In various machines used in industrial sites and transportation equipment, fastening structures of bolts and nuts are widely employed. However, conventional Steel sockets, classified as non-explosion-proof materials, have a high likelihood of generating sparks due to friction with components, which can lead to explosions or large-scale fires. To address this issue, this study developed a lightweight explosion-protection socket using AL-7075-T6 aluminum alloy, which is known for its excellent explosion-proof properties. However, due to the inherent characteristics of aluminum, it has lower rigidity compared to Steel, requiring the use of more expensive alloy materials. Therefore, our research team utilized Finite Element Analysis (FEA) and Multi-Objective Genetic Algorithm (MOGA) to optimize the mass and safety factor of the socket, proposing a design that simultaneously achieves both weight reduction and structural stability. The socket developed in this study is approximately 30% lighter than traditional Steel-based sockets while maintaining a safety factor of 1.2 or higher, significantly enhancing operational safety in explosive environments. This research sets a new standard in the design and manufacturing process of explosion-proof sockets and is expected to contribute to the optimization of various explosion-proof equipment in the future.

Abstract
1. 서 론
2. 기존 방폭 렌치 소켓의 구조해석
    2.1 유한 요소 모 델
    2.2 전산 구조해석 결과
3. MOGA를 이용한 최적 설계
    3.1 최적 설계 과정
    3.2 최적 설계 결과
4. 토크부하시험을 통한 강도 성능 분석
    4.1 시험 환경
    4.2 시험 결과
5. 결 론
후 기
References

• 김지웅(graduate student, Dept. of Aerospace Engineering, Sunchon National Univ.) | Jiwoong Kim
• 이희남(Dept. of Mechanical & Aerospace Eng., Aerospace Research Center, Sunchon National Univ.) | Huinam Rhee Corresponding author
• 장상빈(undergraduate student, Dept. of Mechanical and Aerospace Engineering, Sunchon National Univ.) | Sangbin Jang
• 박현성(Engineer, BoltingMaster Inc.) | Hyunseong Park