Kwonwoo PARK, Hoyoung SHIN, Dongjun HONG, Hyunseok KO, Jinhwe KWEON, Youngwoo NAM, Byeongsu KWAK
DOI Number: XXX-YYY-ZZZ
Conference number: HiSST-2024-183
In this study, a microwave absorbing structure that can implement stealth performance in a hypersonic environment was proposed. Basalt fiber and aluminosilicate with excellent heat resistance were selected to manufacture microwave absorbing structures, and nickel electroless coating was performed on basalt fiber to modify electromagnetic properties. Using CST-MWS, an electromagnetic field commercial program, a microwave absorbing structure was designed in the X-Band (8.2 – 12.4 GHz), and a microwave absorbing structure was manufactured through the autoclave process. The prepared specimen was evaluated by measuring the mechanical properties and microwave absorption performance in room temperature and ultra-high temperature environments. As the temperature increased, the microwave absorption performance decreased, but the absorption performance did not change significantly. It was also confirmed that the compressive strength increased as the amount of KOH mol constituting the geopolymer increased.