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http://dx.doi.org/10.5139/JKSAS.2020.48.2.127

Experimental Study on Dynamic Behavior of a Titanium Specimen Using the Thermal-Acoustic Fatigue Apparatus  

Go, Eun-Su (Department of Aerospace Engineering, Chungnam National University)
Kim, Mun-Guk (Department of Aerospace Engineering, Chungnam National University)
Moon, Young-Sun (Department of Aerospace Engineering, Chungnam National University)
Kim, In-Gul (Department of Aerospace Engineering, Chungnam National University)
Park, Jae-Sang (Department of Aerospace Engineering, Chungnam National University)
Kim, Min-Sung (Agency for Defense Development)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.48, no.2, 2020 , pp. 127-134 More about this Journal
Abstract
High supersonic aircraft are exposed to high temperature environments by aerodynamic heating during supersonic flight. Thermal protection system structures such as double-panel structures are used on the skin of the fuselage and wings to prevent the transfer of high heat into the interior of an aircraft. The thin-walled double-panel skin can be exposed to acoustic loads by supersonic aircraft's high power engine noise and jet flow noise, which can cause sonic fatigue damage. Therefore, it is necessary to examine the behavior of supersonic aircraft skin structure under thermal-acoustic load and to predict fatigue life. In this paper, we designed and fabricated thermal-acoustic test equipment to simulate thermal-acoustic load. Thermal-acoustic testing of the titanium specimen under thermal-acoustic load was performed. The analytical model was verified by comparing the thermal-acoustic test results with the finite element analysis results.
Keywords
Thermal-Acoustic Load; High Supersonic; Thermal Protection System; Titanium Specimen; Sonic Fatigue;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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