Membrane structure is a system that is stabilized by maintaining a tensile state of the membrane material that originally cannot resist the bending or pressure. Also, it is a system that allows the whole membrane structure to bear external loads caused by wind or precipitation such as snow, rain and etc. Tension relaxation phenomenon can transpire to the tension that is introduced to the fabric over time, due to the innate characteristics of the membrane material. Thus, it is important to accurately understand the size of the membrane tension after the completion of the structures, for maintenance and management purposes. The authors have proposed the principle of theoretically and indirectly measuring the tension by vibrating the membrane surface with sound waves exposures against the surface, which is compartmentalized by a rectangular boundary, and by measuring the natural frequency of the membrane surface that selectively resonates. The authors of this paper measured the tension of preexisting membrane structure for its maintenance by using the developed portable measurement equipment. Through analyzing the measurement data, the authors review the points that should be improved and the technical method for the new maintenance system of membrane tension.

1. 서론
 2. 음파를 이용한 막장력 측정장치
  2.1 음파를 이용한 막장력 측정이론
  2.2 All-in-one 포터블 막장력 측정장치
 3. 막구조물 점검에서의 막장력 측정
 4. 고양운동장 막장력 측정
  4.1 고양운동장의 개요
  4.2 막장력 측정 개요
  4.3 막장력 측정 결과
 5. 막구조물의 막장력 유지관리
 6. 결론
 감사의 글
 References

• 진상욱(한국기술교육대학교 디자인·건축공학부 연구교수, 박사(공학)) | Jin Sang-Wook
• 손수덕(한국기술교육대학교 디자인·건축공학부 연구교수, 공학박사) | Shon Su-Deok
• 이승재(한국기술교육대학교 디자인·건축공학부 교수, 공학박사) | Lee Seung-Jae