Recently, steel dampers are widely used as seismic reinforcement devices. Steel dampers have the advantage of being easy to manufacture and being able to absorb a lot of energy through stable hysteresis behavior. However, there is a possibility that the steel damper may be damaged due to fatigue caused by repeated seismic loads. In this study, the seismic performance of steel slit dampers and engineering plastic slit dampers with different physical characteristics were compared and analyzed. It can be seen that the yield load of the steel slit damper, which has relatively high rigidity, is much larger than that of the engineering plastic slit damper. Therefore, the engineering plastic damper is more effective when applied to a structure that experiences a large displacement rather than a structure that experiences a large load.

Abstract
1. 서론
2. 엔지니어링 플라스틱 특성
    2.1 엔지니어링 플라스틱의 적용
    2.2 슬릿댐퍼의 물성치
3. EP 슬릿댐퍼의 성능실험
    3.1 실험체 설계
    3.2 하중 프로토콜
4. 슬릿댐퍼 성능실험 결과
    4.1 EPSD의 하중-변위 이력곡선
    4.2 SPSD의 하중-변위 이력곡선
    4.3 슬릿댐퍼의 하중-변위 이력곡선 비교
5. 결론
감사의 글
References

• 김기철(서일대학교 건축공학과 교수) | Kim Gee-Cheol (School of Architecture, Seoil University)
• 김유성(㈜허브구조엔지니어링, 책임연구원) | Kim Yu-Seong (Hub Structural Engineering Ltd,) Corresponding author