in engine hubs in fixed-wing UAVs. The defect was found during a pre-check to operate the UAV. The cause of cracks was examined through microstructure analysis. Microstructural analysis used optical microscopy and scanning electron microscopy, and the shape and propagation mechanism of the crack was confirmed. Initially, micro-cracks appeared in a disconnected shape, and the final fracture occurred when the cracks combined. In addition, there was a difference in shape and fraction between the intermetallic compound of a defective specimen and the non-defective specimen. Based on these results, the management of raw material components is necessary. The result of this study is expected to help develop UAVs in the future.
#UAV #Crack #Fixed Wing #Microstructure #Engine Hub

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2. 본론
3. 결론
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H.J. Ahn, “A Study of Civil Unmanned Aerial System Category Classification”, J. of The Korean Society for Aeronautical and Space Sciences , Vol.43, No.7, pp.657-667, 2015. DOI: http://dx.doi.org/10.5139/JKSAS.2015.43.7.657 google schola S.R. Jeong, S.M. LEE, "Research onquality improvement of damper assembly for unmanned aerial vehiclesystem launch machine", Journal ofthe Korea Academia-Industrial Cooperation Society , Vol.24, No.4, pp. 458-464, 2023 DOI: https://doi.org/10.5762/KAIS.202 google schola S.R. Jeong, "A Study of SmallUAV Throwing Take Off Standard Setting", Journal ofthe Korea Academia-Industrial Cooperation Society, Vol.24, No.4, pp. 458-464, 2023 DOI: https://doi.org/10.5762/KAIS.2022.23.11.86 google schola J.H. Jeong, H.S. Myung, D.W. Kim, H.S. Lim “Design of Decentralized Guidance Algorithm for Swarm Flight of Fixed-Wing Unmanned Aerial Vehicles”, J. Korean Soc. Aeronaut. Space Sci , Vol.49, No.12, pp.981-988, 2021. DOI: https://doi.org/10.5139/JKSAS.2021. google schola H.J. Kim, “Effect of Sc, Sr Elements on Eutectic Mg2Si Modification and Castability of Al-4wt%Mg-0.9wt%Si-0.3wt%Mn-0.15wt%Fe Casting Alloy”, Journal of Korea Foundry Society , Vol.35, No.6, pp.147-154, 2015. DOI: http://dx.doi.org/10.7777/jkfs.2015.35.6.1 google schola

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