Accompanied with the industrial development, and enlarging and heightening buildings, building equipments are also enlarging. These changes are serious to the cause of structure noises. The Floating Floor System which uses the soft foam polyurethane are becoming popular in construction areas for its short construction period and well vibration proof ability, hence it is becoming wide in the marketing volume. We were able to enhance the physical characteristics of the vibration proof polyurethane mat with this study. As a result, we were also able to secure material competitiveness by meeting the requirements of customer satisfaction through enhancement in estimated material lifetime and physical characteristics.

Abstract
 1. 서론
 2. 이론적 배경
  2.1 폴리우레탄 방진매트
  2.2 가속수명시험 설계
 3. 개선과정과 결과분석
  3.1 고장유형분석과 가속수명시험
  3.2 공정개선
  3.3 폴리우레탄매트의 물리적 특성 결과분석
  3.4 공정개선 후 고장건수의 변화
 4. 결론 및 향후 연구 과제
 5. 참 고 문 헌

• 우경하(인하대학교 산업경영공학과) | Kyung-Ha Woo
• 이창호(인하대학교 산업경영공학과) | Chang-Ho Lee