The K2 tank not only has excellent mobility but also has excellent protection performance. Armor steel is used to provide structural protection, and the turret structure is made of rolled homogeneous armor (RHA) plates. Most processes for fabricating structures involve welding, but RHA steel has the problem of being susceptible to thermal deformation. To compensate for this, a plan to apply the bending method was considered. In this study, prior to applying the bending method to an actual vehicle, mechanical property evaluations were performed on materials, welding, and bending specimens. It has been proven that the bending method can achieve performance equivalent to or better than the welding method. The verification tests included hardness tests, tensile tests, fatigue tests, and impact tests. All tests except the impact test confirmed that the bending method was superior to the welding method. In the case of the impact test, the impact value of the bending method was lower, but it satisfied the standard with a value higher than the minimum requirement according to the standard, so it is judged that there will be no problem in applying the bending method.

Abstract
1. 서 론
2. 본 론
    2.1 시험 선정
    2.2 시험 수행 및 결과
    2.3 변경 전후 구조 강도 검토
3. 결 론
References

• 김윤곤(Defense Agency for Technology and Quality) | Yungon Kim Corresponding author
• 권유나(Defense Agency for Technology and Quality) | Yuna Kwon
• 오은빈(Defense Agency for Technology and Quality) | Eunbin Oh
• 정연호(Hyundai-Rotem) | Yunho Jung