한국철도학회:학술대회논문집 (Proceedings of the KSR Conference)
- 한국철도학회 2009년도 춘계학술대회 논문집
- /
- Pages.148-151
- /
- 2009
구조손상 검출을 위한 새로운 Pitch-catch 기법
A new pitch-catch method for structural damage detection
초록
In these days it is important to secure the life and stability of the structure such as aircrafts, automobiles and building. So the structural health monitoring is needed. In conventional lamb wave techniques, damage is identified by comparing the measured data (baseline signals) and the current data. But this method can lead to high false signal in the intact condition of the structure due to environmental conditions of the structure. As a solution to resolve it, the structural health monitoring method which doesn't use baseline signals is necessary. Damaged structure has unusual elastic wave. This paper proposed a PC(pitch-catch) method which doesn't use baseline signal. New baseline signals can get from detection signal. Damage signals based on new baseline signals. This paper made an image includes damage information by applying damage-signals to beamformming.
키워드